9.A single stage air compressor handles 0.454 m3/s ofatmospheric pressure, 27C air and delivers it to areceiver at 652.75kPa. Its volumetric efficiency is 0.72,its compression efficiency on an isothermal basis is0.85 and its mechanical efficiency is 0.90. If it rotates at350 rpm, what power in kW is required to drive it?a.95

10.A single acting air compressor has a volumetricefficiency of 87% operates at 500 rpm. It takes in air at100kPa and 30C and discharges it at 600 kPa. The airhandled is 6 m3/min measured at discharge condition.If compression is isentropic, find the mean effectivepressure in kPa.

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11.An air compressor is to compress 8.5 m3/min from98.56kPa to 985.6kPa. Assuming ideal conditions, andwith n = 1.3, what will be the saving in work due to twostaging?

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12.A two-stage compressor receives 0.35 kg/s of air at100kPa and 269K and delivers it at 5000kPa. Find theheat transferred in the intercooler.a.62.49kWb.79.49kWc.76.49kWd.70.49kW

13.A single acting two-stage air compressor delivers air at16 bar. The volume flow rate of air entering thecompressor is 17 m3/min with the temperature andpressure of 33C and 1 bar respectively. If thecompressor is designed for minimum work andcomplete intercooling, determine the power requiredto drive the first stage if it follows the compression lawof P𝑉𝑉1.3=𝐶𝐶A.47kWB.27kWC.37kWD.40kW

14.A fuel pump is delivering 10 gallons per minute of oilwith a specific gravity of 0.83. The total head is 9.14 m,find how much energy does the pump consumes in kJper hour.

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