Embodiments of the disclosure describe systems and methods for controlling operation of a heating, ventilation, and air conditioning (HVAC) system. The HVAC system comprises a thermostat and a first HVAC unit coupled via a power line. The method comprises receiving, by a first control device of the first HVAC unit, from the thermostat over the power line, a HVAC signal associated with an operation to be performed by the HVAC system, wherein the power line is configured to communicate power signal and data signal. The method further comprises determining, by the first control device, whether the HVAC signal received over the power line is indicative of the power signal or the data signal. The method further comprises upon determining that the HVAC signal is indicative of the data signal, triggering, by the first control device, a control action associated with the HVAC system.
A system and method for a radar system is disclosed. The method includes determining, by a computing device, a first time of receipt, by a first receiver, of a reflected electromagnetic wave associated with the emitted electromagnetic wave. The method further includes determining, by the computing device, a second time of receipt, by a second receiver, of the reflected electromagnetic wave associated with the emitted electromagnetic wave. The method further includes determining, by the computing device, based on a difference between the first and second times of receipt, a direction of movement of the object relative to any one or a combination of the first and the second receivers.
G01S 13/58 - Velocity or trajectory determination systemsSense-of-movement determination systems
G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systemsAnalogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
3.
EXCESS ENERGY MANAGEMENT FOR SELF-POWERED AIR CONDITIONING SYSTEMS
An air conditioning system includes an first unit including a compressor; a controller; and one or more auxiliary DC power sources; the controller is configured to determine whether the one or more auxiliary DC power sources is producing excess power beyond a load of the first unit; when the one or more auxiliary DC power sources is not producing excess power beyond the load of the first unit, the controller supplies all power from the one or more auxiliary DC power sources to the first unit.
Embodiments of the disclosure describe systems and methods for controlling operation of a heating, ventilation, and air conditioning (HVAC) system by a thermostat. The thermostat comprises a set of wires. The method comprises determining an operation to be performed by the HVAC system based on at least one of a user input or one or more parameters associated with an indoor area. The method further comprises transmitting, to the HVAC system via the set of wires, an HVAC signal indicative of the operation to be performed. At least one wire of the set of wires is configured to communicate power signals and data signals associated with the HVAC signal. The method further comprises causing the HVAC system to perform the operation based on the transmitted HVAC signal. The set of wires comprises a common (C) line, a power line (R), and an outdoor activation (Y) line.
A sensor package includes a plurality of walls to form a hollow structure and a plurality of inner ledges extending inwardly from the plurality of walls. Further, an inner ledge is adapted to split a corresponding wall into a first part and a second part. The plurality of inner ledges divides the hollow structure in a top section defined by a top surface of the inner ledge and the first part of each of the plurality of walls surrounding the top surface and adapted to receive a die and a bottom section defined by a lower surface of the ledge and the second part each of the plurality of wall surrounding the lower surface, such that the bottom section is adapted to insulate a lower face of the die.
A radar system and a method for a radar system configured with a gating mechanism is disclosed. The method includes determining, by a computing device, one or more first pulse attributes related to a first set of reflected electromagnetic pulses during a first period of time. The method further includes operating, by the computing device, a modulator to append a modulated signal to a set of emitted electromagnetic pulses. The method further includes determining, by the computing device, one or more second pulse attributes related to a second set of reflected electromagnetic pulses during a second period of time. The method further includes determining, by the computing device, based on the one or more first and second pulse attributes, a change of position of the object within the FOV of the radar system during a period between the first period of time and the second period of time.
G01S 13/526 - Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters
A system for detection and correction of reverse flow in an ejector refrigeration circuit, includes ejectors, first sensors for measuring an ejector suction superheat of a refrigerant at a secondary low pressure input port of each of the ejectors, and a second sensor for measuring a superheat of the refrigerant upstream relative to the secondary low pressure input port. A controller receives the ejector suction superheats and the refrigerant superheat and determines whether a superheat difference between each of the ejector suction superheats and the refrigerant superheat falls below a threshold superheat difference. The controller identifies a first ejector as a reverse flow affected ejector based on the determined superheat difference. The controller compares opening percentages of the ejectors to determine a second ejector having the largest opening percentage and controls the first ejector and the second ejector to increase a refrigerant flow rate of the first ejector.
Disclosed is a temperature controller, a server, an air conditioning system and a temperature setting method. The temperature controller may be configured to operate in a carbon saving mode, and when operating in the carbon saving mode, the set temperature of the temperature controller is adjusted according to a green electricity index, and the green electricity index is the proportion of green electricity in a power grid to which the temperature controller is connected. When the proportion of the green electricity is high, i.e., the electric energy used is mainly from renewable energy sources, the set temperature is adjusted to produce more cold energy or heat energy for storage; and when the green electricity index decreases, the stored cold energy or heat energy can be used to meet the demand for cooling or heating, thereby reducing carbon emissions.
This application aims to provides a method for controlling an air conditioning system, an air conditioning system, a computer-readable storage medium, a mobile terminal device and a server so as to at least solve or alleviate part of the problems in the prior art. In the first aspect, this application provides a method for controlling an air conditioning system, the air conditioning system including a plurality of indoor units arranged in different regions. The control method includes: a step for acquiring occupancy information, acquiring occupancy information of the region; a step for acquiring electric energy information, acquiring electric energy information containing an electric energy characteristic; and a step for generating an energy storage instruction, generating an energy storage instruction for a specific region on the basis of the occupancy information when the electric energy information satisfies a predetermined energy storage condition.
A heat recovery wheel for a heat exchanger includes a wheel rim defining an outer perimeter of the heat recovery wheel, and a plurality of wheel passages located between the wheel rim and the wheel axis. The plurality of wheel passages are at least partially defined by one or more passage fins. At least a portion of a passage fin of the plurality of passage fins extends non-parallel to the wheel axis between a first wheel end and a second wheel end. The plurality of wheel passages are configured for flow of a first airflow and a second airflow therethrough for thermal energy exchange between the first airflow and the second airflow.
F28D 19/04 - Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
F24F 12/00 - Use of energy recovery systems in air conditioning, ventilation or screening
F28F 13/12 - Arrangements for modifying heat transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
11.
VIBRATION STABILIZER ASSEMBLY FOR A COMPRESSOR IN A TRANSPORT REFRIGERATION UNIT
A vibration stabilizer assembly for a compressor in a transport refrigeration unit (TRU) is disclosed. The assembly comprises a plurality of first buffers configured between a bottom plate associated with the compressor and a frame of the TRU, where each of the first buffers has a radial stiffness of less than 1000 pounds per inch.
A heat pump system for optimizing operational efficiency without charge imbalance, is disclosed. The heat pump system includes an indoor HVAC unit having an indoor coil and an outdoor HVAC unit in communication with the indoor HVAC unit. The outdoor HVAC unit includes a compressor in communication with a reversing valve, and an outdoor coil in communication with the indoor HVAC unit and the compressor. The outdoor coil includes at least one charge storage circuit. During a cooling mode, the liquid refrigerant flows into the indoor HVAC unit and the at least one charge storage circuit functions as a subcooling circuit. During a heating mode, the at least one charge storage circuit contains liquid refrigerant.
A fluid distributor for a heat exchanger is disclosed. The fluid distributor comprises a header having compartments. A plurality of MCHX tubes associated with a heat exchange section of the heat exchanger are fluidically connected to at least one of the compartments. The fluid distributor further comprises a distribution tube extending longitudinally along the compartments through the walls. The distribution tube comprises a plurality of cavities extending longitudinally along the length of the distribution tube and configured radially around a central axis of the distribution tube. Each cavity comprises ports opening in a compartment. Further, the fluid distributor comprises a supply tube fluidically connected to the distribution tube or to a supply tube compartment of header and configured to supply a fluid into the distribution tube.
