P.2 2-chamber Piston Cylinder Assembly The figure below depicts a rigid cylinder containing water (steam) and a perfect

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P 2 2 Chamber Piston Cylinder Assembly The Figure Below Depicts A Rigid Cylinder Containing Water Steam And A Perfect 1 (173.4 KiB) Viewed 32 times

P.2 2-chamber Piston Cylinder Assembly The figure below depicts a rigid cylinder containing water (steam) and a perfect gas. The steam and gas are separated by a frictionless, insulated piston. Because the piston is frictionless, the pressures of the steam and perfect gas are always equal, but because it is insulated the temperatures can be different and no heat transfer occurs across it. The steam initially occupies a volume of 0.1 mat a pressure of 0.5 bar and a temperature of 400 K, as indicated in the figure. The perfect gas has an initial volume of 0.06 mº and a temperature of 400 K. Heat transfer Qin is added to the steam side of the cylinder, which moves the piston inside. The pressure in the steam side increases to 0.75 bar, and its volume increases to 0.11 m. No other external energy transfers occur. The perfect gas has a ratio of specific heats y = 1.33 and a specific gas constant R = 231 J/kgK. Determine: (a) The mass of the perfect gas in kg. (b) The volume of the perfect gas after the heat addition, V2g, in mᵒ. (c) The temperature of the perfect gas after the heat addition, Tag, in K. (d) The heat transfer Qin, in J. (e) The total entropy change of the system comprised of the steam and the perfect gas for this process, in J/kgK. (f) (bonus) Is this process irreversible, reversible, or impossible? If you cannot tell from the information given, describe what additional information you would need. Plw = 0.5 bar T1 = 400 K Vlw = 0.1 m3 Qin Water V18 0.06 m3 Tig = 400 K Iw Perfect Gas P2w 0.75 bar V2w = 0.11 m3 Insulated piston