A thermal energy storage system with environmental air exchange and a method of its operation

A thermal energy storage, TES, system (100) comprises a thermodynamic gas flow circuit containing air as a working fluid for transport of thermal energy through the TES system. The air is maintained in gas phase throughout the entire gas flow circuit, which is open to the environment. Air is receive...

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Bibliographische Detailangaben
Hauptverfasser:	Niels Vinther Voigt, Henrik Stiesdal
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES GAS-TURBINE PLANTS HEAT EXCHANGE IN GENERAL HEAT PUMP SYSTEMS HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MACHINES OR ENGINES FOR LIQUIDS MACHINES OR ENGINES IN GENERAL MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A thermal energy storage, TES, system (100) comprises a thermodynamic gas flow circuit containing air as a working fluid for transport of thermal energy through the TES system. The air is maintained in gas phase throughout the entire gas flow circuit, which is open to the environment. Air is received (7) from the environment and pressurized by a compressor (2), driven by a motor (1A), for use as a working fluid with increased temperature, followed by transfer of thermal energy to a first TES medium (5') during charging prior to release (7') of the working fluid to the environment again. In discharging cycles, the air is received from the environment and used as working fluid in reverse flow through the first TES medium (5') for being heated by the first TES medium prior to driving an expander (3), typically a turbine, which in turn drives an electrical generator (1B) for recovery of electrical energy.