Answer to Question #246020 in Mechanical Engineering for Gaurav

Question #246020
The pressure-volume correlation for a non-flow quasi-static process is given by P= (8-4V) b, where p is in bar, where V is in m3. If 140 kJ of work in supplied to the system, determine the final pressure and volume of the system. Take the initial volume as 0.6m3.
1
Expert's answer
2021-10-04T04:55:11-0400

Amount of work supplied to a closed system = 150 kJ

Initial volume 0.6 m²

Pressure-volume relationship, p = 8 - 4V


The work done during the process is given by;





But this work is equal to 150 x 10³ J as this work is supplied to the system



Positive sign is incompatible with the present problem, therefore it is not considered.


Therefore, Final Volume (V2) = 0.354m³

Final pressure (P2) = = = 6.584 bar.


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