Close Window refrigerant at constant pressure until the cylinder 0.005106 m3 0.002506 m3
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.
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
Close Window to another question will save this response. Moving Question 15 of 18 Question 15 4 points Save Answer Refrigerant R-134a is condensed from saturated vapor to saturated liquid at constant pressure of 1017 kPa in a piston cylinder device. The following properties are known: v0.019952 m /kg, uj 250.97 kJ/kg, h1-271.31 kJ/kg v2 0.000872 m2/kg, u2 107.38 kJ/kg, h2108.28 kJ/kg Determine the boundary work done in kJ/kg: <Question 15 of 18 A Moving to another question will save...
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.
A closed container contains 1 lb of Refrigerant 22 at temperature 100°F and pressure of 65 lbf/in. The refrigerant is heated up until it reaches the temperature of 120°F. 1) Determine the pressure [lbf/in2] in the final state. (100 points) 2) Show the process schematically in a T-v and a p-v diagram with all the necessary features. (50 points) 3) Calculate the heat transfer [Btu] during the process. (150 points) 4 ) Calculate the work [Btu] if the refrigerant at...
A 0.7-m3 rigid tank contains refrigerant-134a initially at 160 kPa and 40 percent quality. Heat is now transferred to the refrigerant until the pressure reaches 600 kPa. Determine the amount of heat transferred.
Problem 3 Ten kilograms of refrigerant-134a fill a weighted piston-cylinder container with the volume of 1.595 mat a temperature of -26 C. The container is now heated until the temperature is 90 'C. Determine the final volume of the refrigerant-134a. R-134a -26°C 10 kg 1.595 m3
A piston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kPa. Heat is transferred at constant pressure until the temperature reaches 350°C. Determine: (f) The final mass of the water. H20 P 800 kPa (g) the total change in enthalpy (AH)
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...
Thermodynamics A piston-cylinder system contains 0.005 m3 of liquid water and 0.8 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200ºC. a- Determine the initial thermodynamic state of the system. b- Find the initial temperature of water. c- Calculate the total mass of water in the cylinder. d- Find the final volume of the system. e- Sketch the above thermodynamic process on a P-V phase diagram.