Question: Define "Degree of Reaction" used in reaction turbine

0

Prove that diagram efficiency of single stage reaction turbine is given by

$ɳ_{b1}$ = 2 - $\frac{2}{(1+2ρcosα-$ρ^2$)}$

where DOR = 50%, & $C_{f1}$ = $C_{f0}$ , ρ is blade speed ratio, α is nozzle angle.

**Subject** : Thermal and Fluid Power Engineering

**Topic** : Steam Nozzle and Turbines

**Difficulty** : High