Consider a carnot cycle executed in a closed system with 0.0058 kg of air. the temperature limits of the cycle are300 k and 940 k, and the minimum and maximum pressures that occur during the cycle are20 kpa and 2,000 kpa. assuming constant specific heats, determine the net work output per cycle.

Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.