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Well water to assist refrigerator cooling?

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Posted by RTrolll on May 26, 2004, 8:09 pm
Hi all,
How about a cooling jacket on the top and sides of the fridge?
I was curious if there might be a load reduction being that the ambiant would
lowered? the well water is 53F in this area. I will be running a solar powered
drawing say 230 watts @ 1.2 gpm . If useful how many gallons per minute/hour?
Would a closed loop be better? water column is about 450'  Would a ground loop
be better?  Use a timer to pump water every so often? Cover fridge water fall
with closed cell foam?  TIA  Ed

Posted by Ben Simons on May 27, 2004, 7:52 am

Cool idea. First, be sure your well is not too cold. Fridges are not
efficient at too low temperatures. There was a discussion lately here or
in alt.energy.xxxxxxxxx about fridges. Search this discussion. A lot of

I would do it the following way:
1. pump
2. wait till water took some heat
3. spill water (if you have too much of it)
4. pump new cold water
5. etc.,etc.

Another approach would be to sourround your fridge completely with water
(except the cooling devices of course. So you have a low outer temperature
for the fridge. But this is a lot of work.


Posted by daestrom on May 28, 2004, 2:21 pm

That's kind of a trade off thing though.  True, the vapor-compression cycle
suffers from a loss in efficiency.  But that would only be important if you
just cooled the cycle's condenser.  If you cool the whole exterior surface
of the fridge down to 53F, then the compressor would seldom run.  It would
be less efficient when it *did* run, but if it only comes on once a day, you
still come out ahead.

Of course, if your fridge runs a lot because the door seal is bad (or the
kids stand in front of it with the door open for 15 minutes at a time), then
the cooler exterior wouldn't cut down on compressor run time very much and
the loss of efficiency would start to hurt.


Posted by Ben Simons on May 31, 2004, 7:04 am
 Am Fri, 28 May 2004 14:21:45 GMT hat daestrom

Yes, that's right of course. I took this for granted. Thanks for the

Exactly, just cool the shell of the fridge.

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