Transcription of GROUND-SOURCE (GEOTHERMAL) HEAT PUMPS
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GROUND-SOURCE (GEOTHERMAL) HEAT PUMPS
GROUND-SOURCE ( geothermal ) heat PUMPS by John W. LUND 1. INTRODUCTION When a geothermal resource temperature falls below the 40-50 C range, it is frequently impractical to use the fluid directly for most applications. A heat pump can be used to transfer heat from a low-temperature resource to that of a high-temperature reservoir, thus providing the higher temperature needed for space heating. The process can also be reversed by removing heat from a high-temperature resource and rejecting it to a lower temperature reservoir, thus providing cooling to a space.
tubing and heat is released to or absorbed from the ground. No water enters the system from the ... water is a problem, where drilling and casing of wells are expensive, or where disposal of well water is restricted. In the horizontal mode of the ground-coupled system, pipes are buried in trenches spaced ...
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