Question

type i - question # 12
what is the approximate pressure of a storage cylinder of recovered r - 134a that does not contain any non - condensable impurities and is stored in a room where the temperature is 80°f?
a 37 psig
b 87 psig
c 157 psig
d 207 psig

Explanation:

Step1: Use R - 134a pressure - temperature relationship

For R - 134a, we can refer to its pressure - temperature chart. When the temperature is 80°F, from the R - 134a pressure - temperature chart, the corresponding saturation pressure is approximately 87 psig.

Answer:

B. 87 psig