Question

Carbon dioxide gas is compressed at steady state from a pressure of 16 lbf/in2 and a...

Carbon dioxide gas is compressed at steady state from a pressure of 16 lbf/in2 and a temperature of 32oF to a pressure of 50 lbf/in2 and a temperature of 110oF. The gas enters the compressor with a velocity of 30 ft/s and exits with a velocity of 80 ft/s. The mass flow rate is 3000 lb/hr. The magnitude of the heat transfer rate from the compressor to its surroundings is 5% of the compressor power input. Use the ideal gas model with cp = 0.21 Btu/lb·oR and neglect potential energy effects.

Determine the flow area at the inlet, in ft2, and the compressor power, in horsepower

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