Problem 2 One kg of air initially at 5 bar and 350 K and 3 kg...
Problem 2 One kg of air initially at 5 bar and 350 K and 3 kg of carbon dioxide (CO2), initially at 2 bar and 450 K, are located in opposite compartments within a well-insulated rigid tank, separated by a movable wall free. The wall also allows heat to pass through without energy being stored in the partition wall. Both air and CO2 behave like ideal gases. Determine the final equilibrium temperature, in K, and the final pressure, in bar, considering the specific heats constant.
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Homework Answers
6.) A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar....
6.) A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. The diagram below shows a tank in contact with a thermal reservoir at 600 K and heat transfer occurs at the boundary where the temperature is 600 K. A stirring rod transfers 600 kJ of energy to the air. The final temperature is 600 K. The air can be modeled as an ideal gas with c 0.733 k.J/kg K and kinetic and potential energy...
Problem 3 A rigid, insulated tank filled with 0.6 kg of air is initially at 2...
Problem 3 A rigid, insulated tank filled with 0.6 kg of air is initially at 2 bar, 20°C. The air is stirred by a paddle wheel until its pressure is 2.5 bar. The volume specific heat (Cv) is constant with 0.72 kJ/KgK. Let To = 20°C, po = 1 bar ATTENTION: You are NOT allowed to use Table A-22 to find properties in this problem. Use the volume specific heat to find properties as needed. (a) Determine the final temperature...
A rigid copper tank, initially containing 1 m^3 of air at 295K, 5 bar, is connected...
A rigid copper tank, initially containing 1 m^3 of air at 295K, 5 bar, is connected by a valve to a large supply line carrying air at 295K, 15 bar. The valve is opened only as long as required to fill the tank with air to a pressure of 15 bar. Finally, the air in the tank is at 310 K. The copper tank, which has a mass of 20 kg, is at the same temperature as the air in...
An insulated rigid tank is divided into two equal parts by a partition. Initially, one part...
An insulated rigid tank is divided into two equal parts by a partition. Initially, one part contains 15 kg of water vapor with steam quality 20% at 20 bar and the other part is evacuated. The partition is removed, and the water vapor expands into the entire tank.a) Determine the final temperature and pressure using higher accuracy calculation. b) Recalculate (a) by assuming the gas behave as ideal gas
6.50 m A closed, rigid tank contains 5 kg of air initially at 300 K, 1...
6.50 m A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. As illustrated in Fig. P6.50, the tank is in contact with a thermal reservoir at 600 K and heat transfer occurs at the boundary where the temperature is 600 K. A stirring rod transfers 600 kJ of energy to the air. The final temperature is 600 K. The air can be modeled as an ideal gas with cy = 0.733 kJ/kg . K...
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a rigid tank connected by a valve to another r...
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a
rigid tank connected by a valve to another rigid tank holding 0.3
kg of CO2 at 300 K, 1 bar. The valve is opened and gases
are allowed to mix, achieving an equilibrium state at 280 K.
Determine:
(a) the volume of each tank, in m3.
(b) the final pressure, in bar.
(c) the magnitude of the heat transfer to or from the gases during
the process,...
Thermodynamics 1. (correct answer: 0.080595 ) Initially, an insulated rigid tank contains 20 kg of water...
Thermodynamics 1. (correct answer: 0.080595 ) Initially, an insulated rigid tank contains 20 kg of water at 29.5oC and 101 kPa. The tank also contains a 4.86 kg aluminum block at 93.2oC. Using constant specific heats evaluated at 300 K, determine the total entropy production (kJ/K) after an hour assuming thermal equilibrium is achieved. 2. Correct Answer: 8.0087 ± 0.1% Steam at 1 MPa, 593.2oC, expands in a turbine to 0.01 MPa. If the process is isentropic, find the specific...
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into...
