A piston and cylinder assembly contains a mixture of 35 vol % CO2, 45 vol %...
A piston and cylinder assembly contains a mixture of 35 vol % CO2, 45 vol % CO, and 20 vol % O2 at 25oC. It is heated to 500oC at constant volume. Find the heat required in kJ/kg. You may assume that no reaction is taking place.
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A piston and cylinder assembly contains a mixture of 35 vol %
CO2, 45 vol %...
A piston–cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of 40%....
A piston–cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of 40%. The ammonia is slowly heated to a final state where the pressure is 6 bar and the temperature is 100°C. While the ammonia is heated, its pressure varies linearly with specific volume. For the ammonia, determine the work and heat transfer, each in kJ/kg.
A piston-cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of 70%....
A piston-cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of 70%. The ammonia is slowly heated to a final state where the pressure is 6 bar and the temperature is 160°C. While the ammonia is heated, its pressure varies linearly with specific volume. For the ammonia, determine the work and heat transfer, each in kJ/kg.
Problem 1: (400 points) A piston-cylinder assembly contains a two-phase liquid mixture of Refrigerant 22 (R22)...
Problem 1: (400 points) A piston-cylinder assembly contains a two-phase liquid mixture of Refrigerant 22 (R22) initially at 24°C with a quality of 90%. Expansion occurs to a state where the pressure is 1 bar. During the process, the pressure and specific volume are related by pvos = constant. Determine 1. The work per unit mass [kJ/kg). (200 points) 2. The heat transfer per unit mass (kJ/kg] during the process. (100 points). 3. Show the process on p-v and T-v...
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure...
1.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 277°C from a pressure of 5.1 bar to a pressure of 2.7 bar. Evaluate the work, in kJ/kg. 2.Nitrogen (N2) contained in a piston–cylinder arrangement, initially at 9.3 bar and 437 K, undergoes an expansion to a final temperature of 300 K, during which the pressure–volume relationship is pV1.1 = constant. Assuming the ideal gas model for the N2, determine the heat transfer in kJ/kg. 3.Argon contained in...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
finding work and heat transfer given a piston-cylinder assembly
As shown in Fig. P2.56, a gas contained within a piston–cylinder assembly, initially at a volume of 0.1 m3, undergoesa constant-pressure expansion at 2 bar to a final volume of0.12 m3, while being slowly heated through the base. Thechange in internal energy of the gas is 0.25 kJ. The pistonand cylinder walls are fabricated from heat-resistant material,and the piston moves smoothly in the cylinder. The localatmospheric pressure is 1 bar.(a) For the gas as the system, evaluate work and heat...
Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 200°C....
Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 200°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 3260 kJ and kinetic and potential energy effects are negligible. Determine the final volume, in m3, and the work for the process, in kJ.
A piston-cylinder assembly contains propane, initially at 27 °C, 1 bar, and a volume of 0.2...
A piston-cylinder assembly contains propane, initially at 27 °C,
1 bar, and a volume of 0.2 m3 . The propane undergoes a process to
a final pressure of 6 bar, during which the pressure-volume
relationship is pV1.1 = constant. For the propane, evaluate the
work and heat transfer, each in kJ. Kinetic and potential energy
effects can be ignored.
Problem 10. A piston-cylinder assembly contains propane, initially at 27 'C, 1 bar, and a volume of 0.2 m2. The propane...
3.111 Air contained in a piston-cylinder assembly contains air, initially at 2 bar, 300 K and...
3.111 Air contained in a piston-cylinder assembly contains air, initially at 2 bar, 300 K and a volume of 2 m^3. The air undergoes a process to a state where pressure is 1 bar, during which the pressure-volume relationship is PV=constant. Assuming ideal gas behavior for air, determine the mass of the air, in kg and the work and heat transfer, each in KJ.
1 kg air in a piston-cylinder assembly is heated at constant pressure, resulting the expansion of...
1 kg air in a piston-cylinder assembly is heated at constant pressure, resulting the expansion of the volume. The initial temperature of the air was 300 K, and the air temperature becomes 500 K after the expansion. What is the boundary work done by the air? Assume that air is an ideal gas with constant specific heats ( 0.718 v c = kJ/kg-K and 1.005 p c = kJ/kg-K)..
A piston-cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of 70%. The ammonia is slowly heated to a final state where the pressure is 6 bar and the temperature is 160°C. While the ammonia is heated, its pressure varies linearly with specific volume. For the ammonia, determine the work and heat transfer, each in kJ/kg.
Problem 1: (400 points) A piston-cylinder assembly contains a two-phase liquid mixture of Refrigerant 22 (R22) initially at 24°C with a quality of 90%. Expansion occurs to a state where the pressure is 1 bar. During the process, the pressure and specific volume are related by pvos = constant. Determine 1. The work per unit mass [kJ/kg). (200 points) 2. The heat transfer per unit mass (kJ/kg] during the process. (100 points). 3. Show the process on p-v and T-v...
A piston-cylinder assembly initially contains 0.8 kg of air at 100 kPa and 300 K. It is then compressed in a polytropic process PV3 = C to half the original volume. Assuming the ideal gas model for air and specific heat ratio is constant, k=1.4, determine (a) the final temperature, (b) work and heat transfer, each in kJ. R= 0.287 kJ/kg K. W, 82
A piston-cylinder assembly contains propane, initially at 27 °C,
1 bar, and a volume of 0.2 m3 . The propane undergoes a process to
a final pressure of 6 bar, during which the pressure-volume
relationship is pV1.1 = constant. For the propane, evaluate the
work and heat transfer, each in kJ. Kinetic and potential energy
effects can be ignored.
Problem 10. A piston-cylinder assembly contains propane, initially at 27 'C, 1 bar, and a volume of 0.2 m2. The propane...
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