Engineering Board Exam Reviewer · Thermodynamics · medium
Air flows steadily through a compressor at 2 kg/s. Its temperature rises from 300 K to 450 K. Neglecting heat transfer and kinetic/potential energy changes, what is the power required? (cp = 1.0 kJ/kg· K)
- 150 kW
- 300 kW
- 900 kW
- 215.6 kW
Answer
B. 300 kW
Solution
W = mcp(T₂ - T1) = 2(1.0)(150) = 300 kW.
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