Answer to Question #252592 in Mechanical Engineering for Captain

Question #252592

A rigid tank contains air at 1.5 bar and 600C. The pressure of air is raised

to 2.5 bar by transfer if heat from a constant temperature reservoir at

4000C. The temperature of the surroundings is 270C. Determine per kg of

air, the loss of available energy due to heat transfer.


1
Expert's answer
2021-10-18T03:44:33-0400

final pressure will be 

p=vt 

=0.1×150.1\times 15

=1.5Mn/m21.5 Mn/m^2


final temperature will be 

t=p/v

=0.11/0.10.11/0.1

=1.1°celcius=1.1\degree celcius


heat transfer will be

=15×0.11×0.1=15\times0.11\times0.1

=0.165 answer


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