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.
Expert's answer

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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