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A piston-and-cylinder device contains 10 kmol of n-pentane at-35.5°C and 100 bar. Slowly the piston is...
A frictionless piston-cylinder device contains air at 300 K and 1 bar and is heated until...
A frictionless piston-cylinder device contains air at 300 K and 1 bar and is heated until its volume doubles and the temperature reaches 600 K. Answer the following: A. You are interested in studying the air in the piston-cylinder device as a closed system. Draw a schematic of your device and the boundary that defines your system. Assume the cylinder is in horizontal position. B. Determine the final pressure of the air at the end of the process, in bar....
A piston-cylinder device contains water which is initially at 100 C and 20 bar. It undergoes...
A piston-cylinder device contains water which is initially at 100 C and 20 bar. It undergoes two processes. The first process is isothermal and the second process is constant volume. The final condition is a saturated vapour at 2 bar. Calculate heat transfer and work (both in kJ/kg) for each process.
A 0.073-m3 piston-cylinder device contains 0.15 kg of Argon. Weights are placed on top of the...
A 0.073-m3 piston-cylinder device contains 0.15 kg of Argon. Weights are placed on top of the piston so that the initial pressure inside the cylinder is at 335 kPa. Now weights are removed one-by-one until the final volume is 3.00 times that of the initial volume. During this process, the argon's temperature is maintained constant. Determine the final pressure in the device. Round your answers to one decimal place. kPa
A frictionless vertical piston-cylinder device contains 3 kg of H2O initially at T1 = 180°C and...
A frictionless vertical piston-cylinder device contains 3 kg of H2O initially at T1 = 180°C and p1 = 50 bar. The device is heated until the temperature is T2 = 400°C. Assume a quasiequillibrium process which occurs slowly with no acceleration as the piston moves. Kinetic and potential energy effects are negligible. Determine: a. work (kJ) during process (indicate magnitude and direction) b. heat transfer (kJ) during process (indicate magnitude and direction)
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of...
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of Refrigerant-22. Initially 4 kg of the refrigerant is in the liquid state, and the temperature is -10 C. Now heat is transferred slowly to the refrigerant until it hits the stops, at which point the volume is 200 liters. Determine a) The temperature when the piston first hits the stops b) The work done during this process c) Show this process on a P-v...
A piston–cylinder device initially contains 0.6 m3 of saturated water vapor at 250 kPa. At this...
A piston–cylinder device initially contains 0.6 m3 of saturated water vapor at 250 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such that a pressure of 300 kPa is required to move it. Heat is now slowly transferred to the steam until the volume becomes 1.5 m3. Use the data from the steam tables. a) Determine the final temperature. b) Determine the work done during this process. c)...
A piston cylinder device contains 5 kg nitrogen. The pressure inside the system is 100 kPa, and...
A piston cylinder device contains 5 kg nitrogen. The pressure inside the system is 100 kPa, and the temperature is 17oC. The relationship between pressure and volume is PV3 = C. If a process results in a volume reduction of 2x, calculate the work and heat transfer occurring during the process.
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the...
A piston–cylinder device initially contains air at 150 kPa and 27 °C. In this state, the piston is resting on a pair of stops, and the enclosed volume is 400 litres. The mass of the piston is such that a 200 kPa pressure is required to move it. The air is now heated until its volume has doubled. Sketch the process on a P-V diagram and determine (a) the mass of air and the final temperature, (b) the work done...
(a) An insulated piston cylinder device contains 5 L of saturated liquid water at a constant...
(a) An insulated piston cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 kPa. The cylinder was equipped with the electric heater inside it. The liquid is heated at constant pressure until it becomes saturated vapour. Determine the entropy change of the water during this process in kJ/K. (10 Marks) (b) A stream of refrigerant R134a enters a steady flow device at 100 kPa, 50 °C at a rate of 1 kg/s. Two streams...
1-A piston-cylinder device with a set of stops contains 10 kg of refrigerant-134a. Initially, 8 kg...
1-A piston-cylinder device with a set of stops contains 10 kg of refrigerant-134a. Initially, 8 kg of the refrigerant is in the liquid form, and the temperature is 8°C. Now heat is transferred slowly to the refrigerant until the piston hits the stops, at which point the volume is 400 L. Determine (a) The temperature when the piston first hits the stops and (b) The work done during this expansion process. Also, show the process on a P-V diagram.
A 0.073-m3 piston-cylinder device contains 0.15 kg of Argon. Weights are placed on top of the piston so that the initial pressure inside the cylinder is at 335 kPa. Now weights are removed one-by-one until the final volume is 3.00 times that of the initial volume. During this process, the argon's temperature is maintained constant. Determine the final pressure in the device. Round your answers to one decimal place. kPa
A frictionless vertical piston-cylinder device contains 3 kg of H2O initially at T1 = 180°C and p1 = 50 bar. The device is heated until the temperature is T2 = 400°C. Assume a quasiequillibrium process which occurs slowly with no acceleration as the piston moves. Kinetic and potential energy effects are negligible. Determine: a. work (kJ) during process (indicate magnitude and direction) b. heat transfer (kJ) during process (indicate magnitude and direction)
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of Refrigerant-22. Initially 4 kg of the refrigerant is in the liquid state, and the temperature is -10 C. Now heat is transferred slowly to the refrigerant until it hits the stops, at which point the volume is 200 liters. Determine a) The temperature when the piston first hits the stops b) The work done during this process c) Show this process on a P-v...
(a) An insulated piston cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 kPa. The cylinder was equipped with the electric heater inside it. The liquid is heated at constant pressure until it becomes saturated vapour. Determine the entropy change of the water during this process in kJ/K. (10 Marks) (b) A stream of refrigerant R134a enters a steady flow device at 100 kPa, 50 °C at a rate of 1 kg/s. Two streams...
1-A piston-cylinder device with a set of stops contains 10 kg of refrigerant-134a. Initially, 8 kg of the refrigerant is in the liquid form, and the temperature is 8°C. Now heat is transferred slowly to the refrigerant until the piston hits the stops, at which point the volume is 400 L. Determine (a) The temperature when the piston first hits the stops and (b) The work done during this expansion process. Also, show the process on a P-V diagram.
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