On Sun, Jun 29, 2014 at 10:15:26PM +0800, Justin Richards wrote: > Curiosity regarding ground heat pumps got the better of me and now > after a little research have concluded that I should have built the > house underground rather than trying to exchange heat with the > underground. Hear hear. Being underground is the next step in any case. ;-) I'm thinking of hiring a guy with a large bulldozer to dig a long narrow trench, then buying a large shipping container. Inside, mount several structures shaped like heat sinks. Then fan the house air through that container. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .