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A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where...
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is...
A gas undergoes a process in a piston–cylinder assembly during which the pressure-specific volume relation is pv1.1 = constant. The mass of the gas is 0.4 lb and the following data are known: p1 = 160 lbf/in.2, V1 = 1 ft3, and p2 = 390 lbf/in.2 During the process, heat transfer from the gas is 2.1 Btu. Kinetic and potential energy effects are negligible. Determine the change in specific internal energy of the gas, in Btu/lb.
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.
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.
A cylinder-piston sistem contains CO2. The sistem experiments an initial expansion where P1 = 20 lbf...
A cylinder-piston sistem contains CO2. The sistem experiments an initial expansion where P1 = 20 lbf / in2 and V1 = 0.50 ft3 till the final state where P2= 5 lbf / in2 and V2= 2.50 ft3. The relation between pressure and volumen during the process is P = A + BV, where A and B are constants. a) For the CO2, evaluate the work done on ft / lbf and Btu b) Calculate the values of A and B...
Propane is compressed from an initial state with a pressure of 100 lbf/in2 and a quality...
Propane is compressed from an initial state with a pressure of 100 lbf/in2 and a quality of 0.40 to a final saturated liquid state with a temperature is 50°F. Is it possible for this process to occur adiabatically? Justify your answer. Air is contained in a rigid, well-insulated container of volume 3 m3. The air undergoes a process from an initial state with a pressure of 200 kPa and temperature of 300 K. During the process, the air receives 720...
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...
Problem 3.052 A piston–cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F....
Problem 3.052 A piston–cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid–vapor mixture with a quality of 40%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu.
Problem 3.052 A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F....
Problem 3.052 A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 50%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu
A gas undergoes a process from state 1, where p1 = 60 lbf/in.2, v1 = 6.0...
A gas undergoes a process from state 1, where p1 = 60 lbf/in.2, v1 = 6.0 ft3/lb, to state 2 where p2 = 85.1 lbf/in.2, according to pv1.3 = constant. The relationship between pressure, specific volume, and internal energy is u = (0.2651)pv - 95.436 where p is in lbf/in.2, v is in ft3/lb, and u is in Btu/lb. The mass of gas is 10 lb. Neglecting kinetic and potential energy effects, determine the heat transfer, in Btu. Entry field...
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 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 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...
Problem 3.052 A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 450°F. The water undergoes two processes in series: a constant-pressure process followed by a constant volume process. At the end of the constant-volume process, the temperature is 300°F and the water is a two-phase liquid-vapor mixture with a quality of 50%. Neglect kinetic and potential energy effects. Determine the work and heat transfer for each process, all in Btu
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