A cooling module associable with a heat-generating electronic device of a server includes a casing having a hollow interior and at least one heat removal device arranged within the hollow interior. A fluid flow path of a primary cooling fluid extends through the casing and the at least one heat removal device defines a portion of the fluid flow path. The primary cooling fluid is configured to absorb heat from the heat-generating electronic device within the cooling module.
A method for identifying a state of a stream of refrigerant includes capturing a plurality of sample images of a sensor for sensing the stream of the refrigerant, processing each of the plurality of sample images to identify a first color indicative of a dry refrigerant and a second color indicative of a wet refrigerant. The method also includes calculating an aggregated volume of each of the first color and the second color, wherein the aggregated volumes of the first color and the second color indicate a dry refrigerant or the wet refrigerant respectively in the stream. Further, the method includes comparing an aggregated volume ratio of the first color and the second color with a first threshold ratio and a second threshold ratio and determining the state as one of a dry state, a transient state, and a wet state based on the comparison.
G01N 25/64 - Investigating or analysing materials by the use of thermal means by investigating moisture content by psychrometric means, e.g. wet-and-dry-bulb thermometers using electric temperature-responsive elements
F24F 11/30 - Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
F24F 11/52 - Indication arrangements, e.g. displays
G01N 31/22 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using chemical indicators
A cooling device associable with a heat-generating electronic device of a server includes a housing having a fluid inlet and a fluid outlet and a divider separating the interior of the housing into a first fluid compartment and a second fluid compartment. Both the first fluid compartment and the second fluid compartment are fluidly connected to the fluid inlet. A heat transfer potential of the second fluid compartment is less than the heat transfer potential of the first fluid compartment. At least one opening is formed in the divider at a location downstream from the fluid inlet and upstream from the fluid outlet. The first fluid compartment is fluidly coupled to the second fluid compartment at the at least one opening.
A heat exchanger includes a plurality of plate fins. At least one plate fin has a plurality of holes arranged in one or more rows and a contoured region formed adjacent one of the plurality of holes having a sinusoidal corrugation. The contoured region includes a plurality of elongate adjustable lance elements. The plurality of elongate adjustable lance elements are lowered relative to a central plane arranged at a midpoint of an amplitude of the sinusoidal corrugation.
A method of producing a porous scaffold for solid desiccant is provided. The method includes dissolving a scaffold precursor and dispersing desiccant particles in a solvent to create a mixture, placing a substrate in the solvent with the mixture, encouraging the scaffold precursor and the desiccant particles to collect on surfaces of the substrate and to grow crystals therefrom, removing the solvent while leaving the scaffold precursor as a porous scaffold on which the desiccant particles are supported and at least partially exposed and consolidating the porous scaffold with the desiccant particles supported thereon and at least partially exposed.
B01J 20/22 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising organic material
B01J 20/10 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
An air conditioning system includes an inverter and a power factor correction circuit in signal communication with the inverter. The inverter converts a DC voltage delivered from a DC voltage supply into an AC voltage. The power factor correction circuit delivers an AC line voltage across an AC voltage line based on the AC voltage and outputs an AC line voltage signal that is indicative of the AC line voltage. An inverter controller receives a feedback of the AC voltage from the inverter and receives an AC line signal from the PFC circuit. The inverter control selectively operates in a first mode to control the inverter based on the AC line voltage signal and a second mode to control the inverter based on the feedback of the inverter output.
A home energy management system (HEMS) includes a power supply configured to provide alternating current (AC) power, at least one load electrically connected to the power supply, and a modular multi-level (MMC) converter configured to receive power from the power supply and to supply a regulated converter output to the at least one load. The MMC includes one or more converter branches and a filter. The converter branch is in signal communication with the power supply and includes a plurality of bridge cells. Each bridge cell includes a plurality of power switches and a battery. The filter is electrically connected between the at least one load and the at least one converter branch. The filter is configured to reduce harmonic distortion and high-frequency noise in the converter output.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
9.
EFFICIENT HIGH-DENSITY ENERGY STORAGE FOR EQUIPMENT
An energy storage device (ESD) system includes a battery module that includes individual cases. Each of the individual cases includes a battery cell. The ESD system further includes an ESD pump and a battery management system (BMS). The ESD pump is operable to flow immersion fluid into, through, and out of the battery module and the individual cases. The BMS is operable to make a determination that a status of the battery cell is out-of-range, and, responsive to the determination that the status of the battery cell is out-of-range, control operations of the ESD pump.
H01M 10/6568 - Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 50/213 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
According to embodiments, an energy storage device (ESD) holder includes a main body, one or more ESD openings in the main body, and one or more vacancy regions in the main body. Each of the one or more vacancy regions is operable to hold a fluid. A first ESD opening of the one or more ESD openings is operable to prevent the fluid from contacting an ESD within the first ESD opening.
H01M 10/633 - Control systems characterised by algorithms, flow charts, software details or the like
H01G 11/18 - Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
An electronics enclosure system includes an enclosure, one or more electronics racks positioned in the enclosure and a cooling system to cool the one or more electronics racks. The cooling system includes a plurality of spray nozzles positioned inside the enclosure and configured to spray a cooling fluid onto the electronics rack to cool the electronics rack. The plurality of spray nozzles are operably connected to a vapor compression circuit configured to cool the cooling fluid. A method of cooling an electronics rack includes positioning one or more electronics racks in an enclosure, operating a cooling system to spray a cooling fluid onto the electronics rack from a plurality of spray nozzles positioned inside the enclosure to cool the electronics rack, and cooling the cooling fluid via a vapor compression circuit operably connected to the plurality of spray nozzles.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
12.
SYSTEM AND METHOD FOR CONTROLLING A DUAL-FUEL HEATING SYSTEM IN A VIRTUAL POWER PLANT DURING PERIODS OF PEAK DEMAND TO REDUCE CONSUMPTION ON A POWER GRID
A heating system having a first heating appliance powered by electricity provided via: a transmission line from an electric power grid that provides electricity to a plurality of buildings including the building; a second heating appliance powered via a fuel; and a controller operationally coupled to the first heating appliance and the second heating appliance, and configured to receive control signals over a telecommunications network, wherein the control signals are associated with reducing consumption of electricity via the electric power grid, wherein, responsive to receiving the control signals, the controller is configured to switch between powering the first heating appliance via the electric power grid and the second heating appliance with the fuel.
A transportation refrigeration system, having: a cargo box extending from a front end to an aft end; a transportation refrigeration unit (TRU) at the front end of the cargo box; wherein the TRU includes: a controller; a flow motivator; an evaporator coil; a first temperature sensor mounted near the evaporator coil; and a second temperature sensor mounted within the cargo box; wherein the controller is configured to cycle the flow motivator between an on-phase when a cargo box temperature is at or above an upper setpoint and an off-phase when the cargo box temperature is at a lower setpoint; and wherein following a defrost event that defrosts the evaporator coil, the controller is configured to monitor the second temperature sensor for determining when to transition between the on-phase and the off-phase, until a stable condition of the first sensor is determined.
