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A gas in a piston-cylinder undergoes the following 3 step cycle: Process A: constant pressure compression...
A piston-cylinder assembly contains air modeled as an ideal gas. The air undergoes a power cycle...
A piston-cylinder assembly contains air modeled as an ideal gas. The air undergoes a power cycle consisting of four processes in series: • Process 1-2: Constant-temperature expansion at 600 K from p1 = 0.5 MPa to p2 = 0.4 MPa. • Process 2-3: Polytropic expansion with n = 1.3 to p3 = 0.3 MPa. • Process 3-4: Constant-pressure compression to ν4 = ν1. • Process 4-1: Constant-volume heating. a) Sketch the cycle on a p-ν diagram. b) Calculate the work...
A piston-cylinder assembly undergoes a cycle consisting of the following three processes:
A piston-cylinder assembly undergoes a cycle consisting of the following three processes: • Process 1-2: Compression with constant internal energy • Process 2-3: Constant-volume cooling to p3 = 100 kPa, V3 = 0.1 m3 • Process 3-1: Constant-pressure expansion with W31 = 12 kJ Sketch the cycle on a p-V diagram, labeling each of the states and indicating the process directions with arrows. If the work for the entire cycle is Wcycle = -20 kJ and changes in kinetic and potential energy are negligible,...
QUESTION 7 A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to...
QUESTION 7 A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to form a thermodynamic cycle. Process 1->2: Constant volume cooling from P:-3.0bar to p1.5bar and X-0.728 to Process 2-->3: Constant pressure expansion Process 3-1: Polytropic compression with pv2 constant to the initial state Kinetic and potential energy effects are negligible. To help organize given information and fix states 1 and 3, consider sketching a Pv diagram Evaluate the net heat transfer for the cycle in...
Air in a piston-cylinder undergoes a cycle with the following processes: Process 1-2: Isobaric process from...
Air in a piston-cylinder undergoes a cycle with the following processes: Process 1-2: Isobaric process from P = 0.1 MPa, T1 = 600K to T2 = 1200K Process 2-3: Isothermal process to state 3 where P3 = 0.05 MPa Process 3-4: Isochoric process to state 4 where P4 = 0.031 MPa Process 4-1: Polytropic process back to state 1 (a) Show the processes in a P-V plot showing the values. Also calculate or state the values of P. V. T...
One kg of air is in a piston-cylinder assembly. Air is modeled as an ideal gas...
One kg of air is in a piston-cylinder assembly. Air is modeled as an ideal gas with a constant specific heat ratio, k = 1.4. The air undergoes a power cycle consisting of four processes in series: Process 1-2: Constant-temperature expansion at 600 K from P, = 0.5 MPa to P2 = 0.4 MPa Process 2-3: Polytropic expansion with n=k to P; - 0.3 MPa Process 3-4: Constant-pressure compression to V4-V Process 4-1: Constant-volume heating. (a) Sketch the cycle on...
A gas undergoes a cycle in a piston-cylinder assembly consisting of the following three processes:
A gas undergoes a cycle in a piston-cylinder assembly consisting of the following three processes:Process 1-2: Constant pressure, p=1.4 bar, v₁=0.028 m³, w12=10 kJProcess 2-3: Compression with p V= constant, U₃=U₂Process 3-1: Constant volume, U₁-U₃=-25 kJThere are no significant changes in kinetic or potential energy.(a) Calculate the net work for the cycle, in kJ.(b) Calculate the heat transfer for process 1-2, in kJ.
Problem # 2 135 Points Polytropic Processes A piston-cylinder undergoes a constant pressure expansion process followed...
Problem # 2 135 Points Polytropic Processes A piston-cylinder undergoes a constant pressure expansion process followed by an adiabatic compression. The adiabatic compression can be modeled as a polytropic process PVn constant with a volume exponent n 1.4. At state 1 the pressure of the system is P1 60 psi, the volume is Vi 8.868 ft3 and the internal energy U 1630.6 BTU. The work output during the constant pressure process is W2-75.2 BTU and the heat transfer input for...
A gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1-2:...
A gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1-2: Constant volume V1 = 2 m3, p1 = 1 bar, to p2 = 3 bar, U2 – U1 = 400 kJ. Process 2-3: Constant pressure compression to V3 = 1 m3. Process 3-1: Adiabatic expansion, with W31 = 150 kJ. There are no significant changes in kinetic or potential energy. Determine the net work for the cycle, in kJ, and the heat transfers for...
A piston-cylinder assembly contains air modeled as an ideal gas with a constant specific heat ratio,...
A piston-cylinder assembly contains air modeled as an ideal gas with a constant specific heat ratio, k = 1.4. The air undergoes a power cycle consisting of four processes in series: Process 1-2: Constant-temperature expansion at 600 K from p1 = 0.5 MPa to p2 = 0.4 MPa. Process 2-3: Polutropic expansion with n = k to p3 = 0.3 MPa. Process 3-4: Constant-pressure compression to V4 = V1. Process 4-1: Constant volume heating. Sketch the cycle on a p-v...
Considering that 0.1 kg of gas contained within a piston-cylinder assembly undergoes a polytropic expansion process...
Considering that 0.1 kg of gas contained within a piston-cylinder assembly undergoes a polytropic expansion process with polytropic exponent n=2. The initial state has specific internal energy 10 J/kg, pressure 100 Pa, specific volume 2 m3/kg, and the final state has specific internal energy 5 J/kg and pressure 50 Pa. 1. Sketch the process on a P − V diagram 2. Determine the total heat transfer into or out of the gas during the process.
QUESTION 7 A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to form a thermodynamic cycle. Process 1->2: Constant volume cooling from P:-3.0bar to p1.5bar and X-0.728 to Process 2-->3: Constant pressure expansion Process 3-1: Polytropic compression with pv2 constant to the initial state Kinetic and potential energy effects are negligible. To help organize given information and fix states 1 and 3, consider sketching a Pv diagram Evaluate the net heat transfer for the cycle in...
Air in a piston-cylinder undergoes a cycle with the following processes: Process 1-2: Isobaric process from P = 0.1 MPa, T1 = 600K to T2 = 1200K Process 2-3: Isothermal process to state 3 where P3 = 0.05 MPa Process 3-4: Isochoric process to state 4 where P4 = 0.031 MPa Process 4-1: Polytropic process back to state 1 (a) Show the processes in a P-V plot showing the values. Also calculate or state the values of P. V. T...
One kg of air is in a piston-cylinder assembly. Air is modeled as an ideal gas with a constant specific heat ratio, k = 1.4. The air undergoes a power cycle consisting of four processes in series: Process 1-2: Constant-temperature expansion at 600 K from P, = 0.5 MPa to P2 = 0.4 MPa Process 2-3: Polytropic expansion with n=k to P; - 0.3 MPa Process 3-4: Constant-pressure compression to V4-V Process 4-1: Constant-volume heating. (a) Sketch the cycle on...
Problem # 2 135 Points Polytropic Processes A piston-cylinder undergoes a constant pressure expansion process followed by an adiabatic compression. The adiabatic compression can be modeled as a polytropic process PVn constant with a volume exponent n 1.4. At state 1 the pressure of the system is P1 60 psi, the volume is Vi 8.868 ft3 and the internal energy U 1630.6 BTU. The work output during the constant pressure process is W2-75.2 BTU and the heat transfer input for...
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