DieselShip's Online Content Library

Q1) 0.08 kg of Helium is compressed isentropically from 0.325m³, 1.5 bar and 20℃ to 4.8 bar.

It is then heated at constant volume to 680 K.

(a) Sketch PV and Ts diagrams. (2)

(b) Calculate EACH of the followings.

(i) The Volume and Temperature at the end of the initial compression; (5)

(ii) The net heat; (3)

(iii) The net work; (3)

(iv) The total change in entropy. (3)

Note: C_p = 5234 J/kgK  and C_v = 3153 J/kgK