A cooling system includes a heat removal device operable to cool a stacked microchip assembly. The heat removal device includes a structure having a first end, a second end, at least one sidewall extending between and connecting the first end and the second end, and a hollow interior. The stacked microchip assembly is positionable within the hollow interior. An inlet cavity and an outlet cavity are arranged within the hollow interior and are fluidly connectable to at least one passageway formed in the stacked microchip assembly. An inlet opening is formed in the structure and is fluidly connected with the inlet cavity. An outlet opening formed in the structure is fluidly connected with the outlet cavity. A first cooling fluid is movable from the inlet cavity to the outlet cavity through the at least one passageway formed in the stacked microchip assembly.
An air conditioning system, having: a heat pump having a heat pump coil, a fan coil unit (an FCU) having an FCU coil, a first conduit and a second conduit connecting the heat pump to the FCU coil, wherein the first conduit, the second conduit, the heat pump coil and the FCU coil define a loop; a working fluid in the loop; and a thermal energy storage unit (a TES unit) coupled to the first conduit; a thermal expansion valve (a TXV) including a TXV body coupled to the second conduit, and a bulb coupled to the first conduit, between the TES unit and the heat pump.
This application provides a bearing device, and a motor and a compressor including the bearing device. The bearing device includes a rotating shaft, a first bearing and a second bearing disposed around the rotating shaft and parallel to each other, a thrust disc sleeved on and fixed to the rotating shaft, and a sensor disc disposed around the rotating shaft and parallel to the thrust disc. A first displacement sensor including a first sensor probe and a second displacement sensor including a second sensor probe are symmetrically disposed on the sensor disc. By connecting the first displacement sensor, the second displacement sensor, and an excitation source module in parallel or in series, detection results of the first sensor probe and the second sensor probe are combined to obtain a degree of deviation of the rotating shaft.
This application relates to a magnetic suspension bearing control system, a control method and refrigeration equipment. The magnetic suspension bearing control system includes: a magnetic suspension bearing control module configured to control a magnetic suspension bearing; a battery management module electrically connected to the magnetic suspension bearing control module; and a master control module connected to the magnetic suspension bearing control module and the battery management module, and configured to control the battery management module to store electric energy when a voltage of the magnetic suspension bearing control module is excessive, and supply power to the magnetic suspension bearing control module when the magnetic suspension bearing control module is underpowered.
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H02J 9/00 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02K 7/09 - Structural association with bearings with magnetic bearings
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
18.
SYSTEM AND METHOD THAT IDENTIFIES A HEALTH STATE OF AN ENERGY STORAGE SYSTEM OF A SYSTEM THAT CONDITIONS AIR
A system for conditioning air, the system having: a controller; an energy storage system (ESS) that is a battery, wherein the ESS is operable to power the system; and an AC power bus for connecting the system to an AC power grid to selectively charge the ESS; wherein the controller is configured to: request, from the ESS, health state data of the ESS; determine a health state of the ESS from the health state data; and request a replacement ESS responsive to the health state of the ESS.
SYSTEM AND METHOD FOR CONTROLLING A CHARGE OR DISCHARGE RATE OF A BATTERY PACK, COUPLED WITH GRID POWER, UTILIZED FOR POWER OPERATION OF AIR CONDITIONING SYSTEMS
An air conditioning system having: a controller; an energy storage device including a battery pack, wherein the energy storage device is operable to power the air conditioning system; and an AC power bus for connection the air conditioning system to an AC power grid to selectively charge the battery pack; wherein the controller is configured to: receive a request to charge or discharge the battery pack within a time window; determine whether the battery pack will remain within a predetermined operating temperature range while being charged or discharged within the time window, and responsive to a determination, either charging or discharging the battery pack, pursuant to the request, or denying the request.
Disclosed herein is an air handling unit for use with an air conditioning system. The air handling unit comprises a housing duct through which air is moved from an inlet to an outlet, a blower disposed inside the housing duct, configured for moving air within the housing duct, and a heater module coaxially disposed inside the housing duct along a direction of flow of air, wherein the heater module comprises a frame formed by a mesh of rods, configured to be removably disposed inside the housing duct, and a heating element, removably attached to and supported on the frame such that the heating element remains coaxially disposed inside the housing duct. The shape of the heating element is selected based on an airflow pattern of air flowing through the heater module such that the air flows through the heating element.
F24F 1/0093 - Indoor units, e.g. fan coil units characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
F24F 11/89 - Arrangement or mounting of control or safety devices
21.
POWER MANAGEMENT SYSTEM FOR A TRANSPORT REFRIGERATION UNIT
A vehicle (100) for transporting goods includes a transport refrigeration unit (150); an engine (110); and a power management system (200; 300; 400). The power management system (200; 300; 400) includes a battery unit (240; 340; 440) electrically connected to the transport refrigeration unit (150); and a generator (230; 330; 430) mechanically connected to the engine (110), the generator (230; 330; 430) being configured to be mechanically driven by the engine (110) and to supply electrical power to the battery unit (240; 340; 440). The power management system (200; 300; 400) is configured to supply electrical power to the transport refrigeration unit (150) from the battery unit (240; 340; 440) responsive to a power demand of the transport refrigeration unit (150).
B60H 1/00 - Heating, cooling or ventilating devices
B60P 3/20 - Vehicles adapted to transport, to carry or to comprise special loads or objects for transporting refrigerated goods
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
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
22.
FUEL IDENTIFICATION AND FLAME BEHAVIOR MONITORING SYSTEM
Described herein is a fuel identification and flame behavior monitoring system. The system comprises one or more sensors configured to monitor photons emitted from a flame emission during combustion of a fuel and correspondingly generate one or more spectrum signals associated with one or more radicals generated from the flame emission. A controller in communication with the one or more sensors is configured to determine a fuel composition of the fuel based on a variation in the one or more generated spectrum signals. The one or more generated spectrum signals vary based on an intensity ratio associated with the one or more radicals.
F23N 5/08 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
F23N 1/02 - Regulating fuel supply conjointly with air supply
CONTROL SYSYEM ARCHITECTURE FOR HEAT EXCHANGER CORROSION PREVENTION FOR LIQUID DESICCANT-BASED HEATING, VENTILATION, AIR-CONDITIONING AND REFRIGERATION SYSTEMS
A liquid desiccant (LD)-based dehumidification system is provided for heating, ventilation, air conditioning and refrigeration (HVAC&R) systems. The LD-based dehumidification system includes a tank containing LD, a contact media device including media for disposition in a flow of air to be dehumidified and a sump disposed below the media to receive LD drained from the media, a pump and valve system to pump the LD from the tank to the contact media device to wet the media and from the sump to the tank, a heat exchanger through which LD, which is pumped from the sump to the tank, flows, a sensing system to sense one or more conditions of the LD and a controller to control the pump and valve system in accordance with a system status and the one or more conditions of the LD.
