An ideal gas refrigeration cycle using air as a working medium maintains a refrigerated space at -18∘C while rejecting heat to the surrounding medium at 27∘C. If the pressure ratio is 4 and the ou__________.
a) outlet temperature of the compressor is 15°C
b) outlet temperature of the compressor is 60°F
c) outlet temperature of the compressor is 270 K
d) outlet temperature of the compressor is 300 K