Geo-thermal heat exchanging system facilitating the transfer of heat energy using coaxial-flow heat exchanging structures installed in the earth for introducing turbulence into the flow of the aqueous-based heat transfer fluid flowing along the outer flow channel
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United States of America Patent
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May 20, 2008
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N/A
app pub date -
Jun 27, 2006
filing date -
Mar 9, 2005
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Abstract
A geothermal heat exchanging system including a heat exchanging subsystem installed above the surface of Earth, and one or more coaxial-flow heat exchanging structures installed in the Earth. The coaxial-flow heat exchanging structures installed in the Earth, facilitate the transfer of heat energy in the aqueous-based heat transfer fluid, between the aqueous-based heat transfer fluid and material beneath the surface of the Earth. Each coaxial-flow heat exchanging structure includes an inner tube section, a thermally conductive outer tube section, and outer flow channel between the inner tube section and the outer tube section. A turbulence generating structure is disposed along a portion of the length of the outer flow channel so as to introduce turbulence into the flow of 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 the Earth along the length of the outer flow channel.
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