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
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
Disclosed herein is a thermal energy storage (TES) system. The TES includes two or more energy storage blocks comprising a phase-change material, the energy storage blocks being arranged ordinally with respect to a corresponding nominal phase change temperature of the energy storage blocks, and two or more fluid lines routed through the one or more energy storage blocks. A first fluid line and a second fluid line from the two or more fluid lines are configured to circulate a corresponding fluid in opposite directions with respect to the one or more energy storage blocks. The ordinal arrangement provides increased efficiency for heat storage and/or transfer, as a fluid circulated through the first fluid line incrementally/decrementally rejects heat to the energy storage blocks.
Described herein is a heating, ventilation, and air conditioning (HVAC) system coupled to a domestic hot water (DHW) system. The HVAC system includes an indoor unit, at least one of the DHW system and/or a thermal energy storage module, an outdoor unit having a compressor and an outdoor heat exchanger, and a flow control assembly configured to selectively fluidically couple any or a combination of the indoor unit, the DHW system, the compressor, the thermal energy storage module, and/or the outdoor heat exchanger, among other components.
F24F 11/875 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling heat-storage apparatus
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
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
26.
LOAD SHIFTING USING FLOW CONTROL ASSEMBLY IN HEAT PUMP INTEGRATED WITH THERMAL ENERGY STORAGE
Described herein is a heat pump including an outdoor unit and an indoor unit (IDU), a thermal energy storage (TES) module, and a flow control assembly. The flow control assembly includes a check valve assembly fluidically coupled to the outdoor unit, and a selective flow assembly fluidically coupled to the check valve assembly and in selective fluidic communication with the IDU and/or the TES module, where the selective flow assembly is configured to selectively direct a fluid between at least one of, the IDU and/or the TES module and the check valve assembly.
An energy system having: a heating, ventilation and/or air conditioning (HVAC) system that includes an HVAC branch loop with an HVAC conditioning flow that flows in one direction or bidirectionally; a battery energy storage system (ESS) that includes a battery pack, having batteries, configured for an operating temperature within a target temperature range, an ESS conditioning loop with an ESS conditioning flow, wherein the ESS conditioning loop is thermally coupled to the battery pack, and the HVAC branch loop and the ESS conditioning loop are fluidly isolated from each other; a heat exchanger, wherein the HVAC branch loop and the ESS conditioning loop are thermally coupled to each other via the heat exchanger; and a controller configured to control flow within the HVAC branch loop and the ESS conditioning loop such that the battery pack operates within the target temperature range.
A liquid desiccant (LD)-based dehumidification system is provided for heating, ventilation, air-conditioning and refrigeration (HVAC&R) systems. The LD-based dehumidification system includes a contact media device including media for disposition in a flow of air to be dehumidified, surfactant and LD to wet the media. The LD is dosed with the surfactant to adjust a wettability of the media by the LD.
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
29.
CONTROLLING A VARIABLE-SPEED HEATING, VENTILATION AND AIRCONDITIONING SYSTEM USING A NON-COMMUNICATING TWO-STAGE THERMOSTAT
A variable-speed heat, ventilation and air conditioning (HVAC) system is provided and includes a thermostat configured to issue first, second and off signals in various combinations and sequences and an HVAC unit receptive of the first, second and off signals and configured to become non-operative and to operate in one of more than three stages responsive to the HVAC unit receiving the first, second and off signals in the various combinations and sequences with increasingly higher stages being associated with the HVAC unit delivering increasingly higher capacity.
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
30.
AIR PURIFICATION COMPONENTS, AIR CONDITIONING DEVICES
This application provides an air purification component and an air conditioning device. The air purification component includes: an outer housing that is cylindrical and rotatably arranged in an air duct; an opening provided on a cylindrical surface of the outer housing; an inner housing extending in an axial direction of the outer housing and built into the outer housing; an opening provided on a cylindrical surface of the inner housing; an ionizer fixing portion disposed on an inner surface of the inner housing; and an ionizer fixed to the ionizer fixing portion. The device according to this application can be driven by wind to ensure a self-cleaning function with zero energy consumption of the ionizer.
F24F 8/30 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
A power generation system for transportation refrigeration is provided. The power generation system includes a transport refrigeration unit (TRU) and an electrical system. The electrical system includes first and second battery packs disposed in parallel and independent from one another. The electrical system is configured to supply the TRU with electricity from only the first battery pack at a first time and from only the second battery at a second time and switch between the first and second battery packs exclusively supplying the TRU with electricity, transparently to the TRU, at an instant between the first and second times such that the TRU remains powered during the instant.
A cooling distribution unit associated with at least one rack system of a data center includes a first cooling system having a primary cooling circuit through which a heat transfer fluid is configured to circulate, a heat exchanger, a cooling system load arranged downstream from the heat exchanger relative to a flow of the heat transfer fluid, and at least one valve. A second cooling system having a secondary cooling circuit through which a coolant is configured to circulate includes a pump. The second cooling system is thermally coupled to the first cooling system at the heat exchanger. The heat transfer fluid provided to the cooling system load has a first constant temperature as a load at the heat exchanger varies.
A transportation refrigeration system is provided and includes a trailer refrigeration unit (TRU), a battery to provide electricity for the TRU, an electrical system and a controller. The electrical system includes a direct current (DC) bus electrically interposed between the battery and the TRU. The electrical system further includes an inverter and a boost converter disposed on the DC bus. The controller includes a memory unit storing first, second and third efficiency tables for the TRU, the inverter and the boost converter, respectively, and a processor. The processor sets an operational target for the TRU and achieves the operational target by controlling the inverter and the boost converter according to a voltage of the battery, the first, second and third efficiency tables and real-time operating conditions.
A cooling system includes a refrigeration circuit and a coolant circuit for cooling a working fluid to meet a cooling demand. The coolant circuit is thermally coupled to the refrigeration circuit. A free cooling circuit is in selective thermal communication with the refrigeration circuit and is in selective thermal communication with the coolant circuit.
A cooling distribution unit associated with at least one rack system of a data center includes a first cooling system having a primary cooling circuit through which a heat transfer fluid is configured to circulate and including a heat exchanger. A second cooling system has a secondary cooling circuit through which a coolant is configured to circulate and includes a pump. The second cooling system is thermally coupled to the first cooling system at the heat exchanger. A pressure at the pump remains constant as a load at the first heat exchanger varies.
A method of automating a pressure decay integrity test of a container configured for refrigeration by a transportation refrigeration unit (TRU) is provided. The method includes connecting a controller programmed with an automated pressure decay integrity test of the container to a compressor of the TRU and a pressure transducer installed in the container and executing the automated pressure decay integrity test by the controller. The executing includes activating the compressor to pressurize the container, receiving readings of the pressure transducer and determining, from the readings, whether the automated pressure decay integrity test is passed.
