Question

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 diagram V L

Answer 1

Solution mass Rerigenand Piston 22 assenmble yindu ka Tnitially Tempenatut -oC in Juqid phage 4k Mass phas ; Mass Vapo Nou drom saturated Propenty tabu dR-22 -10"c SaduTadion Ress ad ressun ot bar - 3.S485 P. Jubuid and Vapor 8pedc volume at soturadted O.7606 KI m initialy R- 22 at 3 4 X o.760CX lo V, = 0 070S2 yunde voluma heat supply did inereope until urhen ure Nou ushile Pressur and Temperadu 'Tvaddas the touches emainy Constant hits Stops

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