21. In a repair shop compressed air is used to operate pneumatic tools. The total length of the airline including all the loss coefficients in terms of equivalent air is about 500 ft. The airline consists of smooth pipe of I.D. = 0.5 inch. The com- pressed air is cooled to 75 F when entering the line. A pneumatic tool requires 35 psia of compressed air to operate. To what pressure should the air be pressurized by a compressor to provide the desired pressure for the tool? What power is required to obtain such pressure if the compression process can be assumed isentropic? Air ve- looity ot the inlet ic 10 &le

21. In a repair shop compressed air is used to operate pneumatic tools. The total length of the airline including all the loss coefficients in terms of equivalent air is about 500 ft. The airline consists of smooth pipe of I.D. = 0.5 inch. The com- pressed air is cooled to 75 F when entering the line. A pneumatic tool requires 35 psia of compressed air to operate. To what pressure should the air be pressurized by a compressor to provide the desired pressure for the tool? What power is required to obtain such pressure if the compression process can be assumed isentropic? Air ve- looity ot the inlet ic 10 &le

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter37: Air Distribution And Balance

Section: Chapter Questions

Problem 21RQ: If a rectangular duct system s (12in.26in.) has an average velocity of 700 fpm, what is the airflow?

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