View Full Version : faq!r404a+r1150 in the first stege
it is possible to use r1150+404a on the first one stage in a cascade where also the 2°stage will be loaded with l r1150? :)
sharp
05-21-2005, 11:24 AM
Critical point for R1150 is 9c,after that temperature can not be condensed.You will rise only head pressure,there will be no lower boiling point as you think.
therefore second you one small percentage of r1150 allows to have low temperatures?
berkut
05-21-2005, 11:32 PM
in some very special conditions - yes, there is a *chance* you will get slightly lower temps, take Ron's cascade for example.
ok thanks to all I will try
Tyrou
05-22-2005, 01:40 AM
maybe with a suction line HX, you can condense it a bit, and then slightly lower your evap's temp :)
I was believed to make 80%404 and 20% r1150....
be very care full, could be making a bomb if done wrong.
just keep a real close eye on high side pressure.
you will need to do some nice subcooling configeration to help out in condensing it.