Water in a piston cylinder is at 150 lbf in 2, 900 F There are two stops, a lower one at which Vmin 61501 61472 35 ft3 and an upper one at Vmax 61501 61472 105 ft3 The piston is loaded with a mass and outside atmosphere such that it floats when the pressure is 75 lbf in 2 This setup is now cooled t...

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Water in a piston/cylinder is at 150 lbf/in 2, 900 F. There are two stops, a lower

Question:

Water in a piston/cylinder is at 150 lbf/in 2, 900 F. There are two stops, a lower one at which Vmin 35 ft3 and an upper one at Vmax 105 ft3. The piston is loaded with a mass and outside atmosphere such that it floats when the pressure is 75 lbf/in 2. This setup is now cooled to 210 F by rejecting heat to the surroundings at 70 F. Find the total entropy generated in the process.