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Relation between Velocity Coefficient & Nozzle efficiency
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Turbo Machines
Q. What is the relation between Velocity Coefficient (C
c
) and Nozzle efficiency (η
n
)?
- Published on 16 Sep 15
a.
C
c
= (1/2) (η
n
)
b.
C
c
= √(η
n
)
c.
C
c
= (η
n
)
2
d.
C
c
= (η
n
)
3
ANSWER: C
c
= √(η
n
)
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Discussion
Pankaj
-Posted on 13 Oct 15
The Velocity Coefficient (C
c
) can be defined as the ratio of actual exit velocity to the ideal exit velocity.
Therefore,
C
c
= (Actual exit velocity) / (Ideal exit velocity)
C
c
= √((Actual enthalpy drop) / (Ideal enthalpy drop))
C
c
= √(Nozzle Efficiency)
C
c
= √(η
n
)
➨
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