Question

Problem 2: Consider a vapor compression cycle uses ammonia as a refrigerant and follows the theoretical single-stage cycle. The condensing temperature is 100 F and the evaporating temperature is 0 F What is the low and high pressures in the cycle? Plot all points entering and exiting cach of the evaporator, compressor, condenser, and expansion valve on a P-h diagram and submitted with you work. Determine the enthalpy of the refrigerant leaving the compressor. Detemine the enthalpy of the refrigerant entering the evaporator. What is the work done by the compressor in "hp" per for 3 tons refrigerant a) b) c) d) c)

Answer 1

Statt) 3 6oo >681 34- 224.3 wiy - 18. 81 1887x 80 6.S6 681 -34) @ f=21 201 fs ια f= 9821.9 3.8798 hp 2544.41 3 EV Lour ht