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Penstock Diameter Calculation

Economical diameter from flow and head. Economical diameter, velocity and friction loss (m).

Calculating…
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How do we calculate?

Friction loss is calculated with Darcy-Weisbach (Swamee-Jain friction factor). The smallest diameter with a loss not exceeding 4% of the gross head and a velocity not exceeding 5 m/s is recommended.

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This calculator is used in these sectors: Hydropower. All calculators →

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