DieselShip's Online Content Library

Q10. A mass of 0.1 kg of helium is compressed reversibly in a cylinder, according to the law pVⁿ = constant, from a pressure of 0.98 bar and a temperature of 12°C to a pressure of 8.2 bar. The final temperature is 551.4°C.

(a) Calculate EACH of the following:

(i) The index of compression

(ii) The magnitude and direction of the work transfer

(iii) The magnitude and direction of the heat transfer

(iv) The change in entropy.

(b) Sketch the process on p-V and T-s diagrams.

Note: For helium, γ = 1.667 and R = 2.077 kJ/kg K.