Homework Answers
We know pv = constant and pv = mRT
This implies that T1 = T2
Energy balance equation is Q12 - W12 = ^U12 + ^KE + ^PE
Here change in internal energy, potential energy, kinetic energy can be neglected
Therefore energy balance equation becomes Q12 = W12
Therefore Q12 = 240.85 KJ
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Just need part 2
Problem 3.075 SI pv - constant. Assume ideal gas behavior for the...
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Work and Heat Transfer in KJ
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3.111 Air contained in a piston-cylinder assembly contains air, initially at 2 bar, 300 K and...
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Problem 6.035 SI One kilogram of ammonia initially at 8.0 bar and 50°C undergoes a process...
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Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, unde...
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, undergoes a process to a final state where the pressure is 8 bar and the volume is 2 L During the process, the pressure-volume relationship is linear. Assuming the ideal gas model for the air, determine the work and heat transfer, each in kJ. 4.
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1...
1. a) A piston–cylinder assembly contains air, initially at 1.9 bar, 295 K, and a volume...
1. a) A piston–cylinder assembly contains air, initially at 1.9 bar, 295 K, and a volume of 0.6 m3. The air undergoes a process to a state where the pressure is 1 bar, during which the pressure–volume relationship is pV = constant. Assuming ideal gas behavior for the air, determine the mass in kg. b) Argon contained in a closed, rigid tank, initially at 51.1°C, 2.1 bar, and a volume of 2.9 m3, is heated to a final pressure of...
1.Argon contained in a closed, rigid tank, initially at 62.3°C, 3.9 bar, and a volume of...
1.Argon contained in a closed, rigid tank, initially at 62.3°C, 3.9 bar, and a volume of 4.2 m3, is heated to a final pressure of 9.4 bar. Assuming the ideal gas model with k = 1.6 for the argon, determine the heat transfer, in kJ. 2.Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 223°C from a pressure of 5.4 bar to a pressure of 1.9 bar. Evaluate the work, in kJ/kg. 3.A mass of 4 kilograms...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 290...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.06 m2 Assuming the ideal gas model with k 1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air,...
Problem 3.050 SI Five kg of water is contained in a piston-cylinder assembly, initially at 5...
Problem 3.050 SI Five kg of water is contained in a piston-cylinder assembly, initially at 5 bar and 500°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 2960 kJ and kinetic and potential energy effects are negligible. Determine the final volume, in m3, and the work for the process, in k. Step X Your answer is incorrect. Try again. Determine the final volume, in m3 v, = 1320.328 m3...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 4 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible. Determine the amount of entropy produced, in kJ/K per kg of air, for the compression. What is the minimum theoretical work input, in kj per kg of air, for an adiabatic compression from the given initial state to a final pressure of...
Work and Heat Transfer in KJ
please
Problem 3.076 SI Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, undergoes a process to a final state where the pressure is 7.5 bar and the volume Is 2 L. During the process, the pressure-volume relatlonshlp Is lInean Assuming the ideal gas model for the alr, determine the work and heat transfer, each In k)
Problem 6.035 SI One kilogram of ammonia initially at 8.0 bar and 50°C undergoes a process to 3.3 bar, 20°C while being rapidly expanded in a piston-cylinder assembly. Heat transfer between the ammonia and its surroundings occurs at an average temperature of 40°C The work done by the ammonia is 40 kJ. Kinetic and potential energy effects can be ignored. Determine the heat transfer, in kJ, and the entropy production, in kJ/K. Step 1 Determine the heat transfer, in kJ....
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1 L, undergoes a process to a final state where the pressure is 8 bar and the volume is 2 L During the process, the pressure-volume relationship is linear. Assuming the ideal gas model for the air, determine the work and heat transfer, each in kJ. 4.
Air contained in a piston-cylinder assembly, initially at 2 bar, 200 K, and a volume of 1...
Problem 4.018 SI Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 K, 1 bar, with a volumetric flow rate of 0.25 m3/s, and exits at 325 K, 0.95 bar. The flow area is 0.06 m2 Assuming the ideal gas model with k 1.4 for the air, determine: (a) the mass flow rate, in kg/s, (b) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer to the air,...
Problem 3.050 SI Five kg of water is contained in a piston-cylinder assembly, initially at 5 bar and 500°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 2960 kJ and kinetic and potential energy effects are negligible. Determine the final volume, in m3, and the work for the process, in k. Step X Your answer is incorrect. Try again. Determine the final volume, in m3 v, = 1320.328 m3...
Problem 6.030 SI Air is compressed adiabatically in a piston-cylinder assembly from 1 bar, 300 K to 4 bar, 600 K. The air can be modeled as an ideal gas and kinetic and potential energy effects are negligible. Determine the amount of entropy produced, in kJ/K per kg of air, for the compression. What is the minimum theoretical work input, in kj per kg of air, for an adiabatic compression from the given initial state to a final pressure of...
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