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3.13 A two step process for a control mass A piston/cylinder device contains 0.2 kg water at 1000...
A piston-cylinder contains 0.1 kg of water at 1000 kPa and 500 o C. The water is...
A piston-cylinder contains 0.1 kg of water at 1000 kPa and 500 o C. The water is now cooled with a constant force on the piston until it reaches half the initial volume. After it cools to 25 oC while the piston is against the stops. Find the final water pressure (in kPa) and the work in the overall process (in kJ).
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)...
A piston –cylinder device initially contains 0.2 kg of steam at 1400 kPa and 350C. The...
A piston –cylinder device initially contains 0.2 kg of steam at 1400 kPa and 350C. The steam is then cooled at constant pressure until it is at 200C. (a) Determine the volume change of the cylinder during this process using the compressibility factor. (b) Compare the result in part (a) to that obtained using actual property values.
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg...
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg of air, as shown in the figure. The air initially at 100 kPa and 20°C, is heated to 450 kPa at which the piston begins to move. The process continues until the final volume is 12 times the initial volume. Calculate (a) the final temperature in kb) the work done in kJ. (the total heat transfer in this process Use the following properties for...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
Patm 100 kPa 1 kg of water is contained in a frictionless piston cylinder device fitted...
Patm 100 kPa 1 kg of water is contained in a frictionless piston cylinder device fitted with two stops. The mass of the piston is 50 kg and the system is open to the atmosphere with Ptm - 100 kPa. The initial temperature of the system Ti Tantal 105 'C and the initial volume V1 Vinitial 1 m3 When the piston reaches the second stop, the volume of the water is doubled (V4Vinal2 Vinitial). Heat is EE transferred between the...
QUESTION 24 A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree...
QUESTION 24
A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3 the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. Determine (a) the final pressure and temperature...
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...
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of...
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of Refrigerant-22. Initially 4 kg of the refrigerant is in the liquid state, and the temperature is -10 C. Now heat is transferred slowly to the refrigerant until it hits the stops, at which point the volume is 200 liters. Determine a) The temperature when the piston first hits the stops b) The work done during this process c) Show this process on a P-v...
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...
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg of air, as shown in the figure. The air initially at 100 kPa and 20°C, is heated to 450 kPa at which the piston begins to move. The process continues until the final volume is 12 times the initial volume. Calculate (a) the final temperature in kb) the work done in kJ. (the total heat transfer in this process Use the following properties for...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
Patm 100 kPa 1 kg of water is contained in a frictionless piston cylinder device fitted with two stops. The mass of the piston is 50 kg and the system is open to the atmosphere with Ptm - 100 kPa. The initial temperature of the system Ti Tantal 105 'C and the initial volume V1 Vinitial 1 m3 When the piston reaches the second stop, the volume of the water is doubled (V4Vinal2 Vinitial). Heat is EE transferred between the...
QUESTION 24
A piston-cylinder device contains 50 kg of water at 250 kPa and 25 degree C. The cross-sectional area of the piston is 0.1 m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3 the piston reaches a linear spring whose spring constant is 100 kN/m. More heat is transferred to the water until the piston rises 20 cm more. Determine (a) the final pressure and temperature...
Problem 5 A piston-cylinder device, shown below, with a set of stops contains 5 kg of Refrigerant-22. Initially 4 kg of the refrigerant is in the liquid state, and the temperature is -10 C. Now heat is transferred slowly to the refrigerant until it hits the stops, at which point the volume is 200 liters. Determine a) The temperature when the piston first hits the stops b) The work done during this process c) Show this process on a P-v...
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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