I have only seen boiled glycol turn to a cola like syrup that had to be purged and removed.
What kind of system & glycol is this? Where would you expand that much? Can you provide a link to this paper? We use heat dumps. Dana Orzel Great Solar Works, Inc www.solarwork.com E - d...@solarwork.com V - 970.626.5253 F - 970.626.4140 C - 970.209.4076 "I'd put my money on solar energy. I hope we don't have to wait 'til oil and coal run out before we tackle that." -Thomas Edison, in conversation with Henry Ford and Harvey Firestone, March 1931 -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Troy Harvey Sent: Thursday, April 23, 2009 10:43 AM To: RE-wrenches Subject: [RE-wrenches] Solar Combi-systems: Heat dump or Stagnate? I'm wondering how many of you out there have installed medium sized solar hot water systems (6-8 panel) that were designed to stagnate during summertime over production as opposed to diverting to a heat dump or radiator? The International solar agency has a couple of papers that show a properly designed system should be able to stagnate in a way that the boiling glycol mix vapors in the panels, purge the panels of fluid, turning off the system without degrading the glycol. That doesn't seem to be a typical way to design systems in the U.S. , we've usually gone to a heat dump. Does anyone have experience with this? Troy Harvey --------------------- Heliocentric 801-453-9434 tahar...@heliocentric.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
