|
Posted by: King Rice on 2010-06-25, 00:03:46
1st counter Q is: What kind of SWH are you envisioning: Space heating? Swimming pool? floor heating? or are you trying to generate hot water for showers and other human-contact/ human-consumption purposes? The reason for all the counter-Q's: building a DIY non-potable SWH system is much easier than a clean drinking-water-quality system. That said, I think this might be the cheapest: iwilltry.org/ b/ projects/ build-a-simple-solar-water-heater/ or this thesietch.org/ projects/ solarthermalpanel/ index.htm |