Air enters a compressor operating at steady state at a pressure of 1 bar, a temperature of 260 K, and a velocity of 8 m/s through an inlet with an area of 0.25 m2. At the exit, the pressure is 7 bar, the temperature is 450 K, and the velocity is 2 m/s. Heat transfer from the compressor to its surroundings occurs at a rate of 180 kJ/min. Employing the ideal gas model, calculate the power input to the compressor, in kW.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Air enters a compressor operating at steady state at a
pressure of 1 bar, a temperature of 260 K, and a velocity of 8
m/s through an inlet with an area of 0.25 m2. At the exit, the
pressure is 7 bar, the temperature is 450 K, and the velocity is
2 m/s. Heat transfer from the compressor to its surroundings
occurs at a rate of 180 kJ/min. Employing the ideal gas model,
calculate the power input to the compressor, in kW.
Select one:
a. -119.4 kW
b. -419.8 kW
O c. -330.5 kW
d. -610.7 kW
Transcribed Image Text:Air enters a compressor operating at steady state at a pressure of 1 bar, a temperature of 260 K, and a velocity of 8 m/s through an inlet with an area of 0.25 m2. At the exit, the pressure is 7 bar, the temperature is 450 K, and the velocity is 2 m/s. Heat transfer from the compressor to its surroundings occurs at a rate of 180 kJ/min. Employing the ideal gas model, calculate the power input to the compressor, in kW. Select one: a. -119.4 kW b. -419.8 kW O c. -330.5 kW d. -610.7 kW
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