I'm in a rush at the moment, so just a brief note...
Quote:
Originally Posted by jlaw
...I am thinking about the sall stream running on the back edge of my yard, a meer 110 feet away...
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This sounds like a very interesting idea. It is kind of a hybrid between ground source and water source.
The principle is sound. I think your problem will be to determine the amount of coil (probably PEX or HDPE) you will require in the bed of the stream.
You'll likely need less than is required for GSHP but more than is required for pond loops, if you have running water, it is possible that even less than what is required for pond loops would be required.
If you bury your pipe even a foot, you won't need anti-freeze. The fish in the stream will be glad to hear that.
-AC