A building chiller/heat pump system includes a chiller/heat pump system for supplying a conditioned fluid to change a temperature of air being delivered into a building. The chiller/heat pump system is provided with a control to achieve a desired setpoint of the air delivered into the building. The control is programmed to receive a prediction of expected remission levels in energy that will be delivered to power the chiller/heat pump system. The control is programmed to change the setpoint such that an energy level required to operate the chiller/heat pump system to achieve the setpoint will drop when the expected emissions level increases, and adjusts the setpoint in an opposed direction when the expected emissions drops. A method is also disclosed.
This disclosure is related to a refrigerated transport container and a refrigerated transport vehicle. The refrigerated transport container includes: a door body disposed on a rear wall of the refrigerated transport container; an air duct disposed on a top wall of the refrigerated transport container and extending in a direction close to or away from the door body; an air inlet disposed at one end of the air duct close to the door body and configured to introduce conditioned air into the refrigerated transport container; and an air baffle unit whose top portion is correspondingly disposed on one side of the air duct close to the air inlet and whose bottom portion can extend in a direction close to a bottom wall of the refrigerated transport container.
F25D 17/04 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
21 - HouseHold or kitchen utensils, containers and materials; glassware; porcelain; earthenware
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Thermostats; thermostats and climate control devices consisting of digital thermostats for air conditioning, heating, ventilation, drying and air quality control; electronic controls for air conditioning, heating ventilation and refrigeration systems and related technology devices; electrical controllers for environmental control systems; environmental monitoring system for environmental control systems comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; electrical controllers for environmental building monitor and control systems and for use with systems that monitor and control transportable and stationary refrigeration systems; electrical controllers for environmental building automation and energy management systems; computer software for receiving, processing, transmitting and displaying data on environmental control interactive displays used with environmental control systems and related air conditioning, refrigeration and heating ventilation systems and devices; user interfaces for electrotechnical and electronic environmental control systems and related air conditioning, refrigeration and heating ventilation systems and devices; interactive electronic display interfaces all for environmental control systems and related air conditioning, refrigeration and heating ventilation systems and devices; computer software for receiving, processing, transmitting and displaying data on environmental control interactive displays used with environmental building automation and energy management systems; user interfaces for electrotechnical and electronic environmental building automation and energy management systems; interactive electronic display interfaces all for environmental building automation and energy management systems; structural parts for the aforementioned goods; Downloadable computer software for collecting, analyzing, and reporting data from residential and commercial building data sources; downloadable mobile application software for enabling touchless building entry and elevator access and reporting building wellness data of livable spaces; Apparatus, instruments, and cables for electricity, electronic controllers used to reduce power consumption, apparatus, and instruments for accumulating and storing electricity, electric accumulators, anode batteries, high tension batteries, batteries, electric batteries for vehicles, batteries for lighting, battery jars, battery boxes, battery chargers, chargers for electric batteries, galvanic cells, galvanic batteries, grids for batteries, plates for batteries, and solar batteries; Circuit breakers, control panels, commutators, comparators, electric converters, current rectifiers, inverters, lightning conductors, lightning arresters, electricity limiters, relays, step-up transformers, switch boxes, time switches, electric voltage transformers, and voltage surge protectors; Temperature controlling apparatus, in particular temperature indicators and thermostats; electronic apparatus for the remote control of signals; electrical couplings; apparatus for regulating and controlling electricity; data processing equipment; remote control apparatus; solar panels for the production of electricity; Electrical/electronic regulation and control equipment for heating and solar systems; Remote controls for heating and solar systems; Computer software, in particular software for the planning and calculation of heating systems and software for the operation of boilers and solar systems; Solar systems for power generation; Computer software for use to control remotely air-conditioning apparatus for buildings; network computers installed with computer software for use to control remotely air-conditioning apparatus for buildings and their parts and fittings.
(2) Heating apparatus; heating boilers; hot water boilers; burners; Air treatment ionization equipment; air purifying apparatus and machines, humidifying, dehumidifying, refrigerating, ventilating and air conditioning units, namely, furnaces and heat pumps; transport refrigeration units such as for trucks, trailers and shipping containers; residential and commercial ventilating fans; residential and commercial air conditioning units; structural component parts thereof; cooking apparatus and installations; water distribution installations; drying apparatus; air dryers; refrigerators; refrigerating appliances and installations; humidifiers; heating apparatus; electric heating apparatus; heating installations; heating boilers; hot water boilers; burners; burners for liquid, gaseous or solid fuels and their metal, electric and pneumatic parts and accessories; kettles; heat exchangers (other than parts of machines); solar thermal collectors (heating); solar panels, panels for capturing solar energy; Boilers for oil, gas and solid fuels, in particular oil low-temperature boilers, gas condensing boilers, oil and gas wall-mounted boilers, gas low-temperature boilers, cast iron boilers; Heating circuit pumps; Oil and gas burners for boilers, especially oil and forced-air gas burners; Solar systems for heat generation, in particular solar collectors; Storage water heater; Electric water heater; Instantaneous water heaters; Heat pumps; Heat exchangers, other than parts of machines; Ventilation units (for air conditioning); Air cooling apparatus; Steam generators; Boilers, other than parts of non-electric prime movers and engines, namely, electric boilers, heating boilers and boilers for heating installations; air conditioners for industrial purposes; freezing apparatus for industrial purposes; heat pumps; air conditioners; air conditioners for household purposes; air conditioning apparatus. (1) Maintenance services and subscription maintenance services for hvac equipment, refrigeration equipment, temperature-controlled cargo containers, temperature-controlled cargo vehicles, temperature-controlled cargo storage units and facilities; HVAC contractor services; Installation, maintenance and repair services for heating, cooling, ventilating, air conditioning and refrigeration equipment; Installation, repair, maintenance and servicing of heat pumps, energy recovery systems, condensing units; Installation of burners and boilers; installation of apparatus for heating; installation of apparatus for air-conditioning; installation of steam generating apparatus; installation of cooking apparatus; installation of refrigerating apparatus; installation of drying installations; installation of ventilating apparatus for water pipes; installation of sanitary installations; installation of solar panels and collectors; maintenance of burners and boilers; maintenance of heating apparatus; installation of air-conditioning apparatus; maintenance of steam generating apparatus; maintenance of cooking apparatus; maintenance of refrigerating apparatus; maintenance of drying installations; maintenance of ventilating apparatus for water pipes; maintenance of sanitary installations; maintenance of solar panels and collectors; reparation services for others of burners and boilers; reparation services for others of heating apparatus; reparation services for others of air-conditioning apparatus; reparation services for others of steam generating apparatus; reparation services for others of cooking apparatus; reparation services for others of refrigerating apparatus; reparation services for others of drying installations; reparation services for others of ventilating apparatus for water pipes; reparation services for others of sanitary installations; reparation services for others of solar panels and collectors.
(2) Online platform as a service, namely, online non-downloadable software for collecting, analyzing and reporting data from residential and commercial building data sources, namely, Building Management Systems and Building Automation System (BMS/BAS) which are computer-based control systems installed in buildings that control and monitor a building's mechanical and electrical equipment and third-party sensors for mechanical and electric equipment in a building, and used for controlling and adjusting the mechanical and electrical equipment in a building for the purpose of optimizing performance and meeting certain industry standards for efficiency and wellness of persons and building spaces; online platform as a service, namely, online non-downloadable software for collecting, analyzing and reporting data from residential and commercial building data sources, namely, Building Management Systems and Building Automation System (BMS/BAS) which are computer-based control systems installed in buildings that control and monitor a building's mechanical and electrical equipment and third-party sensors for mechanical and electric equipment in a building, and used for controlling and adjusting the mechanical and electrical equipment in a building for the purpose of optimizing performance and meeting certain industry standards for efficiency and wellness of persons and building spaces; providing temporary use of non-downloadable computer software for collecting, analyzing and reporting data from residential and commercial building data sources, namely, Building Management Systems and Building Automation System (BMS/BAS) which are computer-based control systems installed in buildings that control and monitor a building's mechanical and electrical equipment and third-party sensors for mechanical and electric equipment in a building, and used for controlling and adjusting the mechanical and electrical equipment in a building for the purpose of optimizing performance and meeting certain industry standards for efficiency and wellness of persons and building spaces; providing temporary use of non-downloadable mobile application software for enabling touchless building entry and elevator access and reporting building wellness data of livable spaces; maintenance of computer software, namely, maintenance of mobile application software; remote monitoring of HVAC equipment, refrigeration equipment, temperature-controlled cargo containers, temperature-controlled cargo vehicles, temperature-controlled cargo storage units and facilities, and remote access management equipment to ensure proper functioning; technical support services in the nature of diagnosing problems with HVAC equipment, refrigeration equipment; providing a website featuring technology enabling users to remotely view, monitor, program, operate and control HVAC equipment, refrigeration equipment, temperature-controlled cargo containers, temperature-controlled cargo vehicles, temperature-controlled cargo storage units and facilities; computer services namely remote management of HVAC equipment, refrigeration equipment, temperature-controlled cargo containers, temperature-controlled cargo vehicles, temperature-controlled cargo storage units and facilities.
The present disclosure provides an accessory bracket and a display cabinet. The accessory bracket is to be used in conjunction with a display cabinet including a panel, the accessory bracket including: an outer frame; a curtain mounting portion; and a lighting unit mounting portion. The outer frame includes a fixing portion configured to fix the accessory bracket to the panel of the display cabinet. The curtain mounting portion is disposed on the outer frame and configured to mount a curtain capable of being coiled or unfolded. The lighting unit mounting portion is disposed on an end portion of the outer frame away from the panel. The outer frame, the curtain mounting portion, and the lighting unit mounting portion are integrally connected
F16M 13/02 - Other supports for positioning apparatus or articlesMeans for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
18.
SYSTEM AND METHOD FOR EVALUATING ACCURACY OF OPERATION OF PLURALITY OF SENSORS OF CLIMATE CONTROL UNIT IN PREMISES
A system and method for evaluating accuracy of operation of sensors of a climate control unit in a premises are disclosed. The method includes receiving, from a plurality of sensors, output signals indicative of a climate within the premises. The method further includes determining one or more climate parameters within the premises based on the received output signals. The method further includes receiving one or more historical climate parameters. The method further includes generating a virtual model configured to generate one or more virtual climate parameters. The method further includes determining, based on comparison of the climate parameters and the virtual climate parameters, a range of variation for the climate parameters. The method further includes determining an accuracy of operation of the plurality of sensors based on comparison of variation between the climate parameters and the virtual climate parameters with the determined range of variation for the climate parameters.
An air conditioning and refrigeration system for a container equipped with a transport refrigeration unit (TRU) is disclosed. The system comprises a variable speed fan configured with the TRU, and one or more first sensors positioned at predefined positions at a rear section of a conservation space associated with the container. The one or more first sensors are configured to monitor one or more first attributes associated with the rear section. The system further comprises a controller in communication with the one or more first sensors and the fan. The controller is configured to adjust speed of the fan and/or adjust cooling capacity of the TRU based on the monitored first attributes of the rear section, to maintain a predefined environment at the rear section or across the conservation space.
A system for controlling a plurality of ejectors in an ejector refrigeration circuit includes the plurality of ejectors and a controller. Each of the plurality of ejectors include a primary high pressure input port, a secondary low pressure input port, and an output port. The controller is coupled to each of the plurality of ejectors and adapted to generate a plurality of maps based on a set of predefined conditions. Each of the plurality of maps is associated with a corresponding temperature of a heat rejecting heat exchanger. The controller identifies a first map from the plurality of maps associated with a first temperature of the heat rejecting heat exchanger and an input signal from a first ejector indicative of a flow rate of a refrigerant fluid through the first ejector. Finally, the controller adjusts opening percentages of the plurality of ejectors based on the identified first map.
A data center cooling system for cooling at least one rack system of a data center includes a cooling circuit having a cooling fluid circulating therethrough. The cooling circuit has a closed loop configuration and includes a pump for moving the cooling fluid within the cooling circuit, a cooling distribution unit, and a heat recovery component mounted within the at least one rack system. The data center cooling system is thermally coupled to the at least one rack system such that heat is transferred from the at least one rack system directly to the cooling fluid at the heat recovery component.
A system includes an air conditioning system including a first unit including a compressor and a second unit; an energy storage device; a first transfer switch providing a power connection to the first unit; and a system energy manager configured to control the first transfer switch to supply power to both the second unit and the first unit from one of an AC power grid or the energy storage device.
H02J 3/14 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
A heat transfer system is disclosed that includes a heat transfer fluid circulation loop, and also a heat exchanger that includes an aluminum alloy exterior surface having thereon a top surface coat derived from a composition comprising a trivalent chromium salt and an alkali metal hexafluorozirconate.
C23C 22/34 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing fluorides or complex fluorides
C23C 22/36 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH < 6 containing fluorides or complex fluorides containing also phosphates
F28F 19/02 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
24.
LIQUID COOLING NEGATIVE PRESSURE DISTRIBUTION SYSTEM
A data center cooling system for cooling at least one rack system of a data center includes a cooling circuit having a cooling fluid circulating therethrough. The cooling circuit includes a cooling distribution unit and a heat recovery component associated with the at least one rack system. The heat recovery component is fluidly coupled to the cooling distribution unit. The cooling circuit has a negative pressure at the heat recovery component.
A railcar chassis for transporting a cargo container is disclosed. The railcar chassis includes a storage portion configured to receive the cargo container having a refrigeration unit. The railcar chassis also includes at least one power unit positioned proximate to the storage portion and configured to provide electrical power to the refrigeration unit.
B61D 27/00 - Heating, cooling, ventilating, or air-conditioning
B60R 16/033 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems characterised by the use of electrical cells or batteries
26.
METHOD AND SYSTEM FOR ESTIMATING OUTSIDE AIR TEMPERATURE
Embodiments of the disclosure describe a method and a system for estimating OAT for a first device. The method includes receiving, from the first device, a request to obtain an estimate of OAT at a first location of the first device. The method includes identifying a HVAC device(s) equipped with an OAT sensor disposed within a predefined threshold distance from the first device. The method includes obtaining one or more current temperature values associated with the HVAC device(s), wherein each of the one or more current temperature values, associated with a respective HVAC device(s) of the HVAC device(s), is measured at a respective second location of the corresponding HVAC device(s). The method includes estimating the OAT for the first device based on the one or more current temperature values measured at the respective second location of each of the HVAC device(s).
A control head monitor including a single pole double throw (SPDT) switch, is disclosed. The SPDT switch includes a first terminal, a second terminal, a third terminal, and a switching element. The load element is connected between an input line and the second terminal. The input line of a detection circuit is connected to the first terminal and an output line of the detection circuit is connected to the third terminal. The switching element is adapted to connect the first terminal and the third terminal during an OFF mode. The switching element is adapted to connect the second terminal and the third terminal, to generate at least one of an output signal and an absence of an output signal.
A system for enabling scheduled ventilation of an area of interest (AOI) is disclosed. The system comprises a controller that is configured to receive first historical data and first real-time data associated with one or more of temperature, humidity, air quality, and occupancy within the AOI. The controller is further configured to receive second historical data and second real-time data associated with one or more of temperature, humidity, air quality, and weather attributes outside of the AOI. The controller accordingly determines a scheduled time and duration for ventilation of the AOI based on the received first and second historical data and the received first and second real-time data.
The present invention provides an air conditioning system comprising: a compressor, a four-way valve, a first heat exchanger, a second heat exchanger, a third heat exchanger, a reservoir, a first solenoid valve, a second solenoid valve, and a check valve connected through pipelines, wherein the four-way valve has a first port for communicating with an exhaust port of the compressor, a second port for communicating with a first end of the first heat exchanger, a third port for communicating with a first end of the second heat exchanger, and a fourth port for communicating with a second end of the third heat exchanger; wherein a second end of the first heat exchanger is connected to a first end of the reservoir, and the second end of the first heat exchanger is connected to the first end of the reservoir.
