1. An insulated piston-cylinder device initially contains 275 L of air at 165 kPa and 35°C. Air is now heated for 5 min by a 550-W resistance heater placed inside the cylinder. The pressure of air is maintained constant during this process. Assume that constant specific heats. Cp.ave=1.02 kJ/kgK. Note: 1lt=ldm. AIR 275 It 165 kPa 35°C W. Determine; a. The final temperature, in K. b. The entropy change of air, in kJ/K.

1. An insulated piston-cylinder device initially contains 275 L of air at 165 kPa and 35°C. Air is now heated for 5 min by a 550-W resistance heater placed inside the cylinder. The pressure of air is maintained constant during this process. Assume that constant specific heats. Cp.ave=1.02 kJ/kgK. Note: 1lt=ldm. AIR 275 It 165 kPa 35°C W. Determine; a. The final temperature, in K. b. The entropy change of air, in kJ/K.

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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