Hi am currently a student of an HVAC program and I have to do a report on the basics of geothermal heat pumps. I understand the general idea but I am a little confused about some of the details about how they work. I have been poking around on the internet and have found very limited info so I was wondering if anyone could point me towards some good sources.
Also, since I live in Phoenix, I am wondering if this is a good option here. Our ground water is pretty deep because it is a desert, and our cooling load in the summer is pretty enormous. Do you need ground water or moisture for them to work? I read somewhere that the heat builds up in the soil to some extent and with the combination of dry soil and lots of heat to remove, it seems like this might cause a problem. Any help is much appreciated.