F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
F24F 11/65 - Electronic processing for selecting an operating mode
F24F 13/30 - Arrangement or mounting of heat-exchangers
30.
VEHICLE THERMAL MANAGEMENT SYSTEM AND TRANSPORTATION REFRIGERATION VEHICLE
The present application provides a vehicle thermal management system and a transportation refrigeration vehicle. The vehicle thermal management system comprises: an air conditioning system, configured with a compressor, a first three-way valve, a first outdoor heat exchanger, an indoor heat exchanger, a regulating valve, an intermediate heat exchanger, and a first throttling element, a second throttling element, and a third throttling element connected through pipelines, and a battery cooling system, configured with a second outdoor heat exchanger, a battery cooling device, and a second three-way valve connected through pipelines.
The present utility model proposes a refrigeration display cabinet, comprising: a cabinet; a display rack fixed inside the cabinet; an air channel arranged at least partially surrounding the display rack; a partition mounted in the air channel to separate the air channel into an inner air channel and an outer air channel, wherein the partition is provided with an opening for connecting the inner air channel and the outer air channel; an evaporator arranged in the inner air channel, wherein the side of the evaporator is located at or near the opening; and a damper assembly fixed at the opening of the partition, wherein the damper assembly is capable of opening or closing the opening. The refrigeration display cabinet according to the present utility model can defrost the evaporator simultaneously from the bottom and side thereof during the defrosting mode, thus improving defrosting efficiency.
A detection system (10) for hazard detection is provided. The detection system (10) includes a control loop (16); an addressable base unit (18) connected to the control loop (16), the base unit (18) including a first near-field communication module (22) storing a unit address; and a mounting unit (20) removably coupled to the base unit (18), the mounting unit (20) including a second near-field communication module (24) operable to read the unit address from the first near-field communication module (22) and store the unit address so that the mounting unit (20) is thereby addressable via the control loop (16).
A refrigerant circuit for cooling a Variable Frequency Drive (VFD) unit of an air conditioning system includes a condenser for condensing refrigerant vapor. A heat sink includes a supply conduit assembly adapted to receive a first portion of a subcooled refrigerant fluid from the condenser and a discharge conduit assembly adapted to discharge a superheated refrigerant vapor to an accumulator. The subcooled refrigerant fluid transitions to the superheated refrigerant vapor upon absorbing heat from the VFD unit thermally coupled to the heat sink. The accumulator supplies the superheated refrigerant vapor to a compressor. An expansion valve expands a second portion of the condensed refrigerant fluid. An evaporator evaporates the expanded second portion of the refrigerant fluid. A compressor compresses the evaporated refrigerant vapor from the evaporator and the superheated refrigerant vapor received from the accumulator.
An air conditioning system includes a vapor compression cycle having a plurality of components including a compressor, an expansion device, and at least one heat exchanger. A heat transfer fluid is configured to circulate within the vapor compression cycle. An energy storage device is selectively operable to supply power to one of the plurality of components. The energy storage device is thermally coupled to the vapor compression cycle.
Embodiments of the disclosure describe systems and methods for detecting an occupancy of a room. The method comprises receiving, from a plurality of sensors located within the room, sensor readings indicative of corresponding occupancy parameters. The plurality of sensors are configured to measure the corresponding occupancy parameters. The method further comprises determining, based on the received sensor readings, one or more of an occupancy status of the room, and a confidence value associated with the determined occupancy status. The occupancy status is indicative of one of a positive status indicating occupancy of the room and a negative status indicating non-occupancy of the room. The method further comprises, in response to determining the occupancy status, triggering a control action associated with the room based on the determined occupancy status.
G06V 40/10 - Human or animal bodies, e.g. vehicle occupants or pedestriansBody parts, e.g. hands
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
36.
START-UP DEVICE, MOTOR SYSTEM AND METHOD FOR REDUCING DC MOTOR START-UP CURRENT
The present application relates to a motor control technology, and in particular to a start-up device for a DC motor, a motor system comprising the start-up device, a method for reducing DC motor start-up current and a computer-readable storage medium with a computer program stored thereon for implementing the above method. The start-up device for a DC motor according to one aspect of the present application includes: a switching element connected in series within a circuit comprising the DC motor and a DC power supply; and a control unit configured to cause the switching element to periodically switch between an ON state and an OFF state in a predetermined time interval to reduce the peak value of a start-up current flowing through the DC motor, and to cause the switching element to maintain the ON state after the predetermined time interval ends.
H02P 1/18 - Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual DC motor
H02P 1/02 - Arrangements for starting electric motors or dynamo-electric converters Details
H02P 7/291 - Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation with on-off control between two set points, e.g. controlling by hysteresis
37.
PORTABLE AC-DC POWER CONVERTER AND ON-BOARD POWER SUPPLY MANAGEMENT DEVICE
The present application relates to a portable AC-DC power converter for an on-board refrigeration unit and an on-board power supply management device suitable for use in conjunction with the aforementioned portable AC-DC power converter. A portable AC-DC power converter for on-board electrical equipment according to one aspect of the present application comprises: an AC-DC conversion unit; one or more AC power plugs connected to an input terminal of the AC-DC conversion unit; and one or more connectors connected to an output terminal of the AC-DC conversion unit, wherein the connector comprises a DC output interface and a conductor, where the conductor is configured to short circuit contacts arranged on the refrigeration unit on the vehicle side when the DC output interface is engaged with a DC input interface of an on-board connector to generate a trigger signal to disconnect the on-board electrical equipment from an on-board power source.
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
B60R 16/033 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems characterised by the use of electrical cells or batteries
38.
OUTDOOR UNIT FOR REFRIGERATION CABINET AND REFRIGERATION CABINET
The present invention relates to an outdoor unit for a refrigeration cabinet and a refrigeration cabinet. The outdoor unit comprises: a first unit comprising a compressor; a second unit comprising a condenser; wherein, the outdoor unit is configured to be installed in a first mode or a second mode; where in the first mode, the first unit and the second unit are installed adjacent to each other and connected with each other through fasteners, and the first unit and the second unit are connected through a first fluid pipeline passing through an adjacent surface between the first unit and the second unit; where in the second mode, the first unit and the second unit are respectively installed at a first position and a second position spaced apart, and the first unit and the second unit are connected through a second fluid pipeline extending between the first and second positions.
An air conditioning system includes a vapor compression cycle having a heat transfer fluid circulating between a compressor, an expansion device, and at least one heat exchanger. A flow of air is associated with the at least one heat exchanger of the vapor compression cycle. An energy storage device is selectively operable to supply power to the compressor and the flow of air is operable to cool the energy storage device.
A shell-and-tube heat exchanger assembly including a first tube sheet, a second tube sheet, and a plenum, is disclosed. The first tube sheet is adapted to be secured to a shell of the shell-and-tube heat exchanger assembly. The first tube sheet includes a plurality of first holes adapted to support a plurality of tubes extending through the shell. The second tube sheet is adapted to be fastened to a front surface of the first tube sheet and fastened to a rear surface of the plenum. The second tube sheet includes a plurality of second holes adapted to support the plurality of tubes extending through the plurality of first holes. The second tube sheet is made of a metal adapted to limit a corrosion response of the plurality of tubes when exposed to a chiller fluid.
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
F28D 7/10 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
41.
MOTOR DRIVE SYSTEM AND CONTROL METHOD FOR CHILLER UNIT
The present application relates to air conditioning technology and motor control technology, and in particular to a motor drive system for a chiller unit, a chiller unit comprising the motor drive system, a control method for a chiller unit, and a computer-readable storage medium on which is stored a computer program for implementing the method. A motor drive system for a chiller unit according to an aspect of the present application comprising: a variable frequency drive unit configured to drive a first motor; a power frequency drive unit configured to drive a second motor; and a control unit configured to adapt a load demand of the chiller unit by controlling output power of the variable frequency drive unit and the power frequency drive unit.
