Please write equations clearly and table numbers
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Please write equations clearly and table numbers
Refrigerant R-134A is trapped inside a piston-cylinder assembly. The...
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,...
Eight (8) kilogram of saturated vapor of refrigerant R-134a is contained in a closed frictionless piston-cylinder...
Eight (8) kilogram of saturated vapor of refrigerant R-134a is contained in a closed frictionless piston-cylinder device at a pressure of 200 kPa. Heat is then transferred to the refrigerant. At the end of the process, the refrigerant has a temperature of 70 °C. Determine the amount of heat that is transferred during the process. Also, show the process on a T-v diagram with respect to the saturated liquid and vapor lines. (35 points).
Air is trapped in a piston cylinder arrangement. The air expands from a temperature of 60...
Air is trapped in a piston cylinder arrangement. The air expands from a temperature of 60 C and a pressure of 280 KPa to a pressure of 140 KPa. During the process, 30 KJ/Kg of work is done and 14 KJ/Kg of heat is removed. The initial volume is 0.00878 m^3. a) What is the mass of the air? b) What is the temperature change during this process? c) What is the entropy change during this process? d) Does the...
Refrigerant 22 undergoes a constant-pressure process within a piston–cylinder assembly from saturated vapor at 3.0 bar...
Refrigerant 22 undergoes a constant-pressure process within a piston–cylinder assembly from saturated vapor at 3.0 bar to a final temperature of 30°C. Kinetic and potential energy effects are negligible. Evaluate the work and the heat transfer, each in kJ per kg of refrigerant.
fast please 20 min 0.05 m3 of saturated vapor refrigerant-134a is contained in an insulated piston-...
fast please 20 min
0.05 m3 of saturated vapor refrigerant-134a is contained in an insulated piston- cylinder device at 2500 kPa pressure. The refrigerant is now allowed to expand in a reversible manner until the pressure drops to 400 kPa. Determine: (a) the final temperature in the cylinder, and (b) the work done by the refrigerant. . Paragraph BIE
QUESTION 3 A 0.25m of saturated liquid refrigerant-134a at 80°C is contained in frictionless insulated piston-cylinder...
QUESTION 3 A 0.25m of saturated liquid refrigerant-134a at 80°C is contained in frictionless insulated piston-cylinder device as shown in Figure Q2(b). A paddle-wheel is placed inside the cylinder chamber to stir the refrigerant-134a and the paddle wheel transfer a total work of 245 kJ to the fluid. Moreover, a 440 V and 9 amp of resistor is also placed inside the cylinder chamber to heat the refrigerant-134a. With the aid of a P-V diagram, determine the time taken for...
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compres...
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compression process (during which PV1.30-constant) to a final state where the temperature is 200 °C. The specific heats are assumed to be constant while Tsur - 15 C a) Prove that the gas, at state 1, can be treated as an ideal gas. b) Find the pressure and volume at state 2 c) Find the heat transfer, in kJ. d) Find the...
An insulated piston-cylinder device contains 0.05 m3 of saturated R-134a vapor at 0.8 MPa. The refrigerant...
An insulated piston-cylinder device contains 0.05 m3 of saturated R-134a vapor at 0.8 MPa. The refrigerant is now allowed to expand in a reversible manner (i.e. isentropic) until the pressure drops to 0.4 MPa. Determine (a) the final temperature in the cylinder and (b) the work done by the refrigerant.
Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then...
Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the quality increases to 45%, what is the change in volume per one unit of mass (m3/kg)? The piston is assumed to move freely but it is sealed tight that does not allow mass exchange. Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the...
1.) a) Water in a piston–cylinder assembly undergoes a constant-pressure process at 30 bar from T1...
1.) a) Water in a piston–cylinder assembly undergoes a constant-pressure process at 30 bar from T1 = 255.1°C to saturated vapor. Determine the work for the process, in kJ per kg of water. b) A piston-cylinder assembly contains 4.4 kg of water at 238oC and 3 bar. The water is compressed to a saturated vapor state where the pressure is 53.9 bar. During compression, there is a heat transfer of energy from the water to its surroundings having a magnitude...
Eight (8) kilogram of saturated vapor of refrigerant R-134a is contained in a closed frictionless piston-cylinder device at a pressure of 200 kPa. Heat is then transferred to the refrigerant. At the end of the process, the refrigerant has a temperature of 70 °C. Determine the amount of heat that is transferred during the process. Also, show the process on a T-v diagram with respect to the saturated liquid and vapor lines. (35 points).
fast please 20 min
0.05 m3 of saturated vapor refrigerant-134a is contained in an insulated piston- cylinder device at 2500 kPa pressure. The refrigerant is now allowed to expand in a reversible manner until the pressure drops to 400 kPa. Determine: (a) the final temperature in the cylinder, and (b) the work done by the refrigerant. . Paragraph BIE
QUESTION 3 A 0.25m of saturated liquid refrigerant-134a at 80°C is contained in frictionless insulated piston-cylinder device as shown in Figure Q2(b). A paddle-wheel is placed inside the cylinder chamber to stir the refrigerant-134a and the paddle wheel transfer a total work of 245 kJ to the fluid. Moreover, a 440 V and 9 amp of resistor is also placed inside the cylinder chamber to heat the refrigerant-134a. With the aid of a P-V diagram, determine the time taken for...
Nitrogen in a piston cylinder device occupies 0.5 m3 at 100 kPa and 20 °C. It undergoes a compression process (during which PV1.30-constant) to a final state where the temperature is 200 °C. The specific heats are assumed to be constant while Tsur - 15 C a) Prove that the gas, at state 1, can be treated as an ideal gas. b) Find the pressure and volume at state 2 c) Find the heat transfer, in kJ. d) Find the...
Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the quality increases to 45%, what is the change in volume per one unit of mass (m3/kg)? The piston is assumed to move freely but it is sealed tight that does not allow mass exchange. Refrigerant 134a in a cylinder-piston assembly is at 240 kPa with a quality 15% and then as a result of heat added the...
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