By Amad Suhendra
Sonnek (1923) modified the banki theory assuming a constant angle of the blade equal to 30 , so that the expression resulted in maximum performance:
ηmax = 0.863-0.264 *(D / H)
D is the diameter of turbine (disc) and H is the net head
Ref : Ariel R.Marchegiani , "Turbina de Flujo Transversal O Michell-Banki", Universidad Nacional Del Comahue
D is the diameter of turbine (disc) and H is the net head
Ref : Ariel R.Marchegiani , "Turbina de Flujo Transversal O Michell-Banki", Universidad Nacional Del Comahue
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