A transport refrigeration system includes a transport refrigeration unit, an energy storage device, a supply refrigerant tube, a return refrigerant tube and at least one electrical pathway. The transport refrigeration unit is adapted to cool a container. The energy storage device is adapted to provide electrical energy for operating the transport refrigeration unit. The supply refrigerant tube flows a refrigerant from the transport refrigeration unit to the energy storage device, and the return refrigerant tube flows the refrigerant from the energy storage device back to the transport refrigeration unit. The electrical pathway extends between the transport refrigeration unit and the energy storage device, and supplies at least electrical energy to the transport refrigeration unit.
A method of cooling an assembly including at least one heat-generating electronic device and at least one peripheral heat-generating device encapsulated within a container includes cooling the at least one peripheral heat-generating device with a first cooling medium, cooling the at least one heat-generating electronic device with a cold plate having an internal fluid circuit configured to receive a second cooling medium, and cooling the first cooling medium via the heat sink.
A rooftop air conditioning unit (RTU) is disclosed. The RTU comprises an absorber configured in a supply airstream, and a desorber configured in a regeneration airstream, wherein the desorber is fluidically connected to the absorber via a liquid desiccant system. The RTU further comprises a first heat exchanger configured upstream of the absorber in the supply airstream, a second heat exchanger configured upstream of the desorber in the regeneration airstream, and a third heat exchanger configured downstream of the absorber in the supply airstream, wherein the first heat exchanger and the third heat exchanger are fluidically connected to the second heat exchanger via a vapor compression system.
A cleaning system for cleaning at least one electrode of an electronic air cleaner includes a drive mechanism, at least one support operably coupled to the drive mechanism, and a continuous belt engaged with the at least one support. The continuous belt includes one or more cleaning teeth extending from a surface of the continuous belt and the one or more cleaning teeth are coplanar with the at least one electrode.
B08B 1/16 - Rigid blades, e.g. scrapersFlexible blades, e.g. wipers
B08B 1/30 - Cleaning by methods involving the use of tools by movement of cleaning members over a surface
F24F 8/192 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
Described herein is a fire suppressant device. The device comprises a container configured to store a liquid fire suppressant agent having a predetermined gravity, and a propellant having a predetermined charge density, a valve assembly configured with the container, where the valve assembly comprises a stem valve comprising one or more first orifices having a combined tangential flow cross-sectional surface area of a first predetermined value, and a spray nozzle fluidically configured with the valve assembly, where the nozzle comprises one or more second orifices having a combined tangential flow cross-sectional surface area of a second predetermined value.
A62C 13/64 - Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
A system including an air conditioning system; an energy storage device; a power converter; and a controller configured to control the power converter to supply power from at least one of an AC power grid and the energy storage device to one or more components of the air conditioning system.
Embodiments of the disclosure describe systems and methods for monitoring occupancy in a room. The method comprises causing, via a detection unit, transmission of radar signals within the room over a predefined period of time. The method further comprises receiving, via the detection unit, reflected signals corresponding to the transmitted radar signals, the reflected signals being indicative of information associated with the room. The method further comprises determining, based on the reflected signals, presence of one or more occupants within the room. The method further comprises, in response to determining presence of the one or more occupants within the room, determining one or more of: an activity associated with the one or more occupants within the room, preferences associated with usage of the room by the one or more occupants within the room, and a visualization map associated with the room.
A system for detecting low IAQ and enabling ventilation in a multi-zone environment is disclosed. The system comprises dampers configured in supply air channels associated with zones of the environment, and an IAQ sensor configured in a common return duct associated with the environment. When the IAQ values of combined return air are detected to vary, a controller successively operates one of the dampers in an open state while operating remaining zone dampers in a closed state, so that supply air flows into the zone having zone damper in the open state. The controller further successively monitors IAQ values of the return air received from each of the zones and accordingly detects a low IAQ condition in the zones when a difference is detected between the IAQ values of the return air from the respective zone, and the IAQ values of the combined return air received collectively from the zones.
F24F 11/32 - Responding to malfunctions or emergencies
F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
A bi-directional battery charging system for a first transport refrigeration unit (TRU) is disclosed. The bi-directional battery charging system comprises a bi-directional charger operatively connected to a controller and a battery associated with the first TRU, wherein the bi-directional charger is configured to be electrically connected to an external electrical component selected from the group of an electrical grid, a battery associated with second TRUs, and a battery associated with vehicles.
A liquid desiccant dedicated vapor compression system is disclosed. The system comprises an evaporator fluidically connected to a condenser through a compressor, an absorber fluidically connected to the evaporator to facilitate flow of air through the evaporator and the absorber, and a desorber fluidically connected to the absorber to facilitate the flow of the desiccant solution therebetween and further fluidically connected to the condenser to facilitate the flow of air through the condenser and the desorber. An inlet of a first refrigerant tube associated with the absorber, and an inlet of evaporator coils associated with the evaporator are fluidically connected to an outlet of the condenser via two different expansion valves. Further, an inlet of a second refrigerant tube associated with a desorber and an inlet of condenser coils associated with the condenser are fluidically connected to an outlet of the compressor.
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
F24F 1/0083 - Indoor units, e.g. fan coil units with dehumidification means
57.
DEVICE FOR AIR INLET OF REFRIGERATED DISPLAY CABINETS TO COLLECT PARTICULATES, OBJECTS, AND LIQUIDS
A device implemented at an air inlet of a refrigerated display cabinet is disclosed. The device comprises a housing comprising one or more inlets, and an air filter configured with a first wall of the housing. The housing is adapted to be fitted at an air inlet of the cabinet. The housing has a predefined dimension corresponding to the air inlet such that upon fitting the device at the air inlet, the air filter faces an airflow duct associated with a refrigeration system of the cabinet and the one or more inlets face a conservation space and/or an air curtain associated with the cabinet. The device restricts the entry of particulates, objects, and/or liquid within the duct, supply clean filtered air within the duct, and allows easier collection, removal, and cleaning of the particulates, objects, and liquid from the device.
A47F 3/04 - Showcases or show cabinets air-conditioned, refrigerated
F25D 17/04 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection
F25D 17/08 - Arrangements for circulating cooling fluidsArrangements for circulating gas, e.g. air, within refrigerated spaces for circulating gas, e.g. by natural convection by forced circulation using ducts
58.
HEATING VENTILATION AND AIR CONDITIONING SYSTEM FOR GENERATING FIRE ALERTS AND METHOD THEREOF
Embodiments of the disclosure describe a Heating Ventilation and Air Conditioning (HVAC) system and method for generating fire alerts for an indoor environment having a plurality of zones. The method comprises receiving, from an outside air temperature (OAT) sensor of the HVAC system, a current outside temperature value for an outdoor environment. Further, the method comprises receiving, from a zone sensor associated with the HVAC system, a current zone temperature value associated with a corresponding zone, from among the plurality of zones, in the indoor environment. Furthermore, the method comprises detecting, when the current zone temperature value is greater than the current outside temperature value, whether a rate of change of the current zone temperature value is greater than a predefined threshold value. Additionally, the method comprises generating a fire alert for the zone based on the detection step.
A duct system for an HVAC system of an air-sealed building and a method for conditioning the internal air of the air-sealed building are disclosed. The method comprises the steps of fluidically connecting an inlet duct comprising an inlet damper, between the central duct and an ambient, fluidically connecting an outlet duct comprising an outlet damper, between the central duct and the ambient, and configuring a baffle at a predefined location within one or more of the central duct, the inlet duct, and/or the outlet duct, moving the baffle to a first position, and the inlet damper and the outlet damper to an opened position to enable outflow of internal air from the one or more zones and/or the central duct into the ambient via the outlet duct, and further enable inflow of ambient air into the central duct and/or the one or more zones via the inlet duct.
