Question: A piston/cylinder, shown in Fig P5.133, contains R-12 at 30C, x = 20%. The volume is 0.2 m3. It is known that Vstop = 0.4

A piston/cylinder, shown in Fig P5.133, contains R-12 at − 30°C, x = 20%. The volume is 0.2 m3. It is known that Vstop = 0.4 m3, and if the piston sits at the bottom, the spring force balances the other loads on the piston. It is now heated up to 20°C. Find the mass of the fluid and show the P–v diagram. Find the work and heat transfer.

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