Quote:
Originally Posted by Ormston
Anyone know of a source for brazed plate heat exchangers that are rated at high pressures? The air conditioner i've started dismantling uses R410A and looking at the rating plate i need a heat exchanger rated at 36 Bar working pressure. after searching ebay etc. the best i can find are from Germany rated at 30 Bar.
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That is one of the big advantages of lower-pressure refrigerants.
You could build a tube-in-tube, similar to what randen did.
Otherwise, I took a look at some high-pressure brazed plate HXs... can't remember the company at the moment, but it appeared to be not very different from a regular BPHX, with the exception that thick metal plates, top & bottom, were bolted around the edges of the HX to contain plate bulging. The top & bottom plates looked to be maybe 3/16" thick.
How easy could that be?
-AC