(b) An air motor operates with a cylinder bore of 65 mm and maximum stroke of 115 mm. The supply pressure is 6.5 bar at 28°C with the exhaust pressure is maintained at atmospheric pressure. The air motor clearance volume is 5% of the swept volume and the cut-off ratio is 0.5. The induced air is compressed by the returning piston after it has travelled 95% through its stroke. Given that pV'=constant, calculate; (1) the resulting temperature (K) at the end of expansion; (ii) the indicated power (kW) of the motor at 400 rpm; and (iii) the mass flowrate (kg/min) of air supplied by the air motor.

(b) An air motor operates with a cylinder bore of 65 mm and maximum stroke of 115 mm. The supply pressure is 6.5 bar at 28°C with the exhaust pressure is maintained at atmospheric pressure. The air motor clearance volume is 5% of the swept volume and the cut-off ratio is 0.5. The induced air is compressed by the returning piston after it has travelled 95% through its stroke. Given that pV'=constant, calculate; (1) the resulting temperature (K) at the end of expansion; (ii) the indicated power (kW) of the motor at 400 rpm; and (iii) the mass flowrate (kg/min) of air supplied by the air motor.

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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