Pumped heat electric storage system with recirculation
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United States of America Patent
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Dec 26, 2023
Grant Date -
Dec 8, 2022
app pub date -
Nov 16, 2020
filing date -
Nov 16, 2019
priority date (Note) -
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Abstract
The present disclosure provides pumped thermal energy storage systems that can be used to store and extract electrical energy. A pumped thermal energy storage system of the present disclosure can store energy by operating as a heat pump or refrigerator, whereby net work input can be used to transfer heat from the cold side to the hot side. A working fluid of the system is capable of efficient heat exchange with heat storage fluids on a hot side of the system and on a cold side of the system. The system can extract energy by operating as a heat engine transferring heat from the hot side to the cold side, which can result in net work output.
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