Apropos of which, my contractor tells me that geothermal heating/
cooling systems (using shallow trenches at 57F and a delta-T heat-
pump to surface temperatures) work great.
Perhaps that's what Paul's guests had in mind. Although I still
don't know what happens when the surface ambient is 57F...
db
dba | David Breecker Associates, Inc.
Santa Fe: 505-690-2335
Abiquiu: 505-685-4891
www.BreeckerAssociates.com
On Dec 26, 2007, at 5:47 PM, Stephen Guerin wrote:
If you put a heater in one corner of the room and a cooler in an
opposite corner, this second system would have free energy and a
device could be
introduced to extract work from it.
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