System for exchanging heat within an environment using a coaxial-flow heat exchanging structure with helically-finned tubing
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United States of America Patent
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app pub date -
Mar 11, 2008
filing date -
Mar 9, 2005
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Abstract
An coaxial-flow-flow heat exchanging structure having a proximal end and a distal end for exchanging heat between a source of fluid at a first temperature and the environment (e.g. ground, water, slurry) at a second temperature. The coaxial-flow-flow heat exchanging structure comprises a thermally-conductive flowguide tube having a hollow conduit extending from said proximal end to said distal end. A helically-finned tubing is disposed within the hollow conduit of said thermally-conductive flowguide tube, and has a central conduit for conducting a heat exchanging fluid, from said proximal end, along the central conduit towards the distal end, and returning back to the proximal end along a spiral annular flow channel formed between the thermally-conductive flowguide tube and the helically-finned tubing.
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