Question

5. A refrigerator uses refrigerant-134a as the working fluid and follows the ideal vapor-compression refrigeration cycle. The refrigerant enters the evaporator at 140 kPa with a quality of 20 percent and leaves the evaporator as saturated vapor. The refrigerant leaves the compressor and enters the condenser at 80° C and 600 KPa. The refrigerant leaves the condenser at 600 Kpa. Determine: (a) Refrigerant flow rare (b) The amount of power required to service a 200 kW cooling load. (c) The system's COP (c) second law efficiency of the refrigerator (a) Show the process on the T-S diagram $T_1 = -18.77^\circ C$ $h_2 @ 600 kPa, 80^\circ C = 319.57$ At 140 kPa, $h_r = 27.02$, $h_{fg} = 212.13$ $h_1 @ 140 kPa = 239.19$ Assume $h_3 = h_4$ Problem 5

          5. A refrigerator uses refrigerant-134a as the working fluid and follows the ideal vapor-compression refrigeration cycle. The refrigerant enters the evaporator at 140 kPa with a quality of 20 percent and leaves the evaporator as saturated vapor. The refrigerant leaves the compressor and enters the condenser at 80° C and 600 KPa. The refrigerant leaves the condenser at 600 Kpa. Determine:
(a) Refrigerant flow rare
(b) The amount of power required to service a 200 kW cooling load.
(c) The system's COP
(c) second law efficiency of the refrigerator
(a) Show the process on the T-S diagram
$T_1 = -18.77^\circ C$
$h_2 @ 600 kPa, 80^\circ C = 319.57$
At 140 kPa, $h_r = 27.02$, $h_{fg} = 212.13$
$h_1 @ 140 kPa = 239.19$
Assume $h_3 = h_4$
Problem 5

5 a refrigerator uses refrigerant 134a as the working fluid and follows the ideal vapor compression refrigeration cycle the refrigerant enters the evaporator at 140 kpa with a quality of 20 47902

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