UV Resistant Insulation for Hot Water Pipes [RE-wrenches]

[Kurt Albershardt]

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--On Saturday, May 06, 2006 9:51 PM -0400 Ken Schaal <ken at commonwealthsolar.com> wrote:
>
> Here in central VA possible temps of -10 to 105 , I've used drainback
> since 1979 very successfully. Tested performance of 700-800 BTU's per
> sq ft of collector [ single glazed, selective surface ]per day, annual
> average. Draw profile is a major influence on performance.
>
> Typical residential flow rates, tap water for fluid, is 1-2 gpm thru
> 1/2 " Kitec pipe, with copper for several feet on the inlet and about
> 6' on the outlet.


Has anyone tried Rehau Insulpex for SHW?  PEX tubing surrounded by polyurethane insulation and covered with an LDPE jacket.  They make it in larger diameters that are looking like a possible solution for a commercial project.

<http://www.rehau-na.com/construction/heating...plumbing/energy.transfer.piping..shtml>







.


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