A gas is contained in a vertical piston–cylinder assembly by a piston with a face area...
A gas is contained in a vertical piston–cylinder assembly by a piston with a face area of 40 in.2 and weight of 100 lbf. The atmosphere exerts a pressure of 14.7 lbf/in.2on top of the piston. A paddle wheel transfers 3 Btu of energy to the gas during a process in which the elevation of the piston increases by 1 ft. The change in internal energy of the gas is 2.12 Btu. The piston and cylinder are poor thermal conductors, and friction between them can be neglected. Determine the amount of energy transfer to the gas by the paddle wheel, in Btu.
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A gas is contained in a vertical piston–cylinder assembly by a
piston with a face area...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where D = 15 cm. A vertical shaft whose cross-sectional area is 0.8 cm is attached to the top of the piston. The total mass of the piston and shaft is 25 kg. While the gas is slowly heated, the internal energy of the gas increases by 0.1 k), the potential energy of the piston-shaft combination increases by 0.2 k), and a force of F...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm and a face area of 10 in2. The air initially occupies a volume of 30.6 in3 and has a specific internal energy of 225 BTU/lbm. The atmosphere exerts a pressure of 1 atm on the top of the piston. Heat transfer occurs slowly during the process between the air in the piston and the surroundings, and the volume of the air decreases to 15.0...
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...
Ammonia is contained in a piston-cylinder assembly. The ammonia undergoes a reversible, isobaric process from an...
Ammonia is contained in a piston-cylinder assembly. The ammonia undergoes a reversible, isobaric process from an initial pressure of 30 lbf/in2 and volume of 4 ft3/lb to a final temperature of 70° F. The mass of ammonia is 0.35 lb. Determine the amount of work done on the ammonia in Btu, the amount of heat transfer to the ammonia in Btu, and the temperature at which the heat transfer occurs in °F. Assume that the heat transfer occurs at a...
QUESTION 6 A 56.6 kg piston sits above a gas contained in a vertical piston-cylinder assembly....
QUESTION 6 A 56.6 kg piston sits above a gas contained in a vertical piston-cylinder assembly. The area of the piston face is 0.1 m2. The gas undergoes a process from state 1 to state 2 defined by the following diagram and given properties. Determine the work (kl) done by the gas. Note that the piston is free floating (no friction). 8 - 9.81 m/s2 Patm - 100 kPa V1 = 1.8 m V2 = 2.5 m2 Gas
Thermodynamics: Vertical shaft, piston and a gas, Determine heat transfer
Figure P2.70 shows a gas contained in a vertical piston-cylinder assembly. A vertical shaft whose cross-sectional area is 0.8 cm2 is attached to the top of the piston. The total mass of the piston and shaft is 25 kg. while the gas is slowly heated, the internal energy of the gas increases by 0.1 kJ, the potential energy of the piston-shaft combination increases by 0.2 kJ, and a force of 1334 N is exerted on the shaft as shown in...
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.
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor....
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 1 bar on the top of the piston, which has a mass of 45 kg and a face area of 0.09 m². Electric current passes through the resistor, and the volume of the air slowly increases by 0.45 m while its pressure remains constant. The mass of the air is 0.27 kg. and its specific internal energy increases...
Air is contained in a vertical piston-cylinder assembly such that the piston is in static...
Air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium The atmosphere exerts a pressure of 101 kPa on top of the 0.8 meter-diameter piston. The gage pressure of the air inside the cylinder is 1.2 kPa. Subsequently, a weight is placed on top of the piston, as shown below, causing the piston to descend until reaching a new static equilibrium position. At this position, the gage pressure of the air inside the cylinder is...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at p 2 bar to a final volume of V2 0.2 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated from heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. Piston-...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where D = 15 cm. A vertical shaft whose cross-sectional area is 0.8 cm is attached to the top of the piston. The total mass of the piston and shaft is 25 kg. While the gas is slowly heated, the internal energy of the gas increases by 0.1 k), the potential energy of the piston-shaft combination increases by 0.2 k), and a force of F...
A vertical piston-cylinder contains 1.5 lbm of air. The piston has a mass of 6 Ibm and a face area of 10 in2. The air initially occupies a volume of 30.6 in3 and has a specific internal energy of 225 BTU/lbm. The atmosphere exerts a pressure of 1 atm on the top of the piston. Heat transfer occurs slowly during the process between the air in the piston and the surroundings, and the volume of the air decreases to 15.0...
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...
QUESTION 6 A 56.6 kg piston sits above a gas contained in a vertical piston-cylinder assembly. The area of the piston face is 0.1 m2. The gas undergoes a process from state 1 to state 2 defined by the following diagram and given properties. Determine the work (kl) done by the gas. Note that the piston is free floating (no friction). 8 - 9.81 m/s2 Patm - 100 kPa V1 = 1.8 m V2 = 2.5 m2 Gas
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 1 bar on the top of the piston, which has a mass of 45 kg and a face area of 0.09 m². Electric current passes through the resistor, and the volume of the air slowly increases by 0.45 m while its pressure remains constant. The mass of the air is 0.27 kg. and its specific internal energy increases...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at p 2 bar to a final volume of V2 0.2 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated from heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. Piston-...
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