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Penstock Diameter Calculation
Economical diameter from flow and head
- Design flow (m³/s)
- Gross head (m)
- Pipe length
Result: Economical diameter, velocity and friction loss (m).
Hydropower plants: penstocks and large diameters
“Ready” calculators can be used right away. For those marked “Coming soon”, send us the calculation on WhatsApp and our team will do it.
Penstock
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Penstock Wall Thickness
The wall thickness required for the pressure
- Pipe size
- Static pressure and water hammer
- Steel grade (S235, S355)
Result: Required wall thickness including corrosion allowance.
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Water Hammer Calculation
Pressure rise on sudden closure (Joukowsky)
- Pipe size and wall thickness
- Flow velocity
- Closing time
Result: Wave speed, pressure rise, critical closing time.
Ready
Penstock Support Spacing
How many metres between supports?
- Diameter and wall thickness
- Full weight
- Slope
Result: Support spacing and support load.
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Net Head and Plant Output
How many MW after losses?
- Gross head and flow
- Penstock diameter and length
- Turbine efficiency
Result: Net head and installed capacity (MW).
Large-diameter parts
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Large-Diameter Flange Selection
Flange dimensions up to DN 3000
- Pipe size
- Pressure class
- Flange type
Result: Flange dimensions, number of bolts, weight; manufacturing quote.
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Mitred Elbow Calculator
Segment cutting dimensions up to DN 6000
- Pipe size
- Elbow angle
- Number of segments
Result: Segment lengths, cut angle, development template.
Let us turn your calculation into a bill of materials
Send us the list from the calculator; we will quote flanges, elbows, tees, reducers, pipes and valves in a single offer, with EN 10204 3.1 material certificates.
Results are for preliminary selection and do not replace engineering design. Ask our technical team for the final selection.