DieselShip's Online Content Library

Q7. (a) Define the term degree of reaction relating to a turbine stage. (2)

(b) In a 50% reaction turbine stage the steam leaves the fixed blades with a velocity of 300 m/s. The blade ring diameter is 0.8 m and the speed of rotation is 6000 rev/min. The blade angle is 72°

Determine EACH of the following:

(i) The blade outlet angle; (5)

(ii) The blade work per kg; (3)

(iii) The diagram efficiency. (6)