WattAFlow Water Turbine Calc

Christian Peter Kaiser

About this app

WattAFlow estimates the hydraulic power of a water turbine from the operating point and recommends a typical machine type from Q and H. For a first layout, teaching, and quick what-if checks on the go.

HOW IT WORKS
• Type volume flow Q in m³/s, head H in m and turbine efficiency η in %
• Power updates as you type: P = ρ g Q H η with ρ = 1000 kg/m³, g = 9.81 m/s²
• Log sliders for Q and H, linear slider for efficiency
• Type recommendation uses both flow and head, ranked by best suitability
• Tap a recommended type for a short characterisation
• Types: Pelton, Francis, Kaplan, cross-flow, water wheel, hydropower screw, vortex turbine
• Live Q–H diagram with typical ranges and the current operating point
• Copy the full result set to the clipboard

DESIGNED FOR ENGINEERS
• Precise numeric entry (compact keypad in landscape)
• Light and dark themes (system / light / dark)
• German and English interface
• In-app help and legal notice

UNITS
• Volume flow: m³/s
• Head: m
• Efficiency: % (turbine, not generator)
• Power: kW / MW

IMPORTANT
This app is provided in good faith but without warranty of correctness or completeness. Always verify critical calculations with your own methods and professional judgment. These are typical figures. Suitability for a real plant must be checked with the turbine manufacturer.

What’s new

2.0 — Fresh UI: German and English, system/light/dark, numeric fields, log sliders, landscape mini keypad. Power from Q, H and turbine efficiency. Type from Q and H (Pelton, Francis, Kaplan, cross-flow, water wheel, hydropower screw, vortex). Tap a type for a short note. Typical figures. New Francis-turbine icon.