F25D 29/00 - Arrangement or mounting of control or safety devices
G01M 3/32 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
37.
METHOD AND SYSTEM FOR CONTROLLING OPERATION OF AN INDUCER MOTOR OF A COMBUSTION SYSTEM
Embodiments of the disclosure describe a method and a system for controlling an operation of an inducer motor of a furnace system. The method includes receiving an input comprising one or more of experimental data, field test data, and operational information associated with the furnace system along with associated environmental condition data. The method also include establishing a relationship associated with torque signals and motor speed of the inducer motor to a precise airflow rate based on the received input. The method further includes controlling the operation of the inducer motor based at least on the established relationship and a required mass flow rate of the air in the furnace system.
A heating, ventilation and air-conditioning (HVAC) system is provided. The HVAC system includes a first HVAC unit, a second HVAC unit including a battery, a panel receptive of grid power and a switch element. The switch element is separate from the panel and configured to assume a first state in which electricity is transmissible from the panel to the first and second HVAC units when the grid power is available and a second state in which electricity is transmissible from the battery to the first HVAC unit when the grid power is unavailable.
F24F 11/46 - Improving electric energy efficiency or saving
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
A vapor compression system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a closed fluid loop having a working fluid circulating therethrough. A thermal storage device includes a storage material and the thermal storage device is thermally coupled to the closed fluid loop downstream from the expansion device relative to a flow of the working fluid. The vapor compression system is controllable such that the thermal storage device is operable to both store heat and release heat as the working fluid circulates through the closed fluid loop in a given direction.
Heating and cooling systems include a heat exchanger assembly having a cooling element arranged within a heat exchanger housing, the heat exchanger housing defining a flow path from an inlet of the housing to an opening at an outlet of the heat exchanger housing. A deflector plate is arranged at the outlet of the heat exchanger housing, the deflector plate being configured to cause a backpressure within the heat exchanger housing of the heat exchanger assembly.
A method is provided for controlling a variable-speed heat, ventilation and air conditioning (HVAC) system. The method includes, responsive to a first signal, determining a system capacity and providing the system capacity by the variable-speed HVAC system to a space, responsive to the first signal and a second signal, providing a system maximum capacity by the variable-speed HVAC system to the space and, responsive to an off signal, shutting off of the variable-speed HVAC system.
An air conditioning system includes a vapor compression loop including a compressor, an expansion device, a first heat exchanger, a second heat exchanger, wherein a working fluid is configured to circulate within the vapor compression loop. An energy storage device is selectively operable to supply power to a component of the air conditioning system. A thermal management system includes a heat transfer fluid loop fluidly connecting the energy storage device and a coolant heat exchanger. A heat transfer fluid is configured to circulate through the heat transfer fluid loop. The thermal management system is thermally and fluidly coupled to the vapor compression loop at the coolant heat exchanger. The coolant heat exchanger is arranged in series with each of the compressor, the expansion device, the first heat exchanger, and the second heat exchanger within the vapor compression loop.
A method of allocating power sources in an air conditioning system includes determining a load demand of the air conditioning system; determining whether a demand response (DR) event or a time-of-use (ToU) high rate is occurring; in response to the DR event or ToU high rate not occurring, charging an energy storage device to an upper voltage, the charging performed at a predefined charging power level during a predefined charging period; in response to the DR event or ToU high rate occurring, determining an allocation of power sources to satisfy the load demand and discharging the energy storage device at a predefined discharging power level and a predefined discharging time period until the energy storage device reaches a lower voltage level or the DR event or ToU high rate is finished.
A low-voltage system of a transport refrigeration unit (TRU) includes a low-voltage direct current (LVDC) source; and a distribution bus coupled to the LVDC, the distribution bus is coupled to a compressor, at least one condenser, and at least one evaporator.
Described herein is a mixed-flow fan assembly. The assembly comprises an impeller comprising a plurality of blades extending from a rotatable hub, and a shroud extending circumferentially around the impeller, wherein the shroud is secured to the plurality of blades, a casing with a bellmouth disposed circumferentially around the shroud, defining a cavity between the casing and the shroud, with flow control clearance gaps at a downstream end and an upstream end of the casing. The assembly further comprises one or more first circular ribs extending axially from the shroud within the cavity and substantially parallel to a rotational axis of the impeller, and a plurality of de-swirl vanes configured at predefined positions on an inner surface of the bellmouth.
A fluid conditioning system includes a compressor, a first heat exchanger, a second heat exchanger, and a first expansion device, and a second expansion device fluidly connected to form a closed loop through which a working fluid circulates. The first expansion device is associated with operation of the fluid conditioning system in a first mode and the second expansion device is associated with operation of the fluid conditioning system in a second mode. The second expansion device is a thermostatic expansion device. An accumulator is fluidly connected to the closed loop upstream from the compressor relative to a flow of the working fluid. A back pressure regulator is fluidly coupled to the first heat exchanger, the second heat exchanger, and the second expansion device.
A system includes an air conditioning system associated with a building and at least one energy storage device including a thermally regenerative battery. A controller is configured to supply power from at least one of an AC power grid and the thermally regenerative battery to one or more components of the air conditioning system.
A transport refrigeration system including a transport refrigeration unit; an energy storage device; an engine system including a generator, a power converter configured to receive power from both the energy storage device and the engine system; a controller configured to control the power converter to power the transport refrigeration unit in response to a parameter of the energy storage device and a power demand of the transport refrigeration unit.
This application provides a detection method of an air conditioning system. When the air conditioning system is operating in a cooling mode and a fan of an indoor unit and an expansion valve need to be detected or debugged. When a difference between a return air temperature of the indoor unit and a heat exchanger coil temperature of the indoor unit within the first specified duration is greater than a specified fan determination threshold, it is determined that the fan of the indoor unit is faulty. A difference between a return air temperature difference of the first indoor unit and a heat exchanger coil temperature difference of the first indoor unit is detected, and when the difference is less than a specified expansion valve determination threshold, it is determined that the first expansion valve is faulty.
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
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 11/86 - 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
A method for offsetting power used by an air conditioning system coupled to an AC power grid at a point of common coupling (PCC), the method including: receiving a point of common coupling (PCC) setpoint, a charge limit, a discharge limit and a power demand of the first unit; selecting an operating mode from the following operating modes: a normal mode during which a first unit of the air conditioning system is powered by only the AC power grid; a charging mode during which the first unit of the air conditioning system is powered by only the AC power grid and an energy storage device is charged, a discharging mode during which the first unit of the air conditioning system is powered by both the AC power grid and the energy storage device.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 3/12 - Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
51.
