Method of transferring heat energy between a heat exchanging subsystem above the surface of the earth and material therebeneath using a coaxial-flow heat exchanging structure generating turbulence along the outer flow channel thereof
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Oct 31, 2007
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Mar 9, 2005
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Abstract
A method of transferring heat energy between a heat exchanging subsystem installed above the surface of the Earth, and material beneath the surface of the Earth, by installing one or more coaxial-flow heat exchanging structures in the material beneath the surface of the Earth. Each coaxial-flow heat exchanging structure has inner and out flow channels along which aqueous-based heat transfer fluid is circulated. Turbulence is generated in the aqueous-based heat transfer fluid flowing along the outer flow channel, thereby improving the transfer of heat energy between the aqueous-based heat transfer fluid and material beneath the surface of the Earth along the length of the outer flow channel.
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