Sub-surface tubing spacer means for direct expansion heating/cooling systems
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United States of America Patent
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Nov 30, 2010
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app pub date -
May 19, 2004
filing date -
May 19, 2003
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Abstract
A direct expansion geothermal heat exchange system with spacer fins attached to at least one of a sub-surface refrigerant transport tubing containment pipe and to sub-surface refrigerant transport tubing, so as to ensure the sub-surface pipe/tubing does not come into direct contact with the ground and is surrounded/encased by a thermally conductive grout that is resistant to corrosive sub-surface elements.
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