[Greenbuilding] Solar pre-heat system

[Donald Eyermann]

PEX (polyethylene crosslinked) tubing is questionable (to me) for a solar
hot water system because of temperatuere and pressure. Copper is probably
the most logical. Stainless would be best in my humble opinion. (Stainless
is used in our Geothermal underground duct for longevity) And Extruded Poly
Styrene is an excellent insulator IF the tubing doesn't get so hot that it
melts. The best wrap for a HOT tube is a woven ceramic fiber cloth blanket
such as in use in place of asbestos for big furnaces and industrial
applications. I don't think you can get it at ACE hardware, so right now,
I'd have to do a google search for a source. Their search site name has been
mentioned so much I think we ought to get a commission ! ! 

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Sacie
Lambertson
Sent: Friday, January 04, 2008 6:11 PM
To: Greenbuilding
Subject: [Greenbuilding] Solar pre-heat system

All, much as it is vaguely interesting to read the debate between two
listers about the viability of something else, I continue to be interested
in a good response to the question of the best material for moving glycol
from a solar heated panel ultimately to a water heater for the purpose of
preheating water.  Additionally, what is the best insulating material for
this tubing?    thanks,  Sacie
_______________________________________________
Greenbuilding email list
     Environmentally-preferable design, construction, building elements List
info:
http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
List email: Greenbuilding at listserv.repp.org Managed by BuildingGreen, Inc.
http://www.buildinggreen.com
      publisher of Environmental Building News and GreenSpec Hosted and
archived by REPP / CREST http://www.crest.org To get on the list:
  http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
  or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe
To get off the list:
  http://listserv.repp.org/mailman/listinfo/greenbuilding_listserv.repp.org
  or mailto:greenbuilding-request at listserv.repp.org?subject=unsubscribe