Problem 2 (45 points)- Consider the two stage refrigeration system shown. It is used for cooling...

 

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Problem 2 (45 points)- Consider the two stage refrigeration system shown. It is used for cooling two cold storage rooms each with a capacity of 200 tons, and evaporator temperatures of 0 C and -12 C respectively. The condenser is operating at pressure of 1.2 MPa. The efficiency of compressors is 90%.. A- Draw a T-s diagram of the cycle, and calculate: 5 Fumy 6 I Alto Famig OC FOT B-Mass flow rate of refrigerant in each room. C-Power of the compressors D-Capacity of the condenser E-Coefficient of performance of the whole system. Note: Make reasonable estimates instead of interpolation for properties. Q Condenser I 4 Ir 8 I 4x+mt Evaporton Compressors -120 Problem 2 (45 points)- Consider the two stage refrigeration system shown. It is used for cooling two cold storage rooms each with a capacity of 200 tons, and evaporator temperatures of 0 C and -12 C respectively. The condenser is operating at pressure of 1.2 MPa. The efficiency of compressors is 90%.. A- Draw a T-s diagram of the cycle, and calculate: 5 Fumy 6 I Alto Famig OC FOT B-Mass flow rate of refrigerant in each room. C-Power of the compressors D-Capacity of the condenser E-Coefficient of performance of the whole system. Note: Make reasonable estimates instead of interpolation for properties. Q Condenser I 4 Ir 8 I 4x+mt Evaporton Compressors -120