Put some heat on refrigerant switchover

Addressing the eventual R22 phase-out sooner rather than later makes sense.

By Andrew Sloley, contributing editor

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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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