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3-44 Revisted) Water initially at 200 kPa and 300C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool at
3-44 Revisted) Water initially at 200 kPa and 300C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool until the pressure is 100 kPa. a. Determine the heat transfer during the initial cooling to the stops using enthalpies b. Determine the heat transfer during the final cooling when the volume is constant using internal energies c. Determine the initial internal energy, and using this determine the work for the process without calculating specific volumes d. Calculate the work during the initial cooling by determing specific volumes. Compare answer to part c. Q Water 200 kPa 300C
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