CENTRIFUGAL COMPRESSOR, REFRIGERATION HEAT PUMP UNIT
This application provides a centrifugal compressor and a refrigeration heat pump unit, the centrifugal compressor includes a first compression chamber including a first inlet portion that includes a first variable guide vane, and a first outlet portion. A second compression chamber including a second inlet portion that includes a second variable guide vane, and a second outlet portion. A first impeller rotatably disposed inside the first compression chamber and disposed adjacent to the first variable guide vane. A second impeller rotatably disposed inside the second compression chamber and disposed adjacent to the second variable guide vane. A third impeller rotatably disposed inside the first compression chamber and located downstream of the first impeller. A first bypass pipe allowing a discharge flow passage of the third impeller to communicate with an inlet of the third impeller.
This application provides a control method and control device for an air conditioning system, and an air conditioning system using the control method or including the control device. When switched to heating mode, a hot gas valve and a liquid injection valve are opened, and a main heat valve is closed. A condenser is excluded from refrigerant circulation. The refrigerant is heated by a motor of a compressor and exchanges heat with the outside via an evaporator to raise indoor ambient temperature. Part of the refrigerant returns to the compressor, while the rest enters a liquid reservoir via the liquid injection valve to reduce refrigerant flow rate and improve energy utilization. When operating for a specified time or when the indoor ambient temperature reaches a specified heating temperature, the liquid injection valve is closed to retain sufficient refrigerant in the heating circulation and avoid continuous decrease in heating performance.
Described herein is a heat exchanger assembly that comprises a first heat exchanger comprising a first inlet header, a first outlet header, and a plurality of first heat exchange tubes fluidically connected to and extending between the first inlet header and the first outlet header. The heat exchanger assembly further comprises a second heat exchanger comprising a second inlet header, a second outlet header, and a plurality of second heat exchange tubes fluidically connected to and extending between the second inlet header and the second outlet header. Further, the heat exchanger assembly comprises a first outlet connector connected to a first end of the first outlet header, and a second outlet connector connected to a first end of the second outlet header, wherein a second end, opposite to the first end, of the respective first outlet header and the second outlet header are adjacent to each other.
A method for managing an energy storage device in an air conditioning system includes determining capacity of an AC power grid connected to the air conditioning system; in response to the AC power grid having high capacity, operating the air conditioning system in a first mode; and in response to the AC power grid having low capacity, operating the air conditioning system in a second mode.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
An assembly includes a fluid conditioning system including a cascade module and an active charge compensator integrated into the fluid conditioning system. The fluid conditioning system is transformable between a first mode and a second mode. In the first mode, the fluid conditioning system includes a first vapor compression loop and a second vapor compression loop. The first vapor compression loop and the second vapor compression loop are thermally coupled at the cascade module and the second vapor compression loop is fluidly separate from the first vapor compression loop. In the second mode, the fluid conditioning system includes a single vapor compression loop. The active charge compensator is operable to control a working fluid charge within the fluid conditioning system based on the mode of operation selected from the plurality of modes.
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 45/00 - Arrangements for charging or discharging refrigerant
This application provides a screw compressor and a slide valve thereof. The slide valve includes: a valve body having a cylindrical shape extending in an axial direction, with a side surface having a pressure discharge surface that matches an outer peripheral contour of a rotor of the screw compressor; a discharge chamber provided at an end of the pressure discharge surface along the axial direction; a slider provided in the discharge chamber, and configured to slide along a radial direction of the valve body, a shape of an outer edge of the slider matching a shape of the pressure discharge surface; and a spring connected to the slider and configured to drive the slider to slide to a position where the outer edge of the slider is flush with the pressure discharge surface.
F04C 2/16 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F16K 3/30 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing Details
This application provides a refrigeration system. By a regenerator with an inlet on a primary side connected to an outlet of a condenser, an outlet on the primary side connected to an inlet of an expansion valve, an inlet of a secondary side connected to an outlet of an evaporator, and an outlet of the secondary side connected to an inlet of a compressor, a medium-temperature and high-pressure refrigerant liquid discharged from the condenser and a part of a low-temperature and low-pressure refrigerant gas discharged from the evaporator exchange heat in the regenerator, thereby improving subcooling of the refrigerant liquid at the inlet of the expansion valve and superheating of the refrigerant gas at the inlet of the compressor.
F25B 43/02 - Arrangements for separating or purifying gases or liquidsArrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
Described herein is a system for controlling an HVAC unit. The system comprises a controller configured to monitor temperature of air upstream and downstream of an indoor coil of the HVAC unit, and control, based on the monitored temperature, speed of one or more fans configured with the indoor coil to maintain a temperature difference across the indoor coil.
F24F 11/81 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
F24F 11/523 - Indication arrangements, e.g. displays for displaying temperature data
Disclosed herein is a system for power supply management in a vehicle equipped with a transport refrigeration unit (TRU). The system comprises a controller connected to the TRU. Controller comprises a processor with access to a memory storing instructions executable by processors, which causes controller to adapt operation of one or more components of the TRU to adjust electrical power consumption of the TRU to a determined power level, based on one or more of electrical attributes of electrical power supplied to battery, real-time electrical power consumption of TRU, and real-time state of charge (SOC) of battery.
B60L 1/00 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
63.
SYSTEM AND METHOD FOR CONTROLLING OPERATION OF A HEAT PUMP
Described herein is a system and a method for controlling operation of a heat pump. The system comprises an electronic expansion valve (EXV) configured to fluidically connect an indoor unit of the heat pump with an outdoor unit of the heat pump, and a controller operatively connected to the EXV, where the controller is configured to issue a first control signal, during a first defrost mode, to at least partially close the EXV to increase discharge pressure in an outdoor coil of the outdoor unit to facilitate defrosting of the outdoor coil.
An electrical architecture for an electric/engineless trailer refrigeration unit (ETRU) is provided. The electrical architecture includes a battery, multiple auxiliary direct current (DC) power sources, multiple auxiliary alternating current (AC) power sources, TRU components, a master controller and a reconfigurable power conversion unit (RPCU). The RPCU is configurable by the master controller to transmit electrical power between the battery, the multiple auxiliary DC power sources, the multiple auxiliary AC power sources and the TRU components in accordance with current operational conditions, power levels of the battery, the multiple auxiliary DC power sources and the multiple auxiliary AC power sources and power demands of the TRU components.
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
B60P 3/20 - Vehicles adapted to transport, to carry or to comprise special loads or objects for transporting refrigerated goods
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
H02J 5/00 - Circuit arrangements for transfer of electric power between ac networks and dc networks
65.
