Search for question
Question

2. A piston - cylinder device contains 0.90 kg ofrefrigerant-134a at -15°C. The piston that is free to move has a mass of 15 kg and a diameter of 25 cm.The local atmospheric pressure is 90kPa. No wheat is transferred to refrigerant-134a until the temperature is 20°C. Determine the following

a. The final pressure

b. The change in the volume of the cylinder

c. The change in the enthalpy of therefrigerant-134a.

Fig: 1