Refrigerant-134a enters a compressor as a saturated vapor at 160 kpa at a rate of 0.03 m3/s and leaves at 800 kpa. the power input to the compressor is 10 kw. if the surroundings at 20°c experience an entropy increase of 0.008 kw/k, determine (a) the rate of heat loss from the compressor, (b) the exit temperature of the refrigerant, and (c) the rate of entropy generation.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature