Half a croissant, on a plate, with a sign in front of it saying '50c'
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Pool Heat Sink

 Uses the pool water to cool the house.
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There must be a simple way to use a heat pump to heat a small pool and simultaneously cool the house. Why waste that house heat to the outside air? Using a standard compression/expansion refrigeration cycle, dump the heat into the pool first. While I doubt that the house heat will supply enough BTU's to do the job alone, it seems overkill to pay to heat the one and cool the other.
—RayfordSteele, May 11 2002

Done http://www.toad.net/~jsmeenen/pool.html
[half, May 11 2002, last modified Oct 21 2004]

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       I knew this was too obvious to not be baked somewhere, just couldn't locate it.
—RayfordSteele, May 11 2002
   

       [RayfordSteele], this was one that you almost had to know existed in order to be able to find it. Some other interesting stuff is being done with "ground-coupled" heat pump systems that take advantage of constant underground temperatures for efficient heating and cooling by directly burying the condensing coil in the ground.
—half, May 11 2002
   

       Heat pumps for hot water are being marketed, check the DOE site. Also, heat pumps using the ground for a heat sink are marketed. I would imagine there are problems with heat balance problems with using a pool for a heat sink for a house. One being, during the winter, you'd be pulling heat out of the pool to warm the house. In Southern California, that wouldn't be a problem. In the northren states, you'd end up with a ice problem.
—blane69, Jul 24 2003
   

       This was the sort of scheme I was thinking could be used to cool the London Underground. I will link it.
—bungston, Jul 24 2003
   


 

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