A piston-cylinder device contains 3.2 kg of air initially at 300 kPa and 227 °C (State 1). The air is now expanded slowly in polytropic process during which PV¹.2=constant (n=1.2) until the volume is doubled (State 2). Then the air expanded at constant pressure until the volume reached three times the volume of State 1 (State 3). Air properties: R = 287 J/kg.K, Cv = 718 J/kg.K, and Cp = 1005 J/kg.K a) Calculate the total work done and the heat transfer in kJ. b) Draw the two processes on p-v diagram.

A piston-cylinder device contains 3.2 kg of air initially at 300 kPa and 227 °C (State 1). The air is now expanded slowly in polytropic process during which PV¹.2=constant (n=1.2) until the volume is doubled (State 2). Then the air expanded at constant pressure until the volume reached three times the volume of State 1 (State 3). Air properties: R = 287 J/kg.K, Cv = 718 J/kg.K, and Cp = 1005 J/kg.K a) Calculate the total work done and the heat transfer in kJ. b) Draw the two processes on p-v diagram.

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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