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and vapor results. O e. It becomes compressed liquid. 1 ered A rigid tank contains 2.0...
A rigid tank contains 2.0 kg saturated liquid water at 60 C, then 25 kJ of heat was added to it while being stirred with a paddle which resulted in adding 30 kJ of wok, what is the final internal energy (kJ) of the water?
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A rigid, insulated tank fitted with a paddle wheel is filled with water, initially a two-phase liquid-vapor mixture at 200 kPa, consisting of 0.04 kg of saturated liquid and 0.04 kg of saturated vapor. The tank contents are stirred by the paddle wheel until all of the water is saturated vapor at a pressure greater than 138 kPa. Kinetic and potential energy effects are negligible. For the water, determine...
A well-insulated rigid tank contains 2 kg of a saturated liquid-vapor mixture of water at 100 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is now turned on and kept on until all the liquid in the tank is vaporized. Determine the entropy change of the steam during this process. Answer: 8.10 kJ/K Analysis From the steam tables (Tables A-4 through A-6)
A rigid tank contains 125,0 kg of saturated water vapor at 245 °C. Determine : a. The pressure b. The internal energy in kJ c. The volume of the rigid tank.
In a well-insulated rigid tank which contains 2 kg of a saturated liquid-vapor mixture of water at 200 kPa, 40% of the mass is in the liquid phase. A heater is providing heat to the content of the tank so that all liquid phase converts to vapor phase. Calculate the entropy change of water in this process.
A rigid tank having a volume of 0.1 m3 initially contains water as a two-phase liquid-vapor mixture at 1 bar and a quality of 1%. The water is heated in two stages: Stage 1: Constant-volume heating until the pressure is 20 bar. (treat as closed system) Stage 2: Continued heating while saturated water vapor is slowly withdrawn from the tank at a constant pressure of 20 bar. (Note: Use transient analysis with all the water leaving having a quality of...
A well-insulated rigid tank contains 5.80 kg of a saturated liquid-vapor mixture of water at 225 kPa. Initially, one-quarter of the mass in the liquid phase. An electric resistor placed in the tank is connected to 240-V source, and a current of 6 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 in minute.
Don’t round any decimals please
A 160 m3 rigid tank is filled with saturated liquid-vapor mixture of water at 50 C.0.89 of the of the mixture in unit of m2/kg. Round the result to 4 decimal places.
A rigid tank is divided into two equal parts by a partition. One part of the tank contains 3.0 kg of compressed liquid water at 400 kPa and 50°C, while the other part is evacuated. The partition is now removed and the water expands to fill the entire tank. Determine the entropy change of the water during this process, if the pressure in the tank is 30 kPa.
The following description applies to this problem and the next one. A rigid tank with a volume of 1.908 m2 contains 15 kg of saturated liquid-vapor mixture of water at 90°C. a. The internal energy of the water, in kJ, is closer to: 0 785 0 225 07353 O 12534 O 376.9 490 O 2117 0 2494 Question 12 Now the water is slowly heated. The temperature in °C at which the liquid in the tank is completely vaporized is...