Dual pressure geothermal system
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United States of America Patent
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Aug 2, 2005
Issued Date -
N/A
app pub date -
May 11, 2004
filing date -
Dec 16, 2002
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Expired
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Abstract
A new thermodynamic cycle is disclosed for converting energy from a low temperature stream from an external source into useable energy using a working fluid comprising of a mixture of a low boiling component and a higher boiling component and including a higher pressure circuit and a lower pressure circuit. The cycle is designed to improve the efficiency of the energy extraction process by mixing the liquid stream from the high pressure circuit with the spent low pressure circuit stream forming a lean system that can be condensed at a low pressure. The new thermodynamic process and the system for accomplishing it are especially well-suited for streams from low-temperature geothermal sources.
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