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(10 ponts) A piston-cylinder that has a piston initially resting on top of a set of...
4). A piston cylinder device whose piston is resting on a set of stops contains 2kg...
4). A piston cylinder device whose piston is resting on a set of stops contains 2kg of Helium initially at 27°C and 100 kPa. The mass of the piston plus the atmospheric pressure effects is such that 500 kPa of gas pressure is required to raise it. Determine how much heat must be transferred to the helium to start raising? For He: R 2.0769 J/kg K C,-3.1156 kJkgK C,-5.1926 kJkg.K
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)...
Consider a piston cylinder with a set of stops as illustrated in Figure Question 4 filled...
Consider a piston cylinder with a set of stops as illustrated in Figure Question 4 filled with CO2. Initially, the pressure, temperature and volume of the CO2 is 128 kPa, 135°C and 0.038 m', respectively. The piston cylinder then undergoes the polytropic expansion until the piston head reaches the set of stops. At this position, the pressure and temperature of the CO2 is 87 kPa and 68°C, respectively. The heat is then added to the CO2 until the temperature reaches...
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...
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.
1. Question 4-7 from Thermodynamics ed. 7: A piston- cylinder device initially contains 0.07 m' of...
1. Question 4-7 from Thermodynamics ed. 7: A piston- cylinder device initially contains 0.07 m' of nitrogen gas at 130 kPa and 180 C. The nitrogen is now expanded to a pressure of 80 kPa polytropically with a polytropic exponent whose value is equal to the specific heat ratio (called isentropic expansion). Determine the final temperature and the boundary work done during this process.
A weighted piston (total mass of 16.8 kg), resting on stops in a cylinder (radius of 0.05 m) divi...
A weighted piston (total mass of 16.8 kg), resting on stops in a cylinder (radius of 0.05 m) divides a container into two regions. 0.075 kg of saturated liquid water at 50 "C is contained beneath the piston. The rest of the cylinder and container is evacuated. Hea s applied to the water ї he son s te orof sto sam moved a distance (y) of 0.6 m. As the piston reaches the mouth of the cylinder, the hermetic seal...
Helium gas at 105.0 kPa and 309.0K is located within a cylinder with a piston. Initially...
Helium gas at 105.0 kPa and 309.0K is located within a cylinder with a piston. Initially the gas occupies 0.4000 m. While a constant force, F, is applied to the end of the piston so that the pressure inside the cylinder is held constant at 105.0 kPa, 5090.0 J of heat is transferred to the helium gas. The specific enthalpy of helium gas is given by the approximate relation: (kJ/mol) = 0.02087(K) Q=5090.0J Final Conditions P2 = 105.0 kPa Initial...
A cylinder of monatomic ideal gas is sealed in a cylinder by a piston. Initially, the...
A cylinder of monatomic ideal gas is sealed in a cylinder by a piston. Initially, the gas occupies a volume of 2.50 L and the pressure is initially 125 kPa. The cylinder is placed in an oven that maintains the temperature at a constant value. 80.0 J of work is then done on the piston, compressing the gas (in other words, the gas does -80 J of work). The work is done very slowly so that the gas maintains a...
Required information A piston-cylinder device initially contains 0.6 m3 of saturated water vapor at 250 kPa....
Required information 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 1.3 m3. Use the data from the steam tables. Determine the final temperature. (You must provide an answer before moving on...
4). A piston cylinder device whose piston is resting on a set of stops contains 2kg of Helium initially at 27°C and 100 kPa. The mass of the piston plus the atmospheric pressure effects is such that 500 kPa of gas pressure is required to raise it. Determine how much heat must be transferred to the helium to start raising? For He: R 2.0769 J/kg K C,-3.1156 kJkgK C,-5.1926 kJkg.K
Consider a piston cylinder with a set of stops as illustrated in Figure Question 4 filled with CO2. Initially, the pressure, temperature and volume of the CO2 is 128 kPa, 135°C and 0.038 m', respectively. The piston cylinder then undergoes the polytropic expansion until the piston head reaches the set of stops. At this position, the pressure and temperature of the CO2 is 87 kPa and 68°C, respectively. The heat is then added to the CO2 until the temperature reaches...
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.
1. Question 4-7 from Thermodynamics ed. 7: A piston- cylinder device initially contains 0.07 m' of nitrogen gas at 130 kPa and 180 C. The nitrogen is now expanded to a pressure of 80 kPa polytropically with a polytropic exponent whose value is equal to the specific heat ratio (called isentropic expansion). Determine the final temperature and the boundary work done during this process.
A weighted piston (total mass of 16.8 kg), resting on stops in a cylinder (radius of 0.05 m) divides a container into two regions. 0.075 kg of saturated liquid water at 50 "C is contained beneath the piston. The rest of the cylinder and container is evacuated. Hea s applied to the water ї he son s te orof sto sam moved a distance (y) of 0.6 m. As the piston reaches the mouth of the cylinder, the hermetic seal...
Helium gas at 105.0 kPa and 309.0K is located within a cylinder with a piston. Initially the gas occupies 0.4000 m. While a constant force, F, is applied to the end of the piston so that the pressure inside the cylinder is held constant at 105.0 kPa, 5090.0 J of heat is transferred to the helium gas. The specific enthalpy of helium gas is given by the approximate relation: (kJ/mol) = 0.02087(K) Q=5090.0J Final Conditions P2 = 105.0 kPa Initial...
Required information 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 1.3 m3. Use the data from the steam tables. Determine the final temperature. (You must provide an answer before moving on...
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