An ideal vapor compression refrigeration cycle using r134a as the refrigerant is being used to cool...

An ideal vapor compression refrigeration cycle using r134a as the refrigerant is being used to cool a house. It provides 3 refrigeration tons ≈ 10.5kW of cooling (heat removal from the house air). The refrigerant in the evaporator operates at 400kPa while in the condenser it is at 1000kPa. Treat the surroundings as a thermal reservoir at 33◦C and the air in the house as a thermal reservoir at 19◦C. All reservoirs are at 100kPa.

1. What is the COPr of this cycle?

2. How fast is exergy destroyed (kJ/s) in each process (evaporator, condenser, throttle, compressor)?

3. Which process has the lowest second law efficiency?

4. What is the rate of exergy destruction (kJ/s) for the cycle?

Expert Solution

samet mamat answered 3 years ago

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