Tempering well water temperature with heat exchanger

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Jan 20, 2013
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Because the cold water coming into my drafty historic home from the drilled well is so cold there is condensation on the copper cold water pipes to the extent that dripping damages ceilings; condensation on toilets rots out floors.
We cook on a woodstove that has a heat exchanger. We heat with wood.
I wonder if the best way to temper incoming water temperature wouldn't be to use a boilermate sort of tank, the coil inside of which is heated by the cook stove or boiler, to heat the incoming water just enough to eliminate the condensation.
Does anyone have a better way of addressing the issue?
 
Insulate the pipes?

My cold pipes do that sometimes - but only on the most humid of summer days when a lot of water is being used, like multiple loads of laundry. I just havent gotten around to insulating them.
 
I'd have to rip out ceilings and that wouldn't address the toilet condensation. An approach often used is to install a tempering valve that admits some hot water into the cold line, but since we have hot water only when we make a fire in the cook stove, this solution wouldn't work. Other ideas?
 
The only options for sweating pipes are to either insulate them or as you suggested, temper the water. That's about it.

If insulating is out of the question then the only option is tempering somehow. The ways to do that are limited only by your imagination and budget.

I've either seen it or have done it in a few of these ways.

*Use a water heater with the temperature set very low. Gas or electric.
*Fab up some kind of solar preheat for the incoming water
* Install a very large storage tank that allows the incoming water temp to rise a bit before it hits the piping.
*Install a tempering valve with heated water sourced from ????? about anything you can think of really.

In your case, realizing that you have heat provided with wood intermittently, maybe you could tap into that and heat a separate tank of water that could be blended in with the cold water during times when the wood fire is out. Storage is a wonderful thing in so many ways......:cool:
 
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