Quote:
Originally Posted by marx290
Has anyone in the Ecorenovator world seen a residential HPWH that recovers energy from a home's waste water stream? It always seemed to me, that the time a water heater "calls for heat", is likely when the warmest water is draining from the home.
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Marx,
Years ago I talked with a guy who designed and sold waste recovery systems. I would have employed it but like ctgottapee said you need a decent drop which I didn't have. If you have a second floor shower and a clear path to the waste pipe it's not to hard to build one if your wife and kids don't mind you chopping out a bunch of sheetrock through the kitchen to make a path. Basically you wrap the incoming water copper tube around a 2 to 3" copper pipe (I guess you could use aluminum) and the capillary action that causes to waste water to cling to the inside perimeter of the larger pipe gets recovered... If you've never wrapped copper pipe around larger pipe you're in for a whole new experience though!
AC,
Great Fracking post, one of the reasons I love this site!
Rob