Posted by John on January 5, 2006, 4:45 am
Probably a silly question, but if I am building a closed loop, active
system, do I want to have a large "glycol" tank for storage and heat the
potable water as it is needed, vise versa, or some combination there of?
I still intend to keep the electric water heater in the house and
feed the solar preheated water into it.
My solar heating equipment will be far removed from the main household
electric water heater. Presumably, when the temperature of the solar
heated water is sufficiently greater than the main household electric
water heater, the solar heated water should be circulated through the
household electric water heater to prevent the electric heaters from
As much free sunshine as we get down here in Dallas, Texas USA, you
would expect to have more Solar oriented businesses than Seattle has
Starbucks... but I'm not having a lot of luck finding 'em. Do you guys
have any favorite online solar thermal equipment vendors or know of a
business in my area. I am trying to find out about double wall heat
exchangers and food grade freezing point depressants.
Posted by nicksanspam on January 5, 2006, 5:52 am
How about an unpressurized storage tank with a non-glycol draindown
collectors just above the tank and a $0 1"x300' PE pipe coil to
preheat water for your conventional water heater?
Grainger and Home Depot have lots of useful stuff. You might also check
out greenhouse and roofing suppliers and Duane Johnson's web site.
Posted by skijoring on January 6, 2006, 2:42 am
My system will be a large closed loop active system used to heat my
house and hot water.
I bought a large 600 liter tank for water heating right from the
manufacturer. The lower coil will be used to heat potable water in the
tank. The upper coil will be used to heat a hot tub.