AIR HANDLING UNIT FOR USE WITH AN AIR CONDITIONING SYSTEM
Disclosed herein is an air handling unit (AHU) for use with an air conditioning system. The AHU comprises a housing defining the shape of the AHU, through which air is moved; a heat exchanger is disposed inside the housing. The heat exchanger is configured to facilitate a transfer of heat to and from the air moving through the housing. The AHU further comprises a diagonal-flow fan disposed inside the housing, wherein an air inflow into the fan and/or an air flow path through the fan is substantially axial, aligned along an axis of rotation of the fan, and wherein the AHU has a height-to-width ratio in a range between 1.8 and 2.0.
This application provides a water chilling unit including a compressor and a condenser, in which an outlet of the compressor communicates with an inlet of the condenser through a compressor outlet pipeline, and a check valve with a magnet is also provided in a discharge pipeline. During normal operation of the water chilling unit, the check valve is maintained at the maximum opening through attraction of opposite magnetic poles, and when the water chilling unit stops operating, the closure of the check valve is cushioned through repulsion of like magnetic poles.
This application provides a fluid distributor and a heat exchanger. The fluid distributor includes: a first plate-shaped member in which an inlet flow passage is formed; a second plate-shaped member in which a first outlet flow passage and a second outlet flow passage spaced apart in a height direction are formed; a flow guide frame sealingly fixed between the first plate-shaped member and the second plate-shaped member, having a first flow guide space and a second flow guide space partitioned inside. The flow guide frame includes a flow equalizing plate, and the flow equalizing plate includes a flow equalizing plate bottom portion, and flow equalizing plate extension portions which extend upward from the flow equalizing plate bottom portion to two sides of the flow equalizing plate bottom portion while being inclined in the height direction. This application improves uniformity and a fault tolerance of a refrigerant distribution.
F28F 1/34 - 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 obliquely
68.
POWER CONVERTER DESIGN FOR ELECTROCALORIC AIR CONDITIONING SYSTEMS
A heat transfer system includes a first electrocaloric module comprising a first electrocaloric material, a first high-side electrode, and a first low-side electrode, arranged to impart an electric field to the electrocaloric material; a second electrocaloric module comprising a second electrocaloric material, a second high-side electrode, and a second low-side electrode, arranged to impart an electric field to the electrocaloric material; a power convertor including a power source configured to supply power to a high side bus and a low side bus; a controller configured to operate the power convertor through a plurality of stages.
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
F25B 21/00 - Machines, plants or systems, using electric or magnetic effects
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
69.
FLUID DISTRIBUTOR FOR A SHELL-AND-TUBE FLOODED EVAPORATOR
Described herein is a distributor for a shell-and-tube flooded evaporator. The distributor comprises a first header comprising one or more first outlets located along a length at a bottom side of the first header, and a second header comprising one or more second outlets located along a length at a bottom side of the second header. The distributor is configured to be disposed within a shell associated with the evaporator such that the first header and the second header extend along a length, on opposite sides of an inner wall of the shell, and the first header and the second header are fluidically connected to one or more refrigerant inlet tubes provided on the shell.
Described herein is a device for displaying subcooling data of a refrigeration circuit associated with an HVAC system. The device comprises a display module having a predefined display area configured to display at least two characters at a time, wherein the display module is configured to receive subcooling data of the refrigeration circuit and display the received subcooling data over the predefined display area in alphanumeric and/or string characters while scrolling or paging the data thereover in a predefined direction and at a predefined interval.
G09G 3/18 - Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments by control of light from an independent source using liquid crystals
71.
POWER SYSTEM FOR TRANSPORTATION REFRIGERATION UNIT AND METHOD FOR CONTROLLING POWER THEREOF
A power system for a vehicle having a TRU is disclosed. The power system includes an energy storage unit adapted to supply power to the TRU, and includes an axle generator electrically connected to the energy storage unit to supply power to the energy storage unit and the TRU. The power system includes a pressure sensor to sense ambient pressure, and includes a power supply system. The power supply system is configured to determine a SoC of the energy storage unit, and is configured to determine an altitude of the power system based on the ambient pressure. The power supply system is configured to determine a power output of the axle generator, and configured to adjust a power supplied by the energy storage unit and the axle generator to the TRU based on the determined SoC, the determined altitude, and the determined power output.
B60P 3/20 - Vehicles adapted to transport, to carry or to comprise special loads or objects for transporting refrigerated goods
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
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
This application provides a refrigeration apparatus using a main fan to cool an electronic control device while meeting heat exchange requirements of a heat exchanger. By arranging a first air duct and a second air duct in parallel, and controlling a relationship between a cross-sectional area of a first air duct inlet and a cross-sectional area of a second air duct outlet, and a relationship between a cross-sectional area of a second air duct inlet and the cross-sectional area of the second air duct outlet, air flowing into the first air duct after heat exchange with a refrigerant in the heat exchanger and air in the second air duct after heat exchange with the electronic control device are merged in the first air duct, and are discharged from the refrigeration apparatus through a first air duct outlet.
F25D 17/06 - 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
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
73.
TRANSPORT REFRIGERATION UNIT AND A METHOD FOR CONTROLLING A BATTERY PACK
Described herein is a transport refrigeration unit (TRU). The TRU comprises a controller connected to a switching module associated with a battery pack and a TRU battery within the TRU, wherein the battery pack is connected to the TRU via the switching module; wherein the controller comprises a processor with access to a memory storing instructions executable by the processors, which causes the controller to issue an activation electrical power signal from the TRU battery to the switching module to activate the battery pack by establishing an electrical connection between the battery pack and the TRU.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
74.
DEVICE, SYSTEM, AND METHOD FOR DETERMINING CHARGE SETTINGS FOR A REFRIGERATION CIRCUIT
Disclosed herein is a system for determining charge settings for a refrigeration circuit of an HVAC unit. The system comprises a controller comprising one or more processors coupled to a memory storing instructions executable by the processors, wherein the controller is configured to receive a set of data pertaining to an operating environment of the HVAC unit and an internal volume of the refrigeration circuit, estimate a saturated suction temperature of a refrigerant in the refrigeration circuit based on the operating environment, and determine a weight of the refrigerant to be added to the refrigeration circuit or a subcooling target temperature for a liquid line associated with the refrigeration circuit based on the estimated saturated suction temperature and the internal volume.
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 chiller system includes a compressor, a condenser, an expansion device, and an evaporator operably coupled to form a closed fluid loop having a fluid circulating therethrough. A flow of a cooling fluid is arranged in a heat transfer relationship with the fluid at the condenser. An energy transfer device is located downstream from the condenser relative to the flow of the cooling fluid. The energy transfer device is arranged in fluid communication with a third fluid and at least a portion of the heat from the fluid is transferred to the third fluid at the energy transfer device.
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 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves
77.
BATTERY PACK, AIR CONDITIONING SYSTEM, AND METHOD FOR THE SAME
Described herein is an air conditioning system comprising a battery box configured to output an output voltage, and a control board circuit configured to receive the output voltage from the battery box for a safe operation, wherein during the safe operation, the control board circuit is configured to actuate at least one of a refrigerant dissipation system and/or a safety shut-off valve to perform a shutdown operation when the output voltage provided by the battery box is greater than a preset threshold.
