(b) A vertical cylinder is fitted with a free moving piston as shown in Figure Q3. The cylinder contains air which is in

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B A Vertical Cylinder Is Fitted With A Free Moving Piston As Shown In Figure Q3 The Cylinder Contains Air Which Is In 1 (39.39 KiB) Viewed 39 times

(b) A vertical cylinder is fitted with a free moving piston as shown in Figure Q3. The cylinder contains air which is initially at a pressure of 120 kN/m2 and a temperature of 20'C. Upon being heated, the gas expands at constant pressure to 3 times its initial volume. Using the properties of air given below, calculate: (i) The mass of air in the cylinder [4 marks) (i) The final temperature of the air [4 marks) (iii) The work done by the air [4 marks) (iv) The change in internal energy [4 marks) (v) The heat transferred to the air [2 marks] Ø250mm Final Position WIZZ Initial Position 200mm Figure 23. For air Cp = 1005 J/kg K = Cy = 717.8 J/kg K R = 287.1J/kg K For Ideal Gases PV = MRT