A water-vapor mixture with a mass of 0.5 kg of at a quality of 50% is...
A water-vapor mixture with a mass of 0.5 kg of at a quality of 50% is initially contained in a piston-cylinder assembly. The piston is unrestrained and it is weighted such that it maintains a constant pressure of 500 kPa inside the cylinder. Heat is transferred to the cylinder from a thermal energy source until the steam reaches saturated vapor conditions. Determine: (a) the total heat transfer, (b) the total amount of entropy production for the entire process, (c) Indicate whether this process is feasible and why?
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A water-vapor mixture with a mass of 0.5 kg of at a quality of
50% is...
Here is my issue with this problem. For part B, I believe I am using the...
Here is my issue with this problem. For part B, I believe I am
using the right method; for S2-S1 using table values I am getting
0.54336 kJ/K. The formula for total S is supposed to be
S total = (S2-S1) - Q/T. But for Q/T I am getting a little over
the other value giving me a negative answer. It just is not seeming
right. This when plugged in, doesn not give 0.056 kJ/K which is
apparently correct. Someone...
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston-...
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston- cylinder device at 125 kPa. Initially. 3 kg of the water is in the liquid phase and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 10%. We denote the...
A mass of 5.5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder...
A mass of 5.5 kg of saturated liquid-vapor mixture of water is contained in a piston-cylinder at 101.325 kPa. Initially, 2.3 kg of the water is in the liquid phase and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 21 percent. Determine: a) the initial...
1. A saturated water liquid-vapor mixture with a total mass of 1.3 kg is contained in...
1. A saturated water liquid-vapor mixture with a total mass of 1.3 kg is contained in a piston-cylinder assembly, with the piston initially placed so that the volume of the mix- ture is 1.5 m. The initial temperature of the mixture is 30°C. The piston is then pushed inward until the volume is halved, and the container is heated until the pressure is 400 kPa. Determine Sherleader 306 V Tup V 400 kPa (a) the quality of the mixture for...
A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 373K. During a constant...
A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 373K. During a constant pressure process, 600 kJ of heat is transferred to the surrounding air at 300K. Asa result, part of the water vapor contained in the cylinder condenses. Determine (1) the entropy change of the water, (2) the entropy change of the air (3) the total entropy generation during this process.
A two-phase, liquid-vapor mixture of H2O, initially at x = 30% and a pressure of 100 kPa, is...
A two-phase, liquid-vapor mixture of H2O, initially at x = 30% and a pressure of 100kPa, is contained in a piston-cylinder assembly, as shown in Fig. The mass of the pistonis 10kg, and its diameter is 15 cm. The pressure of the surroundings is 100kPa. As thewater is heated, the pressure inside the cylinder remains constant until the piston hits the stops. Heat transfer to the water continues at constant volume untilthe pressure is 150 kPa. Friction between the piston...
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)...
MEN215 Exam 1 S.. x ton... MEN215 Final Fall 57.5% 1 /3 Problem 1: 30 points Saturated water vapor at 180 "C is...
MEN215 Exam 1 S.. x ton... MEN215 Final Fall 57.5% 1 /3 Problem 1: 30 points Saturated water vapor at 180 "C is contained in a piston cylinder arrangement that has an initial volume of 0.025 m2. Heat is transferred and the steam expands in a polytropic process with n 1 until it reaches a pressure of 200 kPa. a) Find the amount of heat transferred in kl. b) Show the process path on a P-v diagram.
MEN215 Exam 1...
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...
Here is my issue with this problem. For part B, I believe I am
using the right method; for S2-S1 using table values I am getting
0.54336 kJ/K. The formula for total S is supposed to be
S total = (S2-S1) - Q/T. But for Q/T I am getting a little over
the other value giving me a negative answer. It just is not seeming
right. This when plugged in, doesn not give 0.056 kJ/K which is
apparently correct. Someone...
A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a piston- cylinder device at 125 kPa. Initially. 3 kg of the water is in the liquid phase and the rest is in the vapor phase. Heat is now transferred to the water, and the piston, which is resting on a set of stops, starts moving when the pressure inside reaches 300 kPa. Heat transfer continues until the total volume increases by 10%. We denote the...
1. A saturated water liquid-vapor mixture with a total mass of 1.3 kg is contained in a piston-cylinder assembly, with the piston initially placed so that the volume of the mix- ture is 1.5 m. The initial temperature of the mixture is 30°C. The piston is then pushed inward until the volume is halved, and the container is heated until the pressure is 400 kPa. Determine Sherleader 306 V Tup V 400 kPa (a) the quality of the mixture for...
A frictionless piston-cylinder device contains a saturated liquid-vapor mixture of water at 373K. During a constant pressure process, 600 kJ of heat is transferred to the surrounding air at 300K. Asa result, part of the water vapor contained in the cylinder condenses. Determine (1) the entropy change of the water, (2) the entropy change of the air (3) the total entropy generation during this process.
MEN215 Exam 1 S.. x ton... MEN215 Final Fall 57.5% 1 /3 Problem 1: 30 points Saturated water vapor at 180 "C is contained in a piston cylinder arrangement that has an initial volume of 0.025 m2. Heat is transferred and the steam expands in a polytropic process with n 1 until it reaches a pressure of 200 kPa. a) Find the amount of heat transferred in kl. b) Show the process path on a P-v diagram.
MEN215 Exam 1...
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...
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