A piston-cylinder device contains 0.05 m3 of water at 200kPa and 25ºC

[b1977]

1. Homework Statement A piston-cylinder device contains 0.05 m3 of water at 200kPa and 25ºC. The cross sectional area of the piston is 0.25 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3 the piston reaches a linear spring whose spring constant is 150kN/m. More heat is transferred to the water until the piston rises 30 cm more. Determine:
(i) The final pressure and temperature and
(ii) The work done during this process. Also, show the process on a P-V diagram.

Homework Equations

PV=MRT

The Attempt at a Solution

55 KJ

 

[Redbelly98]

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The Attempt at a Solution

55 KJ

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