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Question

Refrigerant 134a enters a compressor operating at steady state as saturated vapor at 0.12 MPa and exits at 1.2 MPa and $70^{\circ}C$ at a mass flow rate of 0.108 kg/s. As the refrigerant passes through the compressor, heat transfer to the surroundings occurs at a rate of 0.32 kJ/s. Determine at steady state the power input to the compressor, in kW.

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

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1 of 6**Given:**

$p_1=0.12 \space \text{MPa}=1.2 \space \text{bar}$ $p_2=1.2 \space \text{MPa}=12 \space \text{bar}$ $T_2=70 \space ^{\circ} \text{C}$ $\dot m=0.108 \space \frac{\text{kg}}{\text{s}}$ $\dot Q=-0.32 \space \frac{\text{kJ}}{\text{s}}$

Refrigerant 134a enters a compressor and compresses at steady state. The power input to the compressor is to be determined.

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