I live in the city with gas hot water. Its not for me but its for an isolated cabin. It has a pressurized system, however, I want to transfer hot water to the tank even when the water is off.
I think the loop idea may work. It will only transfer a fraction of its flow rate to the tank and many have enough reserve lift to carry the cold water up. It is getting a little late in the season to try it out. -----Original Message----- From: Robert Dorr <rod...@comcast.net> To: vortex-l <vortex-l@eskimo.com> Sent: Wed, Sep 19, 2012 8:33 pm Subject: Re: [Vo]:question about passive solar heat Frank; I made the assumption you are on a city type pressurized water system,therefore no need to lift to roof. If your not, I see the dilemma. Prettyhard to do without some type of pump. Bob At 05:24 PM 9/19/2012, you wrote: Frank, How about just usingblack hose running in a back and forth direction from the bottom of yourroof to its apex, with a temperature sensitive valve at the apex point,and a black hose, from the apex, running down the sunny side of yourhouse into the hot water container in your basement. When the water atthe apex of your roof attains a pre-selected temperature the valve opensand lets waterenter the system from the low point of your roof pushingthe water into the container in the basement, until the temperature atthe apex lowers to a predetermined temperature and shuts off.Repeat. Bob snip Thanks Bob. The problem is that cold water must then be lifted tothe roof from the basement. It takes lift to get it to goup.
