Air flows steadily through an air compressor at a rate of 28 kgxmin-1 with a velocity of 12 mxs1 at 150 kPa and a specific volume of 0.96 m3xkg" 1. The internal energy of the air leaving the compressor is 95 kJ*kg-1 greater than that of the air entering. The air leaves at a velocity of 7 mxs1, 700 kPa and a specific volume of 0.30 mnkg-1, Cooling water in the compressor jackets absorbs heat from the air at the rate of 55 kW. Calculate: a. The rate of shaft work in kW. b. The ratio of inlet pipe diameter to outlet pipe diameter.

Air flows steadily through an air compressor at a rate of 28 kgxmin-1 with a velocity of 12 mxs1 at 150 kPa and a specific volume of 0.96 m3xkg" 1. The internal energy of the air leaving the compressor is 95 kJ*kg-1 greater than that of the air entering. The air leaves at a velocity of 7 mxs1, 700 kPa and a specific volume of 0.30 mnkg-1, Cooling water in the compressor jackets absorbs heat from the air at the rate of 55 kW. Calculate: a. The rate of shaft work in kW. b. The ratio of inlet pipe diameter to outlet pipe diameter.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Air flows steadily through an air compressor at a rate of 28 kg×min-1 with a velocity of 12 m×s-1 at 150 kPa and a specific volume of 0.96 m3×kg-1. The internal energy of the air leaving the compressor is 95 kJ×kg-1 greater than that of the air entering. The air leaves at a velocity of 7 m×s-1, 700 kPa and a specific volume of 0.30 m3×kg-1. Cooling water in the compressor jackets absorbs heat from the air at the rate of 55 kW. Calculate: The rate of shaft work in kW. The ratio of inlet pipe diameter to outlet pipe diameter.
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