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July 5, 2015

Homework Help: Thermodynamics

Posted by Moussa on Wednesday, March 13, 2013 at 7:21pm.

Water vapor was flowing through the pipeline at 0,8 MPa pressure and 250 C temperature. A cylinder-piston mechanism with a spring was attached to the pipeline with a closed valve. The valve was opened and the pressure inside the cylinder increased up to 0,8 MPa. Then the valve was closed. Consider that there is no heat transfer between the cylinder and the surrounding and there is no change in kinetics and potential of the gas in the tank. What is temperature of water vapor in the tank? Note that the force pushing the spring is linearly changing with squeezing distance.

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