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Problem. A 5 L insulated cylinder is initially filled with water at 150 kPa. The water...
(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...
An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of...
An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 175 kPa. Water is stirred by a paddle wheel while a current of 8 A flows for 45 min through a-resistor placed in the water. If one-half of the liquid is evaporated during this constant pressure process and the paddle-wheel work amounts to 400 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines.
3. (5 pts) An insulated, vertical piston-cylinder device initially contains 2 kg of water at 70°C....
3. (5 pts) An insulated, vertical piston-cylinder device initially contains 2 kg of water at 70°C. The mass of the piston is such that it maintains a constant pressure of 400 kPa inside the cylinder. Water at 1000 kPa and 500°C is allowed to enter the cylinder from a supply line until the instant that the last. drop of liquid in the cylinder vaporizes. Determine the mass of the steam that has entered.
Problem 4-2-8 Water, at 150 kPa and 12 C, is heated in a mixing chamber, at...
Problem 4-2-8 Water, at 150 kPa and 12 C, is heated in a mixing chamber, at a rate of 5 kg/s, where it is mied with steam entering, at 150 kPa and 120 C. The mbture leaves the chamber at 150 kPa and 55 C. Heat is lost to the surrounding air at a rate of 3 kW Part A Determine the entropy generation rate(S)during mibing. Express your answer to three significant figures kW Submit Request Answer
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is...
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is heated at constant pressure until the temperature increased 66.5 Co. Calculate the change in entropy due to the heating process. 2. Determine if the process reversable, irreversible or impossible. 3. Plot the TS diagram showing all the states and numbers on it. 4.) A 0.5 kg of saturated water vapor at 300°C is heated in a piston-cylinder device. Now the steam expanded reversibly and...
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is...
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is heated at constant pressure until the temperature increased 66.5 Calculate the change in entropy due to the heating process. 2. Determine if the process reversable, irreversible or impossible. 3. Plot the TS diagram showing all the states and numbers on it. 4) A 0.5 kg of saturated water vapor at 300°C is heated in a piston-cylinder device. Now the steam expanded reversibly and isothermally...
Problem 6.024 SI Two kilograms of water contained in a piston-cylinder sembly, initially saturated vapor at...
Problem 6.024 SI Two kilograms of water contained in a piston-cylinder sembly, initially saturated vapor at 340 kPa, is condensed at constant pressure to saturated liquid. Consider an enlarged system consisting of the water and enough of the nearby surroundings that heat transfer occurs only at the ambient temperature of 25°C. Assume the state of the nearby surroundings does not change during the process, and ignore kinetic and potential energy effects For the enlarged system, determine the heat transfer, in...
2 kg of water is contained in a piston-cylinder setup. The water is initially at a...
2 kg of water is contained in a piston-cylinder setup. The water is initially at a quality of 0.7 and pressure of 300 kPa. The system is heated until the temperature is 200 °C. During this process, the piston is able to move such that the pressure is maintained at 300 kPa. Find the heat transfer in this process, using units of kJ
1 kg air is contained in an INSULATED piston-cylinder device. Initially, the temperature and pressure of the gas are T =...
1 kg air is contained in an INSULATED piston-cylinder device. Initially, the temperature and pressure of the gas are T = 300 K and P = 200 kPa respectively. Work is extracted from the gas until the pressure of the gas reaches to Pfinal. Calculate Pfinal according to the last digit of your student number. Students with “00” as the last digit should take Pfinal = 100 kPa and Students with “99” as the last digit should take Pfinal =...
Problem 1 (65 pts): The cylinder of a Diesel engine is initially filled with air at 100 kPa and 2...
Problem 1 (65 pts): The cylinder of a Diesel engine is initially filled with air at 100 kPa and 298 K (piston is at BDC). The air is then compressed isentropically with a compression ratio of 20. Fuel, n-dodecane, is then introduced and combusted with the air, which produces work output (i.e. pushes the piston back to BDC). At the end of the power stroke, the temperature of the combustion products is 1020 K. The amount of heat lost to...
(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...
An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 175 kPa. Water is stirred by a paddle wheel while a current of 8 A flows for 45 min through a-resistor placed in the water. If one-half of the liquid is evaporated during this constant pressure process and the paddle-wheel work amounts to 400 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines.
3. (5 pts) An insulated, vertical piston-cylinder device initially contains 2 kg of water at 70°C. The mass of the piston is such that it maintains a constant pressure of 400 kPa inside the cylinder. Water at 1000 kPa and 500°C is allowed to enter the cylinder from a supply line until the instant that the last. drop of liquid in the cylinder vaporizes. Determine the mass of the steam that has entered.
Problem 4-2-8 Water, at 150 kPa and 12 C, is heated in a mixing chamber, at a rate of 5 kg/s, where it is mied with steam entering, at 150 kPa and 120 C. The mbture leaves the chamber at 150 kPa and 55 C. Heat is lost to the surrounding air at a rate of 3 kW Part A Determine the entropy generation rate(S)during mibing. Express your answer to three significant figures kW Submit Request Answer
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is heated at constant pressure until the temperature increased 66.5 Co. Calculate the change in entropy due to the heating process. 2. Determine if the process reversable, irreversible or impossible. 3. Plot the TS diagram showing all the states and numbers on it. 4.) A 0.5 kg of saturated water vapor at 300°C is heated in a piston-cylinder device. Now the steam expanded reversibly and...
3.) A steam of 80% quality at 300 kPa and a mass of 3 Kg is heated at constant pressure until the temperature increased 66.5 Calculate the change in entropy due to the heating process. 2. Determine if the process reversable, irreversible or impossible. 3. Plot the TS diagram showing all the states and numbers on it. 4) A 0.5 kg of saturated water vapor at 300°C is heated in a piston-cylinder device. Now the steam expanded reversibly and isothermally...
Problem 6.024 SI Two kilograms of water contained in a piston-cylinder sembly, initially saturated vapor at 340 kPa, is condensed at constant pressure to saturated liquid. Consider an enlarged system consisting of the water and enough of the nearby surroundings that heat transfer occurs only at the ambient temperature of 25°C. Assume the state of the nearby surroundings does not change during the process, and ignore kinetic and potential energy effects For the enlarged system, determine the heat transfer, in...
2 kg of water is contained in a piston-cylinder setup. The water is initially at a quality of 0.7 and pressure of 300 kPa. The system is heated until the temperature is 200 °C. During this process, the piston is able to move such that the pressure is maintained at 300 kPa. Find the heat transfer in this process, using units of kJ
Problem 1 (65 pts): The cylinder of a Diesel engine is initially filled with air at 100 kPa and 298 K (piston is at BDC). The air is then compressed isentropically with a compression ratio of 20. Fuel, n-dodecane, is then introduced and combusted with the air, which produces work output (i.e. pushes the piston back to BDC). At the end of the power stroke, the temperature of the combustion products is 1020 K. The amount of heat lost to...
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