Question: The compressors of a production facility maintain the compressed-air lines at a (gage) pressure of 850 kPa at 1400- m elevation, where the atmospheric pressure

The compressors of a production facility maintain the compressed-air lines at a (gage) pressure of 850 kPa at 1400- m elevation, where the atmospheric pressure is 85.6 kPa. The average temperature of air is 15°C at the compressor inlet and 25°C in the compressed-air lines. The facility operates 4200 h/yr, and the average price of electricity is $0.07/kWh. Taking the compressor efficiency to be 0.8, the motor efficiency to be 0.93, and the discharge coefficient to be 0.65, determine the energy and money saved per year by sealing a leak equivalent to a 5-mm-diameter hole on the compressed-air line.

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Therefore the facility will save 44755 kWh of electricity that is worth 3133 a year when this air le... View full answer

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