An Ideal Gas Refrigeration Cycle Using Air as the Working

Multiple Choice

An ideal gas refrigeration cycle using air as the working fluid operates between the pressure limits of 80 kPa and 240 kPa. Air is cooled to 40°C before entering the turbine. The lowest temperature of this cycle is

A) -44°C
B) 29°C
C) 40°C
D) -205°C
E) -71°C