Put some heat on refrigerant switchover
Addressing the eventual R22 phase-out sooner rather than later makes sense.
44.1
42.7
42.4
Saturated temperature
at 0 psig, ºF
-41.4
-28.0
-43.7
-51.8
-53.5
Saturated pressure
at -40ºF, psig
0.6
-4.3
1.4
4.8
5.7
Condensation pressure at 100ºF, psig
196.0
196.7
175.0
205.5
213.0
Condensation pressure
at 68°F, psig
117.3
109.3
106.9
127.7
127.7
Compared to an R22 system at fixed duty.
Operation at -40ºF evaporation and 68ºF condensation
Power required*
1.000
0.982
1.040
1.024
0.998
Suction volume*
1.000
1.120
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