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View Full Version : Best refrigerator..R404a or R507a

AndrOvr
25-06-2003, 07:09 PM
What would u pick for a R134a based compressor - danfoss NL11F for the lowest temp possible w a heat load around 180w.
Gary
25-06-2003, 07:52 PM
Helium. :D
herefishy
25-06-2003, 08:12 PM
ROFLMAO !!!!!!!!
AndrOvr
25-06-2003, 08:54 PM
Originally posted by Gary
Helium. :D

LOL!
Ok.. seriusly.. what's the best, r404a or r507a?
herefishy
25-06-2003, 08:59 PM
Hi AndrOvr,

I presume you're voiding the warranty on your Prommie. I have good experiences with putting R-404A 'em. Never tried R-507A.
AndrOvr
25-06-2003, 09:02 PM
R404a as a boiling point of -46.6c and R507a as -47.1 I think... Now, as far as thermal conductivity, dont know whitch one is the best :P
DaBit
26-06-2003, 01:22 PM
According to a AC/R engineer who has tried both in a Prommie, R507 gives you slightly lower temps than R404a.
superheat
08-07-2003, 03:51 PM
Long time ago, I put 502 into a R12 compressor. It did not last the night.

They must be making those 134a compressors tough these days.
AndrOvr
08-07-2003, 03:53 PM
R22 in a r12 compressor... it will last?
LOL
or the compressor will fail?
Gary
08-07-2003, 05:44 PM
When you put a high pressure refrigerant in a compressor that is designed for low pressure refrigerant, you take your chances. Maybe it will last, and maybe it won't.