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Thread: r409a or 134a?
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02-01-2003, 08:49 PM #1
r409a or 134a?
what would u pick? r409a or r134a...
I have one 1/4hp r12 compressor.
I want the best one for low temps.
I dont have any other ***** available
Im doing the same as this guy... (small evap. for cpu cooling)
http://www.refrigeration-engineer.co...=&threadid=843Last edited by AndrOvr; 02-01-2003 at 09:17 PM.
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21-01-2003, 06:15 AM #2
R-409a or R-134a
AndrOvr --
The first consideration is the type of oil used. If your system already has mineral oil or alkybenzene oil in it, you may want to stay with R-409a. It is quite suitable for lower temperatures. We have used it reliably in ice cream machines and walkin freezers. The R-409a will also work fine in systems with Polyol Esther oils.
I am not aware of any large number of people using R-134a for very low or low temperature applications. For that reason alone, I would stay away from it at those temperatures. If you are just looking at evaporator temperatures of -10ºC or so, the R-134a should be fine. Much below that would concern me because I am unfamiliar with use in that range.Bruce H. Robinson
bhrobin@anchor-robinson.com
company page: www.anchor-robinson.com
personal page: www.anchor-robinson.com/bruce01.html
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