F24F 3/147 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification with both heat and humidity transfer between supplied and exhausted air
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
F24F 11/46 - Improving electric energy efficiency or saving
A system to detect movement of doors associated with an area of interest (AOI) is disclosed. The system comprises a pressure sensor positioned at a predefined position within the AOI, wherein the pressure sensor is operable to monitor air pressure within the AOI, and a processing device in communication with the pressure sensor. The processing device comprises one or more processors coupled to a memory storing instructions executable by the processors, and configured to monitor, using the pressure sensor, the air pressure within the AOI in real-time, detect and measure a change in the air pressure within the AOI based on the monitored air pressure, and detect opening or closing of one or more doors associated with the AOI based on the measured change in the air pressure within the AOI.
G01L 23/00 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquidIndicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
G08B 13/20 - Actuation by change of fluid pressure
61.
SYSTEM AND METHOD FOR CALIBRATING INDOOR AIR QUALITY SENSORSOF A MULTI-ZONE ENVIRONMENT
A method for calibrating indoor air quality (IAQ) sensors associated with an area of interest (AOI) is disclosed. The method comprises the steps of creating a predetermined calibration environment for one or more IAQ sensors associated with the AOI by enabling a building management system (BMS) associated with the AOI to perform one or more of adjusting inflow of outside air into the AOI to a first predetermined maximum level, adjusting ventilation rate of the AOI to a second predetermined maximum level, and increasing a degree of air filtration in the AOI to a third predetermined maximum level; monitoring IAQ values detected by the one or more IAQ sensors at the AOI in the predetermined calibration environment, and calibrating the one or more IAQ sensors based on an average value of the monitored IAQ values being detected by each of the IAQ sensors.
F24F 11/64 - Electronic processing using pre-stored data
F24F 8/10 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
A compensator for an indoor unit of a reversible heat pump is disclosed. The compensator comprises a conduit of a predefined profile having a first end, and a second end. The first end of the conduit is adapted to be fluidically coupled to a thermal expansion device and a primary header of the indoor unit, such that the conduit remains above a connection point between the conduit, the thermal expansion device, and the primary header. The compensator is configured outside the indoor unit in one or more configurations. The compensator stores excess charge created between heating and cooling modes of the heat pump.
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
A multi-circuit heat pump is disclosed. The heat pump comprises an evaporator, a plurality of condensers fluidically connected in series, and a plurality of compressor units configured between the evaporator and the plurality of condensers such that one of the compressor units is fluidically configured between the evaporator and one of the condensers.
F25B 7/00 - Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
F25B 6/02 - Compression machines, plants or systems, with several condenser circuits arranged in parallel
A fan wheel and a method of manufacturing thereof are disclosed. The fan wheel comprises a first wheel portion comprising a first plurality of impeller blades, and a second wheel portion comprising a second plurality of impeller blades, wherein the first wheel portion is over-molded to the second wheel portion to attach the first wheel portion to the second wheel portion.
F04D 29/28 - Rotors specially adapted for elastic fluids for centrifugal or helico-centrifugal pumps
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
B29L 31/08 - Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
F04D 17/16 - Centrifugal pumps for displacing without appreciable compression
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
65.
SYSTEM AND METHOD FOR CONTROLLING OPERATION OF A TRANSPORT REFRIGERATION UNIT IN A VEHICLE
Embodiments of the disclosure describe systems and methods for controlling operation of a Transport Refrigeration Unit (TRU) of a vehicle, the vehicle comprising a container configured to store cargo. The method comprises receiving first input information from at least one sensor positioned inside the container. Further, the method comprises determining a current amount of cargo load in the container based on the received first input information from the at least one sensor. Furthermore, the method comprises controlling operation of the TRU by setting one or more temperature regulation parameters for the container based on the determined current amount of cargo load in the container. Further, the operation of the TRU is controlled by triggering a specific type of security mode, among a plurality of modes, in response to detecting a type of refrigerant leak in the vehicle.
A rooftop air conditioning unit (RTU) is disclosed. The RTU comprises an absorber configured in a supply airstream, a desorber configured in a regeneration airstream, wherein the desorber is fluidically connected to the absorber via a liquid desiccant system and an interchange heat exchanger. The RTU further comprises a first heat exchanger configured upstream of the absorber in the supply air stream, a second heat exchanger configured upstream of the desorber in the regeneration airstream, wherein the first heat exchanger is fluidically connected to the second heat exchanger via a vapor compression system, and one or more secondary heat exchanger configured between the vapor compression system and the liquid desiccant system, wherein the one or more secondary heat exchangers are operable to control temperature of a desiccant associated with the liquid desiccant system into the absorber and/or into the desorber.
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
The present invention provides a heat pump system and a wastewater tank. The heat pump system comprises: a main circuit connecting a compressor, a first heat exchanger, a throttling element, and a refrigerant pipeline of a second heat exchanger; a wastewater tank for receiving and storing domestic wastewater; a wastewater heat recovery circuit connecting a driving device, a first heat exchange unit, and a defrosting pipeline of the second heat exchanger, wherein the second heat exchanger is a three-medium fluid heat exchanger, the defrosting pipeline and the refrigerant pipeline are thermally coupled with each other, and the first heat exchange unit is thermally coupled with the wastewater tank; wherein, the heat pump system has a fast defrosting mode in which the wastewater heat recovery circuit transports residual heat from wastewater in the wastewater tank to the second heat exchanger to accelerate defrosting.
A cooling system for cooling an assembly including at least one heat-generating electronic device includes a heat spreader thermally coupled to the at least one heat-generating electronic device and a heat removal device having a surface that is thermally coupled to the at least one heat-generating electronic device via the heat spreader. The heat removal device includes an inlet area and at least one jet impingement feature fluidly coupled to the inlet area. The at least one jet impingement feature is positioned to direct a primary cooling fluid toward the surface that is thermally coupled to the at least one heat-generating electronic device.
A cooling system for cooling at least one heat-generating electronic device includes a heat removal device having a surface that is thermally couplable to the at least one heat-generating electronic device. The heat removal device includes an inlet area and at least one jet impingement feature fluidly coupled to the inlet area. The at least one jet impingement feature is positioned to direct a primary cooling fluid toward the surface that is thermally coupled to the at least one heat-generating electronic device.
A rooftop unit (RTU) having a power exhaust component is disclosed. The RTU comprises a sliding mechanism configured to support the power exhaust component and enable movement of the power exhaust component between a stowed position, and an unpacked position. Further, an RTU having furnace assembly is disclosed. The RTU comprises a sliding mechanism configured to support the furnace assembly and enable movement of the furnace assembly between a stowed position, and an unpacked position. Furthermore, an air-directing baffle for an electric heater associated with an RTU is disclosed. The baffle is adapted to be removably configured between the electric heater and fan(s) associated with the RTU. The baffle directs the flow of air towards a limit switch and/or heating elements associated with the electric heater while restricting the recirculation of the air towards the fans or within the RTU.
Embodiments of the disclosure describe systems and methods for managing the allotment of rooms based on indoor air quality (IAQ). The method comprises detecting, based on an IAQ sensor located within a room of a plurality of rooms, a current IAQ of the room. The method further comprises determining whether the current IAQ of the room exceeds a predetermined threshold value. The method further comprises, in response to the determination that the current IAQ exceeds the predetermined threshold value, performing at least one of triggering a control action for the room, and generating and sending a room status change signal to an allotment module configured for allocating the room.
A system for determining a humidity level for an area of interest (AOI) is disclosed. The system comprises a first sensor operable to monitor ambient air temperature outside the AOI, a second sensor operable to monitor dew point temperature within the AOI, and a processing device in communication with the first sensor and the second sensor. The processing device comprises one or more processors coupled to a memory storing instructions executable by the one or more processors, wherein the processing device is configured to receive, from the first sensor, the ambient air temperature being monitored outside the AOI, receive, from the second sensor, the dew point temperature being monitored within the AOI, and determine a humidity level to be maintained within the AOI based on the received ambient air temperature and the received dew point temperature.
