Pump Energy Design Tool

⚙️ System Inputs

Discharge Q

Static Lift (m)

Friction + Minor Losses (m)

Operating Pressure Head (m) · FAO sprinkler: 30 m

Pump Efficiency (%)

Overall Derating Factor · FAO: 1.2

Motor Efficiency · FAO: 0.88 for small schemes

Annual Volume Pumped (m³/year, gross)

Irrigated Area (ha)

Motor Sizes

TDH = Static + Friction + Pressure
P (kW) = Q × TDH × Derating ÷ (C × E_p)
C = 360 for m³/h · 102 for l/s
Hours = Volume ÷ Q
Energy = Hours × Motor kW ÷ E_m
HP = kW × 1.34

📐 Interactive Pump Schematic

Move the sliders — schematic and results update live

📊 TDH Breakdown

⚡ Calculated Results

🔄 Compare Surface · Sprinkler · Localized

Move the static lift and watch the energy ranking change (FAO Module 5, Examples 6–9 and Table 3).

Static Lift (m)

Net Irrigation Req. (m³/ha/yr)

Area (ha)

Pump Eff. (%)

Motor Eff.

Derating Factor

Motor Sizes