Abrégé

An energy efficient system for generating liquefied or supercritical CO2 comprises a pressure vessel having at least three ports in fluid communication with a corresponding conduit; an ongoing source of gaseous CO2 which is deliverable to a first port of the pressure vessel; and a pump for delivering a liquid to a second port of the pressure vessel, wherein the CO2 is substantially isothermally compressible within the pressure vessel to a liquid or supercritical state upon direct contact with the delivered liquid, wherein, following introduction of a sufficient additional volume of the liquid to the pressure vessel, at least a portion of the compressed CO2 is dischargeable from a third port of the pressure vessel. In an energy storage system, at least some of the liquid located in the pressure vessel is propellable through an additional port of the pressure vessel by the compressed CO2, to discharge stored energy.

Classes IPC  ?

• F17C 5/00 - Procédés ou appareils pour remplir des récipients sous pression de gaz liquéfiés, solidifiés ou comprimés
• F17C 5/02 - Procédés ou appareils pour remplir des récipients sous pression de gaz liquéfiés, solidifiés ou comprimés pour le remplissage avec des gaz liquéfiés

Abrégé

An energy storage system has a pressure vessel that is exposed to ambient temperatures and that contains a working fluid which is condensable at ambient temperatures (CWF); a liquid reservoir in communication with one of the vessels and containing a liquid that is unvaporizable in the reservoir and in the vessel; and apparatus for delivering the liquid from the reservoir to the vessel. The CWF is compressible within the vessel upon direct contact with the liquid and is storable in a liquid state after being compressed to its saturation pressure. In a method, at least some of the liquid located in the vessel is propelled by the CWF towards a turbine to produce power. In one embodiment, a module has a first vessel having at least four ports, a second vessel at ambient temperatures, and a flow control component operatively connected to a corresponding conduit for selectively controlling fluid flow.

Classes IPC  ?

• F03B 1/02 - AugetsRotors portant les augets
• F03D 9/14 - Combinaisons des mécanismes moteurs à vent avec un appareil emmagasinant de l’énergie emmagasinant de l’énergie gravitationnelle potentielle utilisant des liquides

Abrégé

A well pumping apparatus including a discharge head (110), a drive string rod (130) in fluid communication with an inner cavity (142) of a production tubing (140), a pre-lubrication port (160) at the discharge head, and lubrication cups (134) installed along the drive string rod adjacent to sets of bearings (150) distributed along the drive string rod.

Classes IPC  ?

• E21B 43/12 - Procédés ou appareils pour commander l'écoulement du fluide extrait vers ou dans les puits
• F04D 29/06 - Lubrification
• F04D 29/046 - Paliers

Abrégé

Turbine apparatus includes turbine wheels by which introduced motive fluid is expanded; a horizontally disposed turbine shaft which is rotatably supported by inlet-side and outlet-side bearings, such that the turbine wheels are fixedly connected to the turbine shaft between the inlet-side and outlet-side bearings; a turbine housing by which the turbine wheels and the outlet-side bearing are encased; and a bearing cartridge in which the inlet-side bearing is housed that is mounted externally to the turbine housing. The bearing cartridge is separable from the turbine housing to facilitate a maintenance operation when the inlet-side bearing is disengaged from the turbine shaft. In a method for accessing a malfunctioning inlet-side component contactable with the turbine shaft in order to perform a maintenance operation, the bearing cartridge is dismounted from a surface of the turbine housing and the bearing cartridge is axially displaced in a direction away from the turbine housing.

Classes IPC  ?

• F01D 25/16 - Aménagement des paliersSupport ou montage des paliers dans les stators
• F02C 7/06 - Aménagement des paliersLubrification
• F02C 7/28 - Agencement des dispositifs d'étanchéité

Abrégé

A geothermal district heating (DH) system includes a plurality of DH conduits each of the conduits extending to a corresponding heat consumer; means for delivering a DH-usable fluid through said plurality of DH conduits; a fluid circuit through which a geothermal fluid is flowable; and at least two heat exchangers, each of the heat exchangers configured to transfer heat directly or indirectly from the geothermal fluid to said DH-usable fluid with a total heat influx provided by the at least two heat exchangers to said DH-usable fluid that is sufficiently high to raise a temperature of the DH-usable fluid to a predetermined DH-usable temperature without need for any supplemental fossil fuel derived waste heat to be transferred to said DH-usable fluid.

Classes IPC  ?

• F24D 10/00 - Systèmes de chauffage urbain
• F01K 11/02 - Ensembles fonctionnels de machines à vapeur caractérisés par des machines motrices faisant corps avec les chaudières ou les condenseurs les machines motrices étant des turbines
• F01K 17/02 - Utilisation de la vapeur ou des condensats provenant soit du soutirage, soit de la sortie des ensembles fonctionnels de machines motrices à vapeur pour le chauffage, p. ex. industriel, domestique
• F01K 25/08 - Ensembles fonctionnels ou machines motrices caractérisés par l'emploi de fluides énergétiques particuliers non prévus ailleursEnsembles fonctionnant selon un cycle fermé, non prévus ailleurs utilisant des vapeurs particulières
• F01K 27/02 - Ensembles fonctionnels modifiés pour utiliser la chaleur perdue autre que celle provenant de l'évacuation, p. ex. la chaleur de frottement à l'intérieur de la machine motrice
• F02C 6/18 - Utilisation de la chaleur perdue dans les ensembles fonctionnels de turbines à gaz à l'extérieur des ensembles eux-mêmes, p. ex. ensembles fonctionnels de chauffage à turbine à gaz