Within the cylinder piston system, R134a is 5 kg filled. The piston is free to move,...
Within the cylinder piston system, R134a is 5 kg filled. The piston is free to move, and the initial condition is 800 kPa, 70'C. Obtain the heat transfer (kJ) released when the temperature of the later state reaches 15'C by releasing energy to the outside.
Homework Answers
Maybe the question is not complete so I am assuming the process to be isobaric.
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Within the cylinder piston system, R134a is 5 kg filled. The
piston is free to move,...
Consider the piston/cylinder arrangement shown in Fig1. A frictionless piston is free to move between two...
Consider the piston/cylinder arrangement shown in Fig1. A
frictionless piston is free to move between two sets of stops. When
3 the piston rests on the lower stops, the enclosed volume is 0.5
m3. When the piston reaches the upper stops, the volume is 0.8 m .
The cylinder initially contains water at 200 kPa, 60% quality. The
mass of the piston requires 600 kPa pressure to move it against the
outside ambient pressure.
a) When heat is transferred until...
Water is contained in a piston-cylinder device, where the piston can move in order to maintain...
Water is contained in a piston-cylinder device, where the piston can move in order to maintain a constant pressure of 300 kPa. Initially, the temperature of the water is 200 degrees Celcius. Heat is removed from the water until it reaches a quality of 0.1. Find the amount of heat transfer to achieve this, in kJ/kg. Answer value in kj/kg
0.4 kg of Refrigerant 134a initially fills a piston–cylinder device with a volume of 15 L...
0.4 kg of Refrigerant 134a initially fills a piston–cylinder device with a volume of 15 L at a pressure of 400 kPa. The cylinder is connected to a supply line through a valve. R-134a is flowing in the supply line at 900 kPa and 45°C. The valve is opened, and R-134a is allowed to enter the cylinder. The valve is closed when the volume of the cylinder is triple and the temperature in the cylinder reaches 15°C. During the process,...
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...
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
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...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually reaches the...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually reaches the...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually reaches the...
Consider the piston/cylinder arrangement shown in Fig1. A
frictionless piston is free to move between two sets of stops. When
3 the piston rests on the lower stops, the enclosed volume is 0.5
m3. When the piston reaches the upper stops, the volume is 0.8 m .
The cylinder initially contains water at 200 kPa, 60% quality. The
mass of the piston requires 600 kPa pressure to move it against the
outside ambient pressure.
a) When heat is transferred until...
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...
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
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...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually...
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