Thermal energy storage and retrieval systems
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United States of America Patent
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Dec 19, 2017
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N/A
app pub date -
Dec 5, 2016
filing date -
Feb 3, 2016
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Abstract
A thermal energy storage and retrieval device includes at least one working fluid and a plurality of thermodynamic circuits. Each thermodynamic circuit has a first process exchanging heat with a first material in a first temperature range common for all of the thermodynamic circuits. Each thermodynamic circuit also has a second process exchanging heat with a second material in a second temperature range. The second material comprises a heat storage material or a working fluid in another circuit or another device. Each thermodynamic circuit includes a gas pressure changing device and a liquid pressure changing device.
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