Likewise, CL should range between 1 and 100 for both, impulse and
reaction turbines. Even though b is used throughout the entire
paper, only CL is needed for design purposes.
Figs. (3) and (4) plotQþ versus Pþ in Eq.(12)for typical ranges of
b for impulse and reaction turbines, respectively. An overall hydroelectric unit efficiency (h) of 0.8 was used for plotting these
figures. As can be observed in Figs. 3 and 4, the change in power
production in relation to change in flow discharge (DPþ/DQþ) for
each dimensionless curve has a positive and negative gradient. For
optimizing power production, only the positive gradient is of interrest (DPþ/DQþ > 0).
Likewise, CL should range between 1 and 100 for both, impulse andreaction turbines. Even though b is used throughout the entirepaper, only CL is needed for design purposes.Figs. (3) and (4) plotQþ versus Pþ in Eq.(12)for typical ranges ofb for impulse and reaction turbines, respectively. An overall hydroelectric unit efficiency (h) of 0.8 was used for plotting thesefigures. As can be observed in Figs. 3 and 4, the change in powerproduction in relation to change in flow discharge (DPþ/DQþ) foreach dimensionless curve has a positive and negative gradient. Foroptimizing power production, only the positive gradient is of interrest (DPþ/DQþ > 0).
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