An ejector comprises: a housing having a first chamber and a second chamber, the first chamber having a first inlet for introducing high-pressure fluid and a second inlet for introducing low-pressure fluid, and the second chamber is sequentially provided with a reducing section, a mixing section, and an expanding section along the direction of fluid movement; a nozzle installed in the first chamber of the housing and is only capable of moving along the axis direction of the first chamber of the housing; a magnetic rotating mechanism, comprising an outer ring and an inner ring, the inner ring is rotatably connected to the second end of the nozzle.
Embodiments of the disclosure describe systems and methods for evaluating an operational aspect of a life safety detection device. The method comprises transmitting light from at least one light source into a detection chamber positioned within an interior of a housing of the device. Further, the method comprises receiving, over a predefined time period, scattered light within the detection chamber, wherein the scattered light is indicative of a presence of airborne particulate matter. Furthermore, the method comprises determining, by a processor coupled to the device, a variation pattern of the airborne particulate matter during the predefined time period to analyze, by the processor, the variation pattern of the airborne particulate matter over the predefined time period with respect to another variation pattern during the predefined time duration to evaluate operational aspects of the device.
An electromagnetic shielding member for a gas detector, is disclosed. The electromagnetic shielding member includes a hollow body adapted to enclose a sensor. The hollow body includes a connecting portion and at least one airflow channel. The connecting portion is adapted to electrically connect the hollow body to an enclosure of the gas detector. The at least one airflow channel is defined in the hollow body. The at least one airflow channel is in fluid communication with the sensor, such that the at least one airflow channel is adapted to block an electromagnetic signal based on a set of geometrical parameters associated with the at least one airflow channel. Moreover, the at least one airflow channel is oriented to prevent at least one of ambient particulate matter and water particles from directly contacting the sensor.
A system and method for managing climate in a premises is disclosed. The method includes receiving from a detection means, during a plurality of time periods, signals indicative of one or more persons within the premises; extracting from the received signals, identity of the one or more persons within the premises; receiving, from the one or more persons, respective preferred parameters for climate in the premises; predicting, based on the received signals during the plurality of time periods, presence of one or more persons in a subsequent time period, the corresponding identities of the one or more persons, and the respective preferred parameters for climate in the premises; and operating a climate control unit of the premises, such that, for the subsequent time period, the climate in the premises substantially corresponds with the respective preferred parameters for climate in the premises, of the one or more persons predicted to be in the premises.
A system and method for management of an emergency event in a premises is disclosed. The method includes receiving, by a computing device, from any one or more sensors, signals indicative of an emergency event; receiving, by the computing device, from the one or more sensors, a location of the emergency event within the premises; receiving, by the computing device, from any one or more electronic devices, inputs relating to parameters of the emergency event; receiving, by the computing device, from the one or more electronic devices, a corresponding location of the associated one or more persons; and determining, by the computing device, for each person, an evacuation route from a corresponding current location of each person to a designated evacuation location. The evacuation route is further based on location and parameters of the emergency event, such that potential danger to each person along the corresponding evacuation route is minimized.
A draw-through fan assembly and heat exchanger system configuration is disclosed, comprising a fan deck adapted to mount the fan assembly, an axial fan with a rotating shroud, a heat exchanger section located upstream of the fan and the fan assembly, and a J-shaped inlet bell mouth configured upstream of the fan deck that is located within a space between heat exchangers. Further, a motor associated with the fan assembly and one or more motor struts are positioned upstream of the fan. The fan is mounted on the bottom of the struts, such that once the fan-mounted assembly is configured at the outlet of the heat exchangers, the bell mouth and fan remain below the fan deck and are disposed in a space between the heat exchangers.
A transport refrigeration unit (TRU) is disclosed. The TRU comprises a variable speed compressor, and an electric heater configured upstream and/or downstream of evaporator coils associated with an evaporator of the TRU, wherein an outlet of the compressor is fluidically connected to the evaporator coils and a condenser of the TRU.
A transport refrigeration unit (TRU) is disclosed. The TRU comprises a sensor positioned at an outlet of an evaporator associated with the TRU. The sensor is operable to sense temperature of a refrigerant exiting evaporator coils of the evaporator, wherein the TRU is configured to terminate defrosting of the evaporator when the sensed temperature exceeds a first predefined temperature indicative of a phase change or melting of ice formed on the evaporator coils.
A hybrid refrigeration system comprises: a liquid nitrogen based first refrigeration device for regulating the temperature of a cargo box of a transportation refrigeration vehicle; a mechanical based second refrigeration device for regulating the temperature of the cargo box of the transportation refrigeration vehicle; and a controller connected to the first refrigeration device and the second refrigeration device; wherein, the controller is configured to determine whether the difference between the temperature of the cargo box and the set temperature is greater than or equal to a first threshold when receiving a refrigeration demand for the cargo box; if so, start the first refrigeration device alone or start both the first refrigeration device and the second refrigeration device simultaneously; and if not, start the second refrigeration device alone.
A system to control operation of an HVAC unit for conditioning indoor air quality in a multi-zone area is disclosed, The system comprises a controller adapted to be operatively connected to an air handling unit (AHU) associated with the HVAC unit. The controller is configured to receive, from one or more sensors installed at a plurality of zones of an area of interest (AOI), a set of data packets pertaining to indoor air quality (IAQ) at each of the zones in real-time. Further, when the IAQ of any of the plurality of zones is detected to be above a first predefined level, the controller enables the AHU and the HVAC unit to circulate air from at least one of the remaining zones having the IAQ below the first predefined level to the zones having the IAQ above the first predefined level.
A system and method for calibrating flame current in a furnace is disclosed. The method includes initiating combustion within a combustion chamber by allowing flow of the fuel mixture to the combustion chamber; receiving, from a sensor, signals indicative of a flow rate of the air to the combustion chamber; receiving, from a flame rod sensor, signals indicative of a flame current of the combustion chamber; varying a flow rate of the air to the combustion chamber; receiving, from the flame rod sensor, responsive to varying flow rate of the air to the combustion chamber, signals indicative of a change in the flame current of the combustion chamber; and determining, based on varying flow rate of the air to the combustion chamber, and the change in flame current of the combustion chamber, a correlation between the flow rate of the air, and the flame current of the combustion chamber.
Disclosed is an HVAC system for enabling and controlling management of HVAC features. The system includes at least one HVAC equipment, and at least one remote control device communicatively connected with the at least one HVAC equipment. The at least one remote control device includes a processor(s) configured to receive a request including an indication to enable and configure operational characteristic(s) of the at least one HVAC equipment, and at least one of user identification information or HVAC equipment identification information. The processor(s) is further configured to determine a validity of the received request and to enable and configure the operational characteristic(s) upon determining that the received request is valid.
Provided is an EMC filter for rejecting external EMC noises and filtering self-generated emission radiations. The EMC filter includes a first connection port configured to receive one or more input signals from a plurality of sensors and an input power signal. The EMC filter further includes a first filter stage, a second filter stage, and a third filter stage. The first filter stage is configured to filter the received input power signal and the second filter stage is configured to filter one or more ground output signals of the EMC filter. The third filter stage is configured to filter the received one or more input signals to remove EMC noises from the received one or more input signals. The EMC filter further includes a second connection port configured to output the filtered one or more input signals and the filtered input power signal to a fleet management apparatus.
A refrigerated display cabinet is disclosed. The cabinet comprises a case comprising one or more shelves disposed between side walls of the case to form a conservation space to support and store one or more products therewithin, a duct extending from a bottom front side of the cabinet to a top front side of the cabinet via a rear side of the cabinet, and at least one heat exchanger comprising one or more headers, and a plurality of flat microchannel tubes, wherein the at least one heat exchanger is disposed within the duct on the rear side of the cabinet with the plurality of flat microchannel tubes inclined at a first predefined angle with respect to a horizontal plane such that the headers on both sides of the flat microchannels tubes are at different elevations.
