Quote:
Originally Posted by BeerGrylls
...My R410a ASHP says it works up to 4.2Mpa, which translates to around 610 psi. Not sure what to do...
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BeerGrylls,
I did some serious research, and from the best I could determine, KOAX was last really viable around 2004-2005. So no information will come from them.
Then I looked for similar products that I could use for comparison.
I went to
THIS_PAGE and saw a table of Coaxial Helical HXs that were of similar dimension. I then did a linear regression of the data in table and made a very rough extrapolated estimate of the capacity of the HX I have in the photo.
Turns out that it's capacity will fall far short of your needs, as it will only handle about 3470 BTU/hr which would be about 1 kWatt, if I have my conversion correct.
So I'm afraid that the pressure issue is of no consequence now.
Sorry I didn't work it out before I bought the HX, and I am glad I worked this out before the HX went to Austria. I wouldn't want to let you down.
I might still find a use for them in a very small application... maybe a de-superheater or something.
Sorry I couldn't be of more help.
Best,
-AC