Question

Refrigerant-134a is compressed from 2 bar, saturated vapor, to 10 bar, 90o C in a compressor operating at steady state. The mass flow rate of refrigerant entering the compressor is 7 kg/min, and the power input is 10.85 kW. Kinetic and potential energy effects can be neglected. a) Determine the rate of heat transfer (kW). b) If the heat transfer occurs at an average compressor surface temperature of 50o C, determine the rate of entropy production (kW/K). c) Determine the rate of entropy production (kW/K), for an enlarged

Answer 1

Answer:

Find attach the solution

Explanation:

Entropy production is almost the same in (b) and (c) as $T_{avg}$ ~ $T_{surroundings}$