I remember a grey water system article in Mother Earth News where the heat was recovered from waste water , and used to flush the toilets. There was a system where heat was stored in barrels of water in the basement as well.
Perhaps someone has an index from Mother Earth and can find the articles. Heating by solar is quite common, where sunshine is available. Where I live we are very short of daylight hours in winter when we need the heat. Also there is the freezing problem when circulating water outdoors in winter. Some manufacturers claim to have all climate systems that work. I read about one such system at http://www.solarroofs.com/ They have an automatic shut down built in so when freezing happens, it drains the outdoor system. To have a system work here in the bitter cold north, you would have to run antifreeze and a heat exchanger to get any appreciable run time in winter. EdB ----- Original Message ----- From: Thor Skov To: biofuel@yahoogroups.com Sent: Sunday, March 23, 2003 5:23 PM Subject: [biofuel] A biofuels question (sort of) OK, I lied, this isn't about biofuels per se, but rather about home energy generation. I am rebuilding my house in Seattle, and want to go with passive solar heating supplemented with an efficient wood fireplace insert (see, biofuels!). My question is about solar water heating. I'd like to use solar panels and recaptured waste water heat to preheat water, store it in tanks, and then pipe it to electric on-demand heaters at the point of usage. Does anyone know of a design for such a system? I really know nothing about such a system, but am frantically trying to educate myself with whatever materials I can find. Any leads or suggestions would be greatly appreciated. Thor Skov __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com Yahoo! Groups Sponsor ADVERTISEMENT Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor ---------------------~--> Make Money Online Auctions! Make $500.00 or We Will Give You Thirty Dollars for Trying! http://us.click.yahoo.com/yMx78A/fNtFAA/46VHAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Biofuels list archives: http://archive.nnytech.net/ Please do NOT send Unsubscribe messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/