530.231_HW4 - 530.231 Fall 2009 HOMEWORK NO. 4 1. A...

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530.231 Fall 2009 HOMEWORK NO. 4 1. A piston/cylinder arrangement has the piston loaded with outside atmospheric pressure and the piston mass to a pressure of 175 kPa, shown in Fig.1. It contains water at 6°C, which is then heated until the water becomes saturated vapor. Find the final temperature and specific work and heat transfer for the process. Fig.1 2. A rigid tank is divided into two rooms by a membrane, both containing water, shown in Fig. 2. Room A is at 300 kPa, v = 0.25 m3/kg, V A = 1 m3, and room B contains 1.5 kg at 0.8 MPa, 600°C. The membrane now ruptures and heat transfer takes place so the water comes to a uniform state at 100°C. Find the heat transfer during the process. Fig.2 3. A rigid insulated tank is separated into two rooms by a stiff plate. Room A of 1 m3 contains air at 200 kPa, 460 K and room B of 1 m3 has air at 250 kPa, 1100 K. The plate is removed and the air comes to a uniform state without any heat transfer. Find the final pressure and temperature.
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This note was uploaded on 03/30/2010 for the course MECHE EN.530.231 taught by Professor Kitsi during the Fall '09 term at Johns Hopkins.

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530.231_HW4 - 530.231 Fall 2009 HOMEWORK NO. 4 1. A...

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