MULTI-MODE SUBTERRANEAN ENERGY SYSTEM
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United States of America Patent
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Aug 11, 2022
app pub date -
Jul 10, 2020
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Jul 19, 2019
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Abstract
A multi-mode subterranean energy system and a related multi-mode subterranean energy production method are disclosed. The system comprises subterranean tunnels (2, 3, 8, 9, 14) connecting an upper reservoir of water (1), an underground cavity (10) and a subterranean recipient (15), a turbine/pump unit (4), and water flow control means (5, 6, 7). The system optionally can be operated in four modes.
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