Hi Rod,

I have no personal experience with this, but it sounds an awful lot like
something that my university (Cornell University) is building right now to
reduce it's summer cooling bill. Cornell is only about a mile away from the
(IIRC) second largest of New York's finger lakes, Lake Cayuga. Much of
Cornell's air conditioning is already done by chilled water, currently
generated by several centralized electric powered water chiller facilities
on campus. They are installing heat exchangers at the bottom of the lake
(which is very deep, something like 400 to 700 feet, IIRC) and going to use
the lake to chill their water instead of the electric facilities. They call
it the "Lake Source Cooling Project".

So, at least it sounds like your idea is sound enough for someone to dump
millions into a larger version of it!

Sean

At 10:47 AM 4/7/02 -0500, you wrote:
>Hello to all,
>
>Here's an idea that I wanted to run past whoever is interested.
>
>I have 2 unused water wells on my property that are seperated by 100 feet.
>One well has a 30 inch diameter concrete casing and is 36 feet deep.  The
>other well has an 18 inch diameter casing and is about 25 feet in depth.
>
>My idea is to pump water from well # 1 into a small, insulated pressure
>tank.  At the tank outlet would be a solenoid valve to let the water flow
>into some sort of heat exchanger in the furnace plenum.  Another valve would
>be located on the other side of the heat exchanger to discharge the warmed
>water into the second well.  The plan would be to monitor air temperature in
>the plenum and when it has reached a certain limit open both valves to force
>the warmed water out.  Additional temperature probes in the input and output
>lines could be used to determine when the exchanger is full of cold water.
>I have a probe in well # 1 now and the water temperature is 51 degrees.
>
>I would welcome any comments or experiences anyone has had along these
>lines.
>
>                                    Rod
>
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