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A piston–cylinder device contains 0.85 kg of refrigerant-134a at -10°C. The piston that is free to...

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Mechanical Engineering

A piston–cylinder device contains 0.85 kg of refrigerant-134a at-10°C. The piston that is free to move has a mass of 12 kg and adiameter of 25 cm. The local atmospheric pressure is 88 kPa. Now,heat is transferred to refrigerant-134a until the temperature is10°C. Determine (a) the final pressure, (b) the change in thevolume of the cylinder, and (c) the change in the enthalpy of therefrigerant-134a.

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