A sealing system for a magnetic levitating centrifugal compressor, the magnetic levitating centrifugal compressor including a motor cavity and a motor shaft disposed within the motor cavity, an end of the motor shaft extends out from the motor cavity and is mounted with an impeller, the sealing system includes: a seal which is sleeved on the outer side of the motor shaft and is disposed between the impeller and the motor cavity; a first magnet which is fixed at the outer surface of the motor shaft; and a second magnet which is fixed at a side of the seal facing the motor shaft; the first magnet and the second magnet form a radial repulsive force in the radial direction of the motor shaft, so that the seal can be levitated in relative to the motor shaft and move therewith.
A vapor compression system includes a compressor, a condenser, an expansion device, and an evaporator fluidly connected to form a closed fluid loop having a fluid circulating therethrough. A thermal storage device including a phase change material is fluidly connected to and is arranged downstream from an outlet of the compressor relative to a flow of the fluid. A storage expansion device is arranged downstream from the thermal storage device and upstream from the evaporator and a valve is adjustable between a plurality of positions to control the flow of the fluid from the compressor to the thermal storage device.
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
F24F 11/83 - 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
80.
MEDIUM-TO-HIGH VOLTAGE POWER SYSTEM FOR A TRANSPORT REFRIGERATION UNIT
A high-voltage system for a transport refrigeration unit (TRU) includes a high-voltage direct current (HVDC) source, and a first converter coupling the HVDC source to a distribution bus, the distribution bus is coupled to a compressor, at least one condenser, and at least one evaporator. A distribution bus is coupled to a compressor bus coupled to the compressor, a condenser bus coupled to the at least one condenser, and an evaporator bus coupled to the at least one evaporator.
A compressor includes a cylinder block having a first bore and a cylinder head overlapping the cylinder block. The cylinder head has a second bore aligned with the first bore. The second bore is separated into a plurality of distinct regions including a suction region and an economizer region. A plurality of valves includes a suction valve selectively operable to fluidly couple the suction region and the first bore, and an economizer valve selectively operable to fluidly couple the economizer region and the first bore.
F25B 1/10 - Compression machines, plants or systems with non-reversible cycle with multi-stage compression
F04B 25/04 - Multi-stage pumps specially adapted for elastic fluids having cylinders coaxial with, or parallel or inclined to, main shaft axis
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
82.
DIRECT DRIVE REFRIGERANT SCREW COMPRESSOR WITH REFRIGERANT LUBRICATED ROTORS
Disclosed is a direct-drive refrigerant screw compressor, having: a housing; a compression chamber in the housing; a pair of rotors, each rotor of the pair of rotors being rotationally disposed in the compression chamber and including an outer surface with a screw-geared profile; a fluid being disposed in the compression chamber, the fluid consisting of a working fluid for providing lubrication to each rotor; a first port extending through the housing and configured for directing the fluid toward the compression chamber; and when the compressor is activated, each rotor rotates and the fluid is distributed about each rotor to lubricate each rotor.
F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
F25B 1/047 - Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of screw type
83.
AIR HANDLING UNIT HAVING A HEAT SHIELD FLOW DISTRIBUTOR
Described herein is an air handling unit (AHU), comprising a motor-driven fan configured to generate an airflow through a housing, one or more heat elements downstream of the fan to heat the airflow, a control box within the housing containing control electronics to control the heat elements, and a supplementary heat shield between the heat elements and the control box. The supplementary heat shield and control box form a passage for airflow, allowing the control electronics to dissipate thermal losses, and the heat shield reduces heat transfer from the heat elements.
The disclosure provides a control method and a control device for a compressor unit, in which oil levels of a first compressor and a second compressor can be adjusted without additionally arranging an oil return pipeline. A first aspect of this application provides a control method for a compressor unit, the compressor unit having a first compressor and a second compressor, and the first compressor and the second compressor being in communication with each other through a gas balance pipe and an oil balance pipe. The compressor unit has a conventional operation step and an oil level adjustment step that are alternately executed, and in the oil level adjustment step, the compressor unit changes a rotation speed of the first compressor and/or the second compressor to adjust oil levels of the first compressor and the second compressor.
An electrical power supply system for an electric transport refrigeration unit. The electrical power supply system is for providing AC power to a refrigeration system and includes: a DC power source for providing a DC voltage via a low voltage line and a high voltage line; an inverter for receiving the DC voltage and converting it to a three phase AC voltage for powering the refrigeration system; and an electromagnetic compatibility, EMC, filter between the inverter and the refrigeration system. The EMC filter uses a common mode current path that connects to a DC link, where the DC link is provided between the high voltage line and the low voltage line of the DC power source. The common mode current path is hence coupled to the DC link in order to provide a floating current connection for common mode current from the EMC filter.
B60R 16/03 - 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
B60P 3/20 - Vehicles adapted to transport, to carry or to comprise special loads or objects for transporting refrigerated goods
F25D 11/00 - Self-contained movable devices associated with refrigerating machinery, e.g. domestic refrigerators
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
Described herein is a transport refrigeration unit (TRU). The TRU comprises an evaporator, and a variable frequency drive (VFD) operatively coupled to a compressor and/or an evaporator fan associated with the TRU, wherein the VFD is at least partially disposed within an evaporator compartment or fully disposed within a structure separating the evaporator compartment and a condenser compartment associated with the TRU.
Described herein is a method for tampering detection in at least one passive component of a heating, ventilation, air conditioning, and refrigeration (HVAC-R) system, the method comprising attaching one or more devices to a corresponding fastener of the at least one passive component, wherein the one or more devices are configured to transmit an alert signal based on at least one of a position of a sensing element of the one or more devices, vibration detections between the one or more devices and the at least one passive component, and/or unresponsiveness of at least one neighboring device, determining, by a controller, a tamper state of the at least one passive component based on the alert signal, and transmitting, by the controller, an electronic control signal to at least one of the one or more devices and/or the HVAC-R system based on the tamper state.
A Heating Ventilation and Air Conditioning (HVAC) burner assembly is disclosed. The HVAC burner assembly includes one or more burners comprising a downstream side and an inlet disposed on an upstream side. An inlet manifold, in fluid communication with the inlet of the one or more burner, is adapted to supply a primary air-fuel mixture to the inlet of the one or more burner. At least one mechanical blower is in fluid communication with the inlet manifold. The at least one mechanical blower includes an impeller adapted to receive and mix a fuel with primary air for generating the primary air-fuel mixture.
