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(Solved): A piston-cylinder device contains 0.75 kg of refrigerant134a at 15C. The piston that is free to mo ...



A piston-cylinder device contains 0.75 kg of refrigerant134a at 15°C. The piston that is free to move has a mass of 15 kg and a diameter of 30 cm. The local atmospheric pressure is 79 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 17°C. Determine (a) the final pressure, (b) the change in the volume of the cylinder, and (c) the change in the enthalpy of the refrigerant-134a.



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