Frank,
Just an idea. I know you want to run the system even when the water
is off, but you could design the system to momentarily pressurize as
long as the apex valve is open, then turn off.
Bob
At 08:01 PM 9/19/2012, you wrote:
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. Pretty hard to do without some type of pump.
Bob
At 05:24 PM 9/19/2012, you wrote:
Frank,
How about just using black hose running in a back and forth
direction from the bottom of your roof 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 your house into the
hot water container in your basement. When the water at the apex of
your roof attains a pre-selected temperature the valve opens and
lets waterenter the system from the low point of your roof pushing
the water into the container in the basement, until the temperature
at the apex lowers to a predetermined temperature and shuts off. Repeat.
Bob
snip
Thanks Bob. The problem is that cold water must then be lifted to
the roof from the basement. It takes lift to get it to go up.
