[Greenbuilding] [BULK] Re: Al Pex for Solar Heating System

[Keith Winston]

Nope, I'm not a big radiator person. It would be tricky in that you're 
mixing metals/galvanic problems. I'd be cautious.

Keith


Lawrence Lile wrote:
> Kieth, I think I remember you being the one using radiators for air heat
> exchange, how would they work for water heat exchange?  Stick one in a
> big EPDM lined plywood tank, run the glycol loop through that and your
> collectors?  It OUGHT to work.
>
> 10' square EPDM can be bought for $46 from here: 
>
> http://www.flatroofsolutions.com/index.php
>
> Enough for a 3 foot cube tank, about 194 gallons
>
> Lawrence Lile, PE, LEED AP
> Project Solutions Engineering
>
> -----Original Message-----
> From: greenbuilding-bounces at listserv.repp.org
> [mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Keith
> Winston
> Sent: Sunday, January 06, 2008 1:37 PM
> To: Bob Korves
> Cc: greenbuilding at listserv.repp.org
> Subject: [BULK] Re: [Greenbuilding] Al Pex for Solar Heating System
> Importance: Low
>
> One challenge one runs into with radiator and other unusual (from a 
> house plumbing point of view) hoses is pressure: as long as you keep 
> your system at heating-system pressure (i.e. 12 psi or so) they can 
> work, many of them can't take higher pressures when they are hot I 
> believe (isn't a car pressure relief around 12-15 psi?). On a 
> multi-story install that might be hard for the full height of the 
> system, though using them just at the top might be made to work... I got
>
> some special high-temp plastic hose from US Plastics for one stretch, it
>
> was a bit pricey (I think $3/ft). Thanks for the link to Gates, I don't 
> know them yet.
>
>