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Two thousand kg of water, initially a saturated liquid at 150C, is heated in a closed, rigid tank to a final state where the pressure is 2.5 MPa. Determine the final temperature, in C, the volume of the tank, in m3 , and sketch the process on T–v and p–v diagrams.

Steam is contained in a closed rigid container. Initially, the pressure and temperature of the steam are 15 bar and 240C, respectively. The temperature drops as a result of heat transfer to the surroundings. Determine the pressure at which condensation first occurs, in bar, and the fraction of the total mass that has condensed when the temperature reaches 100C. What percentage of the volume is occupied by saturated liquid at the final state?

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