A twin-cylinder, double- acting, compressor with a clearance of 5% draws in oxygen at 450 kPa, 17°C, and discharges it at 1800 kPa. The mass flow rate is 20kg/min, compression and expansion are polytropic with n= 1.25. Find (a) the work, (b) the heat transferred, and (c) the bore and stroke for 100 rpm and L/D= 1.20.Answer: (a) -40.23 kW, (b) -829 kJ/min (c) 21.71 x 25.76 cm 2. A twin-cylinder, double- acting, compressor with a clearance of 5%draws in oxygen at 450kPa, 17°C, and discharges it at 1800 kPa. The mass flow rate is 20kg/min, compression andexpansion are polytropic with n= 1.25. Find (a) the work, (b) the heat transferred, and (c) thebore and stroke for 100 rpm and L/D= 1.20.Answer: (a) -40.23 kW, (b) -829 kJ/min (c) 21.71 x 25.76 cm

Given data: Clearance, C=5% P1=450kpa T=17°C=273+17=290K P2=1800kpa.…

Answered: A twin-cylinder, double- acting,…

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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A twin-cylinder, double- acting, compressor with a clearance of 5% draws in oxygen at 450 kPa, 17°C, and discharges it at 1800 kPa. The mass flow rate is 20kg/min, compression and expansion are polytropic with n= 1.25. Find (a) the work, (b) the heat transferred, and (c) the bore and stroke for 100 rpm and L/D= 1.20.

Answer: (a) -40.23 kW, (b) -829 kJ/min (c) 21.71 x 25.76 cm

2. A twin-cylinder, double- acting, compressor with a clearance of 5%draws in oxygen at 450
kPa, 17°C, and discharges it at 1800 kPa. The mass flow rate is 20kg/min, compression and
expansion are polytropic with n= 1.25. Find (a) the work, (b) the heat transferred, and (c) the
bore and stroke for 100 rpm and L/D= 1.20.
Answer: (a) -40.23 kW, (b) -829 kJ/min (c) 21.71 x 25.76 cm

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