Described herein is a refrigerated display cabinet. The cabinet comprises a case comprising shelves disposed between side walls of the case to form a conservation space to store products therewithin, a duct extending from a bottom front side of the cabinet to a top front side of the cabinet via a rear side of the cabinet, and at least one heat exchanger, each comprising one or more headers and a plurality of heat exchange tubes extending between the headers. The heat exchange tubes comprise at least one bend formed along a length of the heat exchange tubes to define at least two sections of the heat exchange tubes. The heat exchanger is disposed within the duct of the cabinet such that the headers remain at one lateral end of the rear side and at least one of the bends of the heat exchange tubes remains opposite to the headers.
A device for analyzing and discriminating faults in an HVAC system. The device comprises acoustic sensor(s) to monitor acoustic parameters associated with component(s) of the HVAC system, and electrical sensor(s) to monitor one or more electrical parameters associated with the component(s) of the HVAC system. The device comprises a processing unit in communication with the acoustic sensor(s) and the electrical sensor(s). The processing unit is configured to receive, from the acoustic sensor (s), the acoustic parameters being monitored within the HVAC system, receive, from the electrical sensor(s), the electrical parameters associated with the component(s) of the HVAC system, and analyze one or more of the received acoustic parameters, and the electrical parameters to detect and discriminate one or more faults in the component(s) of the HVAC system.
A method for setting cooling parameters for a refrigerated transport vehicle includes receiving, from the transport vehicle, first information including energy consumption and performance parameters associated with the transport vehicle, and second information including vehicle type information and transit information associated with the transport vehicle. The method further includes retrieving historical data associated with peer transport vehicles similar to the transport vehicle based on the second information and identifying a peer transport vehicle for which energy and fuel consumption is minimum based on the second information and the retrieved historical data. Upon determining that the energy consumption and the performance parameters of the transport vehicle are greater than the energy consumption and the performance parameters of the identified peer transport vehicle, the method further includes controlling setting of the cooling parameters of the transport vehicle based on the cooling parameters of the identified peer transport vehicle.
Embodiments of the disclosure describe systems and methods for managing temperature control in an indoor environment, having a plurality of zones, by a Heating Ventilation, and Air Conditioning (HVAC) system. The method comprises, for each zone, detecting a current temperature value of a corresponding zone, comparing the current temperature value with one of a first threshold value and a second threshold value for the corresponding zone, and determining, based on the comparison, whether the current temperature value reaches one of the first threshold value or the second threshold value, and in response to the determination, triggering one of a first control action or a second control action for the corresponding zone. The second threshold value is one of greater than or less than the first threshold value and a set point range for the corresponding zone when one of heating or cooling is being performed by the HVAC system.
A system to control indoor air quality (IAQ) at zones of an area of interest (AOI) is disclosed. The system comprises one or more HVAC devices configured with one or more zones of the AOI, one or more electronic locks configured with a door of the one or more zones, and one or more IAQ sensing devices provided at the one or more zones, wherein the one or more sensing devices are configured to communicatively couple with the one or more electronic locks, and the one or more HVAC devices, and wherein each of the electronic locks is configured to track position and motion of the sensing device that is assigned to the zone where the corresponding electronic lock is installed; and generate an alert signal when the sensing device assigned to any of the one or more zones is detected to be out of the corresponding zone.
F24F 11/49 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
F24F 11/52 - Indication arrangements, e.g. displays
F24F 11/57 - Remote control using telephone networks
F24F 11/65 - Electronic processing for selecting an operating mode
F24F 11/80 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air
Disclosed is a method for detecting motor parameters, comprising: injecting a first direct current signal; receiving a first d-q axis feedback current corresponding to the first direct current signal and a first d-q axis voltage output by a current regulation module; injecting a second direct current signal different from the first direct current signal; receiving a second d-q axis feedback current corresponding to the second direct current signal and a second d-q axis voltage output by the current regulation module; and determining motor parameters based on the first d-q axis feedback current, the first d-q axis voltage, the second d-q axis feedback current and the second d-q axis voltage. Also disclosed is an apparatus for detecting motor parameters, a computer program product and an air conditioner compressor system.
A transport refrigeration system includes a refrigeration unit including a controller configured to control the refrigeration unit; an electric power device configured to provide power to a refrigeration component of the refrigeration unit; an export power module (EPM) including: an EPM controller in communication with the controller; a power control device configured to receive power from the electric power device; an auxiliary device coupled to the power control device; wherein the controller is configured to communicate with the EPM controller to control power supplied from the electric power device to the auxiliary device.
A self-testing smoke detector is disclosed that includes a base and an optical cover positioned on the base and adapted to form an optical cavity with the base, allowing the smoke to enter therein. The self-testing smoke detector also includes a light source positioned in the base and adapted to illuminate the optical cavity. In addition, the self-testing smoke detector includes an electrochromic film disposed in a path of light produced by the light source and adapted to vary an intensity of illumination. The self-testing smoke detector also includes a photodiode unit positioned in the base and adapted to detect a change in the intensity of illumination in the optical cavity, wherein the change in the intensity of illumination is indicative of an active status of the light source and the photodiode unit.
Embodiments of the disclosure describe a robust optical monitoring device and an operating method thereof. The optical monitoring device includes a housing comprising a first compartment and a second compartment. The first compartment includes a camera circuit board and a wireless connection circuit board, wherein the second compartment comprises a supply circuit board. Further, the housing includes an isolation cell to isolate the first compartment and the second compartment, a camera configured to be disposed in the first compartment of the housing to receive images associated with a sight glass, and an illumination board disposed within the first compartment of the housing positioned to project light for operation of the camera.
A heat exchanger is disclosed. The heat exchanger includes a hollow tube extending from a tube inlet to a tube outlet. The hollow tube includes a wall that includes a core of a first aluminum alloy, and a cladding over the core of a second aluminum alloy. The second aluminum alloy is less noble than the first aluminum alloy and includes an alloying element selected from tin, indium, or gallium, or combinations thereof. A first fluid flow path is disposed along an inner surface of the wall from the tube inlet to the tube outlet, and a second fluid flow path is disposed across an outer surface of the wall.
F28F 19/00 - Preventing the formation of deposits or corrosion, e.g. by using filters
B23K 20/04 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
B32B 15/01 - Layered products essentially comprising metal all layers being exclusively metallic
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
C22C 21/10 - Alloys based on aluminium with zinc as the next major constituent
F28F 1/30 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means being attachable to the element
F28F 19/06 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of metal
F28F 21/08 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
98.
SYSTEM AND METHOD FOR OPERATING PLURALITY OF EVAPORATOR UNITS
A system and method for operating a plurality of evaporator units is disclosed. The method includes receiving, by a controller communicably coupled to each evaporator unit, a current state of operation of the respective evaporator unit. A state of operation of each evaporator unit includes first and second modes of operation. The method includes receiving, by the controller, a current speed of a fan of the respective evaporator unit. Responsive to the state of operation of the plurality of evaporator units, the method further includes operating, by the controller, each of the plurality of evaporator units, to change the speed of the respective fans from a first speed to a speed different from the first speed. Operation of the fans of the plurality of evaporator units at the speed different from the first speed enables the plurality of evaporator units to operate within a desirable range of cooling efficiency.
A heating, ventilation, and air conditioning (HVAC) system includes a housing, a plurality of compressors, a condenser, a reheater, and an evaporator arranged in fluid communication. The condenser and the reheater are arranged in parallel and the plurality of compressors are arranged in parallel. A fluid management system is operable to actively manage a flow of a fluid within the HVAC system provided to the reheater.
F24F 11/84 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
F24F 3/153 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
F24F 11/86 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
Embodiments of the disclosure describe a replaceable module for a gas detector. The replaceable module may include a sensor housing and a cover. The sensor housing is adapted to accommodate a sensor and a first sensor circuit of the gas detector. The sensor is detachably connected to the first sensor circuit. The cover is detachably connected to the sensor housing. The cover may include at least one resilient engaging member extending from the cover and defines at least one protrusion adapted to engage with a lower enclosure of the gas detector to restrict a movement of the cover relative to the lower enclosure.
