Example-5:- H.W 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 a diameter of (25 cm). The local atmospheric...

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Extracted text: Example-5:- H.W 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 a diameter of (25 cm). The local atmospheric pressure is (88 kPa). Now, heat is transferred to refrigerant (134a) until the temperature is (15°C). Determine (a) the final pressure, (b) the change in the volume of the cylinder, the enthalpy of the refrigerant (134a).