Unformatted text preview: in? Answer: -53.3 kJ 4. A well insulated rigid tank contains 2 kg of a saturated liquid-vapor mixture of water at 150 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistor placed in the tank is connected to a 110 V source, and a current of 8 A flows through the resistor when the switch is turned on. Determine how long it will take to vaporize all the liquid in the tank. Also, show the process on a T-v diagram with respect to saturation lines. Answer: 60.2 min. 5. Saturated water vapor at 200°C is isothermally condensed to a saturated liquid in a piston-cylinder device. Calculate the heat transfer and work done during this process, in kJ/kg. Answers: 1940 kJ/kg and 196 kJ/kg....
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- Spring '08
- Heat, Water vapor, saturated water vapor