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into halves by a separator. On one side of the separator is 1 m of air at 300 K, 2 bar. On the other side is 1 m of air at 500 K, 1 bar. The separator is removed, and the air from the two sides mixes and reaches equilibrium state Please treat the air as ideal gas with cp-1.001 kJ/kg K and c0.714 kJ/kg...
Problem 3-2 A rigid, well-insulated tank consists of two compartments eparated by a valve, one being...
Problem 3-2 A rigid, well-insulated tank consists of two compartments eparated by a valve, one being twice the volume of the other. Initially, the smaller compartment contains 10 kg of nitrogen at 6 bar and 100°C, while the larger one is evacuated. The valve is opened and the gas expands to fill the total volume, eventually achieving an equilibrium state. Calculate: a) The final temperature, in K. b) The final pressure, in bar, c) The total exergy destroyed, in kJ...
A rigid tank whose volume is 3 m3, initially containing air at 1 bar, 295 K,...
A rigid tank whose volume is 3 m3, initially containing air at 1 bar, 295 K, is connected by a valve to a large vessel holding air at 6 bar, 295 K. The valve is opened only as long as required to fill the tank with air to a pressure of 6 bar and a temperature of 320 K. Assuming the ideal gas model for the air determine the heat transfer between the tank contents and the surroundings, in kl....
6.) A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. The diagram below shows a tank in contact with a thermal reservoir at 600 K and heat transfer occurs at the boundary where the temperature is 600 K. A stirring rod transfers 600 kJ of energy to the air. The final temperature is 600 K. The air can be modeled as an ideal gas with c 0.733 k.J/kg K and kinetic and potential energy...
Problem 3 A rigid, insulated tank filled with 0.6 kg of air is initially at 2 bar, 20°C. The air is stirred by a paddle wheel until its pressure is 2.5 bar. The volume specific heat (Cv) is constant with 0.72 kJ/KgK. Let To = 20°C, po = 1 bar ATTENTION: You are NOT allowed to use Table A-22 to find properties in this problem. Use the volume specific heat to find properties as needed. (a) Determine the final temperature...
6.50 m A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. As illustrated in Fig. P6.50, the tank is in contact with a thermal reservoir at 600 K and heat transfer occurs at the boundary where the temperature is 600 K. A stirring rod transfers 600 kJ of energy to the air. The final temperature is 600 K. The air can be modeled as an ideal gas with cy = 0.733 kJ/kg . K...
Consider 0.7 kg of N2 at 300 K, 1 bar contained in a
rigid tank connected by a valve to another rigid tank holding 0.3
kg of CO2 at 300 K, 1 bar. The valve is opened and gases
are allowed to mix, achieving an equilibrium state at 280 K.
Determine:
(a) the volume of each tank, in m3.
(b) the final pressure, in bar.
(c) the magnitude of the heat transfer to or from the gases during
the process,...
Problem 3. (10 points) A closed and insulated rigid tank (perfectly insulated) is initially divided into halves by a separator. On one side of the separator is 1 m of air at 300 K, 2 bar. On the other side is 1 m of air at 500 K, 1 bar. The separator is removed, and the air from the two sides mixes and reaches equilibrium state Please treat the air as ideal gas with cp-1.001 kJ/kg K and c0.714 kJ/kg...
Problem 3-2 A rigid, well-insulated tank consists of two compartments eparated by a valve, one being twice the volume of the other. Initially, the smaller compartment contains 10 kg of nitrogen at 6 bar and 100°C, while the larger one is evacuated. The valve is opened and the gas expands to fill the total volume, eventually achieving an equilibrium state. Calculate: a) The final temperature, in K. b) The final pressure, in bar, c) The total exergy destroyed, in kJ...
A rigid tank whose volume is 3 m3, initially containing air at 1 bar, 295 K, is connected by a valve to a large vessel holding air at 6 bar, 295 K. The valve is opened only as long as required to fill the tank with air to a pressure of 6 bar and a temperature of 320 K. Assuming the ideal gas model for the air determine the heat transfer between the tank contents and the surroundings, in kl....
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