Refrigerant 134a enters an air conditioner compressor at 4 bar, 20 C, and is compressed at steady state to 12 bar, 80 C. The volumetric flow rate of the refrigerant entering is 4 m3/min. The work input to the compressor is 60 kJ/kg of refrigerant flowing. Neglect kinetic and potential energy effects, determine the heat transfer rate, in kW.

Explanation:

From the question we are told that:

Initial Pressure

Initial Temperature

Final Pressure  

Final Temperature

Work Output

Generally Specific Energy from table is

At initial state

With

Specific Volume

At Final state

Generally the equation for The Process is mathematically given by

Assuming Mass to be Equal

Where

Therefore

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hi

explanation: