Q.2A piston – cylinder device contains helium-gas initially at 150 kPa, 20or, and 0.53.m°. The helium is now compressed in apolytropic process to 400 kPa and 140.Determine the heat loss or gain during theprocess.RHe = 2.0769 kJ/kgK; C, = 3.1156 kJ/kgK.VA11.2В15.5C18.7D22.8

Given:Initial pressure, P1=150 kPaT1=20o CV1=0.5 m3Compressed polytropically,P2= 400 kPaT2=140o C

Answered: A piston – cylinder device contains…

Engineering

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A piston – cylinder device contains helium gas initially at 150 kPa, 20or, and 0.5 3

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Question

Q.2
A piston – cylinder device contains helium
-
gas initially at 150 kPa, 20or, and 0.5
3.
m°. The helium is now compressed in a
polytropic process to 400 kPa and 140.
Determine the heat loss or gain during the
process.
RHe = 2.0769 kJ/kgK; C, = 3.1156 kJ/kgK.
V
A
11.2
В
15.5
C
18.7
D
22.8

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