F23D 14/04 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
F23C 1/00 - Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in air
F23D 14/60 - Devices for simultaneous control of gas and combustion air
A transportation refrigeration unit (TRU) and power system. The TRU and power system including a compressor configured to compress a refrigerant, an evaporator heat exchanger operatively coupled to the compressor, and an evaporator fan configured to provide return airflow and flow the return airflow over the evaporator heat exchanger. The system also includes a return air temperature (RAT) sensor disposed in the return airflow and configured measure the temperature of the return airflow, a TRU controller operably connected to the RAT sensor and configured to execute a process to determine an AC power requirement for the TRU based on at least the RAT; a generator power converter configured to receive a generator three phase AC power and provide DC power to an energy storage system, a power management system, the power management system configured to direct power the TRU based on the AC power requirement.
An energy control system for use with an electric vehicle having an energy storage device that powers both the propulsion system of the vehicle and a transport refrigeration unit that is configured to condition a cargo space of the vehicle; the energy control system is configured to receive a user selection relating to energy to be allocated to the propulsion system and/or the transport refrigeration unit; and the energy control system is configured to provide control for an energy allocation of the available energy in the energy storage device between the propulsion system and the transport refrigeration unit based on the user selection and the available energy in the energy storage device.
B60H 1/00 - Heating, cooling or ventilating devices
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
92.
REFRIGERATION SYSTEM AND REFRIGERATED VAN HAVING THE SAME
A refrigeration system comprises a compressor, a condenser, a reservoir, a throttling device, an evaporator, and a cooling device for cooling high-temperature components connected in sequence through pipes. The cooling device has a heat exchange container and a flow pipe, where the heat exchange container maintains fluid communication with the reservoir through the flow pipe, and the heat exchange container is used to absorb heat of the high-temperature components. The heat exchange container receives liquid refrigerant from the reservoir through the flow pipe, the liquid refrigerant in the heat exchange container generates vapor after heat exchange with heat absorbed from the high-temperature components, and the vapor enters the reservoir through the flow pipe, thus forming a circulation loop. Also described is a refrigerator van configured with a refrigeration system.
This application provides an ejector refrigeration system including: a compressor having a suction port and a discharge port; a first heat exchanger connected to the discharge port of the compressor to receive a fluid working medium flowing out from the discharge port of the compressor; and an ejector including a primary flow inlet connected to the first heat exchanger to receive a fluid working medium from the first heat exchanger, a secondary flow inlet, and an ejector outlet connected to the suction port of the compressor to return a fluid working medium entering the ejector to the suction port of the compressor; and a phase adjustment mechanism configured to adjust a phase state of the fluid working medium entering the primary flow inlet of the ejector or adjust a gas-liquid ratio of the fluid working medium at the primary flow inlet, thereby enabling the ejector to generate sufficient pressure lift.
This application provides a refrigeration heat pump unit, including a refrigerant circuit formed by a centrifugal compressor, a condenser, a throttling device, and an evaporator. The centrifugal compressor includes a housing, a first motor, a second motor, a first compression chamber, a second compression chamber, a first impeller, a second impeller, and a controller. The controller is configured to turn on the first motor and turn off the second motor in response to a first working condition, turn off the first motor and turn on the second motor in response to a second working condition, and turn on the first motor and the second motor in response to a third working condition.
A hybrid fuel cell system is disclosed. The hybrid fuel cell comprises a fuel cell adapted to supply power to a load. The hybrid fuel cell further comprises an Electrical Air Compressor (EAC) unit operatively coupled with the fuel cell. Also, the hybrid fuel cell comprises an auxiliary power source connected to the EAC unit via a Direct Current to Alternative Current (DC-AC) converter. Furthermore, the hybrid fuel cell comprises a converter circuit configured to perform at least one of enable the auxiliary power source to supplement the fuel cell to provide collective power supply to a load during the initialization phase of the fuel cell, enable the fuel cell to provide either the input power supply or a supplement power supply to the EAC unit during an operational phase of the fuel cell, or enable the fuel cell to charge the auxiliary power source.
H01M 8/04225 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-downDepolarisation or activation, e.g. purgingMeans for short-circuiting defective fuel cells during start-up
H01M 8/04111 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants using a compressor turbine assembly
H01M 8/04302 - Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
An assembly includes a heat pump and a cascade module fluidly couplable to the heat pump. The cascade module is fluidly connected to the heat pump during a first mode of operation to increase a capacity of the heat pump and the cascade module is not fluidly connected to the heat pump during a second mode of operation.
F24F 3/00 - 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
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
97.
COMMUNICATION CIRCUIT, COMMUNICATION SYSTEM, AND AIR CONDITIONING SYSTEM
The present invention relates to a communication circuit, a communication system, and an air conditioning system provided with the communication circuit and the communication system. The communication circuit includes a control chip, a first data bus transceiver, a second data bus transceiver, and a switch circuit. The first data bus transceiver has one end connected to the control chip and the other end connected to the first external device; the second data bus transceiver has one end connected to the control chip and the other end connected to the second external device; and the switch circuit is connected to the first data bus transceiver and the second data bus transceiver. The communication circuit realizes automatic switching of two independent RS485 communication buses according to a requirement of communication data, thereby realizing device interconnection and real-time data exchange on the two independent RS485 communication buses. Accordingly, the communication efficiency is improved.
This application provides an HVAC system, a control method for an HVAC system, and a computer-readable storage medium. The HVAC system includes a chiller/heat pump unit, an air handling unit and a controller. The chiller/heat pump unit provides working fluid. The air handling unit is provided with a heat exchanger, air is blown indoors after exchanging heat with the working fluid flowing through the heat exchanger, and the air handling unit adjusts the supply air temperature based on a temperature setpoint. The controller is configured to acquire an expected emission level of an energy source powering the HVAC system and adjust the temperature setpoint based on the expected emission level.
This application provides a refrigerating system including a first throttling device control mode setting module and a first throttling device control module. The first throttling device control mode setting module receives at least one parameter associated with operation of a compressor, determines whether the at least one parameter indicates that the compressor is under a preset surge protection condition, and selects between a normal control mode and a surge protection control mode based on the determination. The first throttling device control module controls the first throttling device in the normal control mode in response to the first throttling device control mode setting module selecting the normal control mode, and controls the first throttling device in the surge protection control mode in response to the first throttling device control mode setting module selecting the surge protection control mode.
This disclosure provides a heat exchanger unit and an air conditioning system. The heat exchanger unit includes: a first heat exchanger, included in a first housing provided with a first refrigerant inlet and a first refrigerant outlet, and a first heat exchanging tube bundle disposed in the first housing; a second heat exchanger, included in a second housing provided with a second refrigerant inlet and a second refrigerant outlet, and a third heat exchanging tube bundle disposed in the second housing and having an inlet in communication with an outlet of the first heat exchanging tube bundle; a third heat exchanger, and a first heat exchanging flow passage; and a fourth heat exchanger, and a second heat exchanging flow passage and having an inlet in communication with an outlet of the first heat exchanging flow passage.
F28D 1/04 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits
F28D 1/053 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
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