R134a is used as a working fluid in a cooling system with a cooling capacity of 50 kJ/s operating according to the ideal vapor compression refrigeration cycle. The refrigerant enters the compressor as saturated steam at a pressure of 120 kPa and is compressed to a pressure of 650 kPa. The mass flow of R-134a is 0.10 kg/s. Calculate the efficiency coefficient of the cycle.
R134a is used as a working fluid in a cooling system with a cooling capacity of 50 kJ/s operating according to the ideal vapor compression refrigeration cycle. The refrigerant enters the compressor as saturated steam at a pressure of 120 kPa and is compressed to a pressure of 650 kPa. The mass flow of R-134a is 0.10 kg/s. Calculate the efficiency coefficient of the cycle.
A-6,896
B-4.359
C-5.417
D-5.668
E-4.987
(Note: This question is Turkish) orginal question:
İdeal buhar sıkıştırmalı soğutma çevrimine göre çalışan soğutma kapasitesi 50 kJ/s olan bir soğutma sisteminde iş akışkanı olarak R134a kullanılmaktadır. Soğutucu akışkan kompresöre 120 kPa basınçta doymuş buhar olarak girmekte ve 650 kPa basınca sıkıştırılmaktadır. R-134a’nın kütlesi debisi 0.10 kg/s’dir. Çevrimin etkinlik katsayısını hesaplayınız.
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