Using data given below, determine the main dimensions and blade angles of a Francis turbine. Net head=65 m, speed= 700 rpm, BHP: 400. Actual hydraulic efficiency= 94%, overall efficiency= 85%, flow ratio= 0.18, wheel width at inlet/ wheel diameter at inlet=0.1, inner diameter/ outer diameter= 0.5. Assuming constant velocity of flow and radial discharge. Neglect area blocked by blades. Vane angle at inlet:

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Using data given below, determine
the main dimensions and blade
angles of a Francis turbine. Net
head=65 m, speed= 700 rpm, BHP=
400. Actual hydraulic efficiency3D
94%, overall efficiency= 85%, flow
ratio= 0.18, wheel width at inlet/
wheel diameter at inlet=0.1, inner
diameter/ outer diameter= 0.5.
Assuming constant velocity of flow
and radial discharge. Neglect area
blocked by blades. Vane angle at
inlet:
27° 39
33° 53
41° 82
O 52° 56
Transcribed Image Text:Using data given below, determine the main dimensions and blade angles of a Francis turbine. Net head=65 m, speed= 700 rpm, BHP= 400. Actual hydraulic efficiency3D 94%, overall efficiency= 85%, flow ratio= 0.18, wheel width at inlet/ wheel diameter at inlet=0.1, inner diameter/ outer diameter= 0.5. Assuming constant velocity of flow and radial discharge. Neglect area blocked by blades. Vane angle at inlet: 27° 39 33° 53 41° 82 O 52° 56
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