SpecialProblems11-12 - water are 20C and 2.5 MPa,...

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Special Problems for ME 200 - Spring 2011 Problems Due February 11, 2011 SP 11: Steam contained in a piston-cylinder device is cooled slowly at a constant pressure of 700 kPa. The mass of the steam is 2.2 kg. The initial volume is 1.0267 m 3 and the final volume is 0.75 m 3 . (a) Find the initial and final temperature ( C) of the steam. (b) What is the work (kJ) associated with this process? (c) Calculate the heat transfer (kJ). SP 12: Heat is added to 4 kg of water in a rigid tank. The initial temperature and pressure of the
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Unformatted text preview: water are 20C and 2.5 MPa, respectively. The final water temperature is 40C. Find the heat transferred (kJ) to the water by three different methods: (a) Using compressed liquid water tables (b) Using the saturated water (liquid-vapor) table. Hint: Make an approximation to obtain the compressed liquid state. (c) Using constant specific heats for water at 300 K....
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This note was uploaded on 09/09/2011 for the course ME 200 taught by Professor Gal during the Spring '08 term at Purdue University-West Lafayette.

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