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Re: GBlist: Re: Greywater
Craig said,
"Maybe a simpler heat exchanger would work. A simple 55 gallon drum "bulge"
in a greywater drain line, with interior loops of copper supply pipe would
certainly warm up some incoming cold water, and help with the flow
synchronization problem.
Am I ignorant? Is this kind of thing already being done? In my part of the
world we don't have domestic water worries, yet. (Lets not discuss the new
waste treatment plant proposed for down the road that will double my water
bills, because "I" like to use water once and throw it away.)
Greywater use ought to be a national issue.
Craig DeWitt
SC Energy R&D Center"
Hi,
I experiemented with reclaiming heat from grey water years ago. Tried a
coil-in-a-drum. The drum turned into a sedimentation chamber. I mean a
septic sedimentation chamber. At the time I was thinking I needed thermal
storage. After watching the flows though I realized that most of the time,
when a water tap opens, water goes down the drain. Baths tubs, sinks and
buckets are the main exceptions. And they are generally in use for 5 to 20
minutes. So a coil wrapped around the wastewater line is a pretty good match
to the schedule, and also has a fair amount of mass in the coil. Leave the
greywater line alone. The device mentioned in an earlier post appears to
solve the problems I had along these lines. I recnetly saw one at Affordable
Comfort and it looked good to me. I'll try it if I get a chance. -Terry
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