7–36 An insulated piston-cylinder device contains 0.05 mⓇ of saturated refrigerant- 134a vapor at 0.8-MPa pressure. The

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7 36 An Insulated Piston Cylinder Device Contains 0 05 M Of Saturated Refrigerant 134a Vapor At 0 8 Mpa Pressure The 1 (123.85 KiB) Viewed 128 times

solve 7-37 using EES application.
7–36 An insulated piston-cylinder device contains 0.05 mⓇ of saturated refrigerant- 134a vapor at 0.8-MPa pressure. The refrigerant is now allowed to expand in a reversible manner until the pressure drops to 0.4 MPa. Determine (a) the final temperature in the cylinder and (b) the work done by the refrigerant. R-134a 0.05 m 0.8 MPa FIGURE P7-36 7-37 Reconsider Prob. 7–36. Using appropriate software, evaluate and plot the work done by the refrigerant as a function of final pressure as it varies from 0.8 to 0.4 MPa. Compare the work done for this process to one for which the temperature is constant over the same pressure range. Discuss your results.