The specific enthalpies of a refrigerant in a vapour compression
refrigeration cycle are Entrance of
evaporator = 100 kJ/kg, exit of evaporator = 1200 kJ/kg, entrance of condenser
= 1300 kJ/kg. Its coefficient of performance (COP) is :
वाष्प संपीड़न प्रशीतन चक्र में रेफ्रिजरेंट की विशिष्ट एन्थैल्पी हैं बाष्पीकरणकर्ता का प्रवेश = 100 kJ/kg, बाष्पीकरणकर्ता का निकास = 1200 kJ/kg, कंडेनसर का प्रवेश द्वार = 1300 kJ/kg। इसका प्रदर्शन गुणांक (सीओपी) है:
12
10.56
9.24
11
11
Given :
Specific
enthalpy at entrance of evaporator
Specific
enthalpy at exit of evaporator 
Specific
enthalpy at entrance of condenser 
Process 1–2:
Compression
Process 2–3:
Condensation
Process 3–4:
Expansion
Process 4–1: Evaporation
Coefficient of performance (COP)
&Key Points:-
Hence, the
correct option is (D). Preparing students for success in a changing World.
We care about our students
RPSC-AE, RSMSSB-JE, SSC-JE, RRB-JE, PSU's