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Thermodynamics question
Initially, 0.05kg of air is contained in a piston cylinder device at 200 °C...
Air is contained in a piston cylinder device that has a resistance heater inside. The atmosphere...
Air is contained in a piston cylinder device that has a
resistance heater inside. The atmosphere exerts a pressure of 100
kpa on the piston of which it has a mass of 45 kg and a transverse
area of 0.9 m². An electric current passes through the resistance
of the air volume slowly increases by 0.45 m³ while the pressure
remains constant. The mass of the air is 0.27 kg and its specific
internal energy increases 42 kJ / kg,...
Thermodynamics 5. 0.5kg of ammonia is contained in a piston-cylinder assembly, initially at Ti-20°C and a...
Thermodynamics
5. 0.5kg of ammonia is contained in a piston-cylinder assembly, initially at Ti-20°C and a quality of 25%. As the ammonia is slowly heated to a final state, where T2 20°C, P2 = 0.6MPa, its pressure varies linearly with specific volume. For the ammonia, (a) show the process on a P o diagram and (b) evaluate the work and heat transfer, each in kJ.
Question 1 Air is contained in a vertical piston-cylinder assembly fitted with an electrical heater. The...
Question 1 Air is contained in a vertical piston-cylinder assembly fitted with an electrical heater. The atmospheric pressure is 100 kPa and piston has a mass of 50 kg and a face area of 0.1 m . Electric current passes through the heater, and the volume of air slowly increases by 0.045 m. The mass of the air is 0.3 kg and its specific internal energy increases by 42.2 kJ/kg. Assume the assembly (including the piston) is insulated and neglect...
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...
Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 200°C....
Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 200°C. The water is slowly heated at constant pressure to a final state. The heat transfer for the process is 3260 kJ and kinetic and potential energy effects are negligible. Determine the final volume, in m3, and the work for the process, in kJ.
2 A frictionless piston-cylinder device initially contains 0.5-m2 of air at 200 kPs and 207℃·luri...
2 A frictionless piston-cylinder device initially contains 0.5-m2 of air at 200 kPs and 207℃·luring the process. Air is stirred by a paddle wheel at į00 kJ while the pressure remains constant during the process. A heat loss of 85 kJ occurs and an electric energy of 50 kJ through a resistor is placed in the eylinder (a) Write the assumptions (b) Show the 1 law of thermodynamies for the control volume (c) Determine the mass of air in the...
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)
Air in a cylinder-Piston device undergoes a cyclic process. Initially, the air is at P-5 [MPa)...
Air in a cylinder-Piston device undergoes a cyclic process. Initially, the air is at P-5 [MPa) and T-350 [C]. Process 1 to 2 is an isothermal expansion from 5 (MPa) to 1 [MPa). Process 2 to 3 is a polytropie compression to 5 [MPa) with a polytropic exponent n=1.3. The cycle gets completed by a constant pressure process from the state 3 to 1. Air properties are R 0.287 [Kj/Kg. K] and k=1.4 and the mass of air in cylinder...
Air contained within a piston-cylinder assembly is slowly heated. As shown below, during this process the...
Air contained within a piston-cylinder assembly is slowly
heated. As shown below, during this process the pressure first
varies linearly with volume and then remains constant. Determine
the total work, in kJ.
5. Air contained in a piston-cylinder assembly is slowly heat pressure first varies linearly and then is constant. Determ 150 100 LPa 50 003 0.045 007 V(m) 7. Carbon dioxide gas contained within a piston-cy
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given...
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given by pı = 20 MPa, T = 1000 K. the process continues until the pressure drops to 2 MPa. The original volume of the air is V1 = 1 m². Determine the following: a. the mass of the air in the system, in kg. b. the final density of the air, in kg/m". Remember, Rair = 0.287 kJ/kg-K c. the final volume of the...
Air is contained in a piston cylinder device that has a
resistance heater inside. The atmosphere exerts a pressure of 100
kpa on the piston of which it has a mass of 45 kg and a transverse
area of 0.9 m². An electric current passes through the resistance
of the air volume slowly increases by 0.45 m³ while the pressure
remains constant. The mass of the air is 0.27 kg and its specific
internal energy increases 42 kJ / kg,...
Thermodynamics
5. 0.5kg of ammonia is contained in a piston-cylinder assembly, initially at Ti-20°C and a quality of 25%. As the ammonia is slowly heated to a final state, where T2 20°C, P2 = 0.6MPa, its pressure varies linearly with specific volume. For the ammonia, (a) show the process on a P o diagram and (b) evaluate the work and heat transfer, each in kJ.
Question 1 Air is contained in a vertical piston-cylinder assembly fitted with an electrical heater. The atmospheric pressure is 100 kPa and piston has a mass of 50 kg and a face area of 0.1 m . Electric current passes through the heater, and the volume of air slowly increases by 0.045 m. The mass of the air is 0.3 kg and its specific internal energy increases by 42.2 kJ/kg. Assume the assembly (including the piston) is insulated and neglect...
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...
2 A frictionless piston-cylinder device initially contains 0.5-m2 of air at 200 kPs and 207℃·luring the process. Air is stirred by a paddle wheel at į00 kJ while the pressure remains constant during the process. A heat loss of 85 kJ occurs and an electric energy of 50 kJ through a resistor is placed in the eylinder (a) Write the assumptions (b) Show the 1 law of thermodynamies for the control volume (c) Determine the mass of air in the...
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)
Air in a cylinder-Piston device undergoes a cyclic process. Initially, the air is at P-5 [MPa) and T-350 [C]. Process 1 to 2 is an isothermal expansion from 5 (MPa) to 1 [MPa). Process 2 to 3 is a polytropie compression to 5 [MPa) with a polytropic exponent n=1.3. The cycle gets completed by a constant pressure process from the state 3 to 1. Air properties are R 0.287 [Kj/Kg. K] and k=1.4 and the mass of air in cylinder...
Air contained within a piston-cylinder assembly is slowly
heated. As shown below, during this process the pressure first
varies linearly with volume and then remains constant. Determine
the total work, in kJ.
5. Air contained in a piston-cylinder assembly is slowly heat pressure first varies linearly and then is constant. Determ 150 100 LPa 50 003 0.045 007 V(m) 7. Carbon dioxide gas contained within a piston-cy
5. Air expands isothermally constant temperature) in a closed, piston-cylinder device. The original state is given by pı = 20 MPa, T = 1000 K. the process continues until the pressure drops to 2 MPa. The original volume of the air is V1 = 1 m². Determine the following: a. the mass of the air in the system, in kg. b. the final density of the air, in kg/m". Remember, Rair = 0.287 kJ/kg-K c. the final volume of the...
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