Pumped heat energy storage system with electric heating integration
AssigneeMalta Inc.
InventorsBenjamin R. BOLLINGER, Bao H. TRUONG
Life of this patent
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Abstract
A method including: (i) operating a pumped-heat energy storage system (“PHES system”) in a charge mode to convert electricity into stored thermal energy in a hot thermal storage medium (“HTS medium”) by transferring heat from a working fluid to a warm HTS medium, resulting in a hot HTS medium, wherein the PHES system is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity; and (ii) heating the hot HTS medium with an electric heater above a temperature achievable by transferring heat from the working fluid to the warm HTS medium.
Claims22
1-20. (canceled)
A system comprising:
- a pumped-heat energy storage (“PHES”) system, wherein the PHES system is operable in a charge mode to convert electricity into stored thermal energy in a hot thermal storage (“HTS”) medium by transferring heat from a working fluid to a warm HTS medium, resulting in the hot HTS medium, and wherein the PHES system is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity;
- and
- an electric heater in thermal contact with the hot HTS medium, wherein electric heater is operable to increase an amount of thermal energy stored in the PHES system, while output of turbomachinery of the PHES system is reduced.
A method comprising:
- operating a pumped-heat energy storage system (“PHES system”) in a charge mode to convert electricity into stored thermal energy in a hot thermal storage medium (“HTS medium”) by transferring heat from a working fluid to a warm HTS medium, resulting in the hot HTS medium, wherein the PHES system is further operable in a generation mode to convert at least a portion of the stored thermal energy into electricity;
- and
- heating the hot HTS medium with an electric heater to increase an amount of thermal energy stored in the PHES system, while output of turbomachinery of the PHES system is reduced.
Dependencies are inferred from the claim text.