An insulated vertical piston–cylinder device initially contains 15 kg of water, 13 kg of which is in the vapor phpressure of 300 kPa inside the cylinder. Now steam at 2 MPa and 400°C is allowed to enter the cylinder from a supply line until all the liquid in the cylinder is vaporized. Assuming the surroundings to be at 25°C and 100 kPa, determine the exergy destroyed during this process.ase. The mass of the piston is such that it maintains a constant
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