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Posted by Ecnerwal on August 14, 2006, 1:18 pm

In that case, no water is flowing in the hot pipe, so the hot pipe is
cooled to cold water temperature in short order, and the cold water
remains unheated as it runs to the shower. Not a problem, unless you
want it colder than your water supply is.

Cats, coffee, chocolate...vices to live by

Posted by Solar Flare on August 14, 2006, 11:47 pm
Run that sucker in reverse for colder water.

Posted by daestrom on August 15, 2006, 1:16 am

Much like the hottest temperature you can get is still limited to the
hot-water heater setting, when no cold water flows, you quickly get to just
'full hot' temperature.


Posted by nicksanspam on August 16, 2006, 1:19 pm

Gary's solution seems nice, altho I can imagine cheaper solutions. I just
got back from the Tioga County PA Fair, where an outdoor woodstove vendor
had 4" pipe with 2 foamed-in place tubes for about $/ft and some shaped
foam inserts to accomplish something like that for about $/ft.

But would a single bare garden hose or PVC pipe with bidirectional flow
work better, esp if it's empty when no heat is needed?


Posted by Gary on August 12, 2006, 3:08 am
 Randy wrote:

Hi Randy,

This is how I insulated my underground pipe run -- costs about $.50 per ft,
easy and water resistant.  The insulation material is the extruded polystyrene
(pink stuff) -- it has a well established track record for underground
insulation, and absorbs very little water.
I placed mine with some gravel around it to allow any moisture to drain away
from the pipe.




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