is Pex-Al-pex suitable double wall heat exchanger?

 Actually 3 walls?  Would this work in place of double wall heat
exchanger?

Eric

  AstickfortheMULE wrote:

Hi Eric,
Oddly, I JUST finished order 1600 ft of the stuff from PexSupply for our floor.

I had the same thought about whether it would satisfy requirements where a
double wall heat exchanger is needed.
I would guess not, because they want any leak that gets through the first wall
to be detectable.  I gather this is so you can fix it before it gets through the
2nd wall.

But, it does seem like it would offer some extra protection, in that there are
three separate layers.
You would have to live with the fairly low thermal conductivity -- not so good
for a heat exchanger.

Gary


--


Gary

www.BuildItSolar.com
gary@BuildItSolar.com
"Build It Yourself" Solar Projects









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No. A double-wall heat exchanger involves two walls and a space in
between them. If either side that is supposed to have fluid leaks, the
dripping from the intervening space is supposed to alert you to a
problem, and even if both sides are leaking, the fact that the space is
not pressurized should still mean that no fluid from either system is
able to pass into the other system.

Pex-Al-Pex is just a single wall tubing, from that point of view. No
matter how many layers the wall is made up of, it's one wall.

--
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