Steam undergoes an isentropic compression in an insulated piston–cylinder assembly from an initial state where T1...
Steam undergoes an isentropic compression in an insulated
piston–cylinder assembly from an initial state where
T1 = 120°C, p1 = 1 bar to a
final state where the pressure p2 = 20
bar.
Determine the final temperature, in °C, and the work, in kJ per kg
of steam.
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Steam undergoes an isentropic compression in an insulated
piston–cylinder assembly from an initial state where
T1...
1.) a) Water in a piston–cylinder assembly undergoes a constant-pressure process at 30 bar from T1...
1.) a) Water in a piston–cylinder assembly undergoes a constant-pressure process at 30 bar from T1 = 255.1°C to saturated vapor. Determine the work for the process, in kJ per kg of water. b) A piston-cylinder assembly contains 4.4 kg of water at 238oC and 3 bar. The water is compressed to a saturated vapor state where the pressure is 53.9 bar. During compression, there is a heat transfer of energy from the water to its surroundings having a magnitude...
Q3. One mole of N2 in a piston-cylinder assembly undergoes an adiabatic compression from an initial state of pressur...
Q3. One mole of N2 in a piston-cylinder assembly undergoes an adiabatic compression from an initial state of pressure 0.5 bar and molar volume 0.05 m/mol to a final state of pressure 10 bar and molar volume 0.003 m/mol. Use the vdw eos to determine the work done on the gas.
Q3. One mole of N2 in a piston-cylinder assembly undergoes an adiabatic compression from an initial state of pressure 0.5 bar and molar volume 0.05 m/mol to a final...
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...
4. Nitrogen in a piston/cylinder assembly undergoes an internally reversible compression between specified states through a...
4. Nitrogen in a piston/cylinder assembly undergoes an internally reversible compression between specified states through a polytropic process with n=1.30. Determine P, the work and heat transfer and entropy change during the process. The volume at state 1 is 0.5 m', the pressure at state 1 is 1. bar, and the temperature at state 1 is 20°C. The temperature at state 2 is 200°C. P2 - bar W = Q= AS _ kJ/K
One kg of air in a piston-cylinder assembly undergoes two processes in series from an initial...
One kg of air in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 0.5 MPa, T1 = 227oC. Process 1-2: Constant-temperature expansion until the volume is twice the initial volume. Process 2-3: Constant-volume heating until the pressure is again 0.5 MPa. Sketch the two processes in series on a p-v diagram. Assuming ideal gas behavior, determine (a) the pressure at state 2, in MPa, (b) the temperature at state 3, in oC, and...
4. Water is expanded reversibly in a well-insulated piston-cylinder assembly from an initial state with a...
4. Water is expanded reversibly in a well-insulated piston-cylinder assembly from an initial state with a pressure of 120 lbf/in?, temperature of 500° F, and volume of 20 ft to a final state with a pressure of 60 lb/in?. Determine the work done on the water in Btu. Neglect changes in kinetic energy and potential energy.
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where...
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p1 = 60 lbf/in.and T1 = 90°F to a final state where P2 = 10 lbf/in. During the process, the pressure and specific volume are related by pr2 = constant. Determine the energy transfer by work, in Btu. W = Btu the tolerance is +/-2%
write clearly 2.48 Steam in a piston-cylinder assembly undergoes a poly- tropic process, with n 2,...
write clearly
2.48 Steam in a piston-cylinder assembly undergoes a poly- tropic process, with n 2, from an initial state where p 3.45 MPa, v 0.106 m/kg, u 3,171.1 kJ/kg, to a final state where u 2,303.9 kJ/kg. During the process, there is a heat transfer from the steam of magnitude 361.76 kJ. The mass of steam is 0.54 kg. Neglecting changes in kinetic and potential energy, determine the work, in kJ, and the final specific volume, in m'/kg.
PROBLEM-3 (30%) One kg of air in a piston-cylinder assembly undergoes two processes in series from...
PROBLEM-3 (30%) One kg of air in a piston-cylinder assembly undergoes two processes in series from an initial state where P1 = 0.5 MPa, T1 = 227°C: Process 1-2: Constant-temperature expansion until the volume is twice the initial volume. Process 2–3: Constant-volume heating until the pressure is again 0.5 MPa. Sketch the two processes in series on a P-v diagram. Assuming ideal gas behavior, determine: (a) the pressure at state 2, (in MPa) (b) the temperature at state 3, (in...
Air undergoes an isentropic process from p1=1atm, T1=540R to a final state where the temperature is...
Air undergoes an isentropic process from p1=1atm, T1=540R to a final state where the temperature is T2=1160R. employing the ideal gas model, determine the final pressure p2, in atm. Assume a constant specific ratio k evaluated at the mean temperature.
Q3. One mole of N2 in a piston-cylinder assembly undergoes an adiabatic compression from an initial state of pressure 0.5 bar and molar volume 0.05 m/mol to a final state of pressure 10 bar and molar volume 0.003 m/mol. Use the vdw eos to determine the work done on the gas.
Q3. One mole of N2 in a piston-cylinder assembly undergoes an adiabatic compression from an initial state of pressure 0.5 bar and molar volume 0.05 m/mol to a final...
4. Nitrogen in a piston/cylinder assembly undergoes an internally reversible compression between specified states through a polytropic process with n=1.30. Determine P, the work and heat transfer and entropy change during the process. The volume at state 1 is 0.5 m', the pressure at state 1 is 1. bar, and the temperature at state 1 is 20°C. The temperature at state 2 is 200°C. P2 - bar W = Q= AS _ kJ/K
4. Water is expanded reversibly in a well-insulated piston-cylinder assembly from an initial state with a pressure of 120 lbf/in?, temperature of 500° F, and volume of 20 ft to a final state with a pressure of 60 lb/in?. Determine the work done on the water in Btu. Neglect changes in kinetic energy and potential energy.
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p1 = 60 lbf/in.and T1 = 90°F to a final state where P2 = 10 lbf/in. During the process, the pressure and specific volume are related by pr2 = constant. Determine the energy transfer by work, in Btu. W = Btu the tolerance is +/-2%
write clearly
2.48 Steam in a piston-cylinder assembly undergoes a poly- tropic process, with n 2, from an initial state where p 3.45 MPa, v 0.106 m/kg, u 3,171.1 kJ/kg, to a final state where u 2,303.9 kJ/kg. During the process, there is a heat transfer from the steam of magnitude 361.76 kJ. The mass of steam is 0.54 kg. Neglecting changes in kinetic and potential energy, determine the work, in kJ, and the final specific volume, in m'/kg.
PROBLEM-3 (30%) One kg of air in a piston-cylinder assembly undergoes two processes in series from an initial state where P1 = 0.5 MPa, T1 = 227°C: Process 1-2: Constant-temperature expansion until the volume is twice the initial volume. Process 2–3: Constant-volume heating until the pressure is again 0.5 MPa. Sketch the two processes in series on a P-v diagram. Assuming ideal gas behavior, determine: (a) the pressure at state 2, (in MPa) (b) the temperature at state 3, (in...
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