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GBlist: site-built storage & counter-flow greywater HE


Further to the notes of below, we have both a barrel type storage GWHE (using
poly B, not copper as indicated below) and a counter-flow type.The former
has the exhaust of the dryer/washing machine combination integrated before exit.
We have had a technical problem with the inner liner of the barrel type,
which would work for several months at a time before it sprang a slow leak. 
Perhaps it was water migration through the "pin holes" in poly? The
counter-flow GWHE has worked without any problems so far. Although
thermocouples and water meters have  been installed at several locations, no
testing has been completed so far.

Does anyone know of a waterproof liner other than Tu-tuff (to be tried
next) that may work in this application?
_________________________________________________________
Jorg Ostrowski,  M. Arch. A.S. (MIT), B. Arch. (Toronto), Ecotect 
-  in full-time professional practice since 1976 (Straw Bale since 1978),    
   environmental/architectural design, ecological planning,  consulting   
   on sustainable  buildings/communities. Lectures, seminars, workshops.
   3 demonstration projects in Canada, +80,000 visitors
 - living a conserver lifestyle & working in a sustainable home and office
ACE, ARE, ACT, ASH-Incs., Phone: (403) 239-1882, Fax: (403) 547-2671
Web Site [under construction]: http://www.ucalgary.ca/~jdo/ecotecture.htm
______________________________________________________


 On Sat, 24 May 1997 TBren46501@aol.com
wrote:

> 
> 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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> 

__________________________________________________________________
This greenbuilding dialogue is sponsored by Oikos (www.oikos.com)
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send e-mail to greenbuilding-request@crest.org.
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