Q1/A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor- compression refrigeration cycle between 0.14 and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05...

Q1/A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor- compression refrigeration cycle between 0.14 and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05 kg/s. determine (a) the rate of heat removal from the refrigerated space and the power input to the compressor. (b) the rate of heat rejection to the environment. and (¢) the COP of the refrigerator. P;=0.14 MPa — hv=239.19 kl/kg 5=0.94467 kI P,=0.8 MPa — hL=275.40 ki/kg P3=0.8 MPa — h=95.48 kl/kg


Extracted text: Q1/A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor- compression refrigeration cycle between 0.14 and 0.8 MPa. If the mass flow rate of the refrigerant is 0.05 kg/s, detenmine (a) the rate of heat removal from the refiigerated space and the power input to the compressor, (b) the rate of heat rejection to the environment, and (c) the COP of the refrigerator. P1 = 0.14 MPa → hv= 239.19 kJ/kg s= 0.94467 kJ/kg-K P2=0.8 MPa - hL= 275.40 kJ/kg P3 = 0.8 MPa –h= 95.48 kJ/kg