| PUMP EFFICIENCY CALCULATOR & OPTIMAL EFFICIENCY PREDICTOR | ||||||
| ① Existing Pump Specifications — from pump nameplate or datasheet | ||||||
| Pump type | Select pump type from dropdown | |||||
| Number of stages | ||||||
| Pump speed | rpm | |||||
| SI Units | US Units | (Enter SI or US — the other fills automatically) | ||||
| Specified head | metres | feet | ||||
| Specified flow | m³/h | GPM (US) | ||||
| Pump shaft power | kW (optional) | |||||
| Motor rated power | kW | hp | ||||
| Motor speed | rpm | |||||
| Specified motor voltage | Volts | |||||
| Motor full load current | Amperes (optional) | |||||
| Motor efficiency category | Select IE class from dropdown | |||||
| ② Fluid Data | ||||||
| Fluid | ||||||
| Fluid specific gravity | ||||||
| Fluid kinematic viscosity | cSt (optional) | |||||
| ③ Measured Values | ||||||
| Pump data | SI Units | US Units | (Enter SI or US — the other fills automatically) | |||
| Pump speed | rpm | rpm | (use nameplate if not measured) | |||
| Suction pressure | kg/cm²(g) | psi(g) | ||||
| Discharge pressure | kg/cm²(g) | psi(g) | ||||
| Calculated head
= (Pd−Ps) × 10 / SG
|
metres | feet | auto-calculated from pressures & SG | |||
| Flow | m³/h | GPM | ||||
| Specific speed Ns | US units = RPM × √Qgpm / (Hft/stages)0.75 | |||||
| Motor data | ||||||
| Motor operating speed | rpm — assume nameplate motor speed if directly coupled | |||||
| Motor current | Amperes (optional — used to estimate motor input power) | |||||
| Motor input power | kW OR | kW — estimated from motor current above | ||||
| Motor operating efficiency | % — from IEC 60034-30-1:2014, based on IE class & load | |||||
| Motor power factor | estimated from IE class and load | |||||
| ④ Summary of Important Parameters and Results | ||||||
| Pump operating speed | — | rpm | ||||
| Number of stages | — | |||||
| Operating head | — | m | — | ft | ||
| Operating flow | — | m³/h | — | GPM | ||
| Specific speed Ns | — | US units | ||||
| Motor input power Pm-in | — | kW | ||||
| Motor operating efficiency ηm | — | % | from IEC 60034-30-1:2014 | |||
| Pump shaft power | — | kW | — | hp | ||
| Calculated Pump Efficiency | — | % | = SG × Q × 9.81 × H / (3600 × shaft_kW) × 100 | |||
| ⑤ PSAT Optimal Efficiency — Existing Duty Point (ANSI/HI 1.3) | YES | |||||
| HI base efficiency (at measured flow) | — | % | ||||
| Specific speed penalty | — | % | ||||
| OPTIMAL PUMP EFFICIENCY ACHIEVABLE | — | % | HI max curve − Ns penalty | |||
| Gap vs PSAT optimal | — | pp | ||||
| Expected motor input power at optimal | — | kW | ||||
| Electrical power saving potential | — | kW | — | kWh/yr | at 8,000 operating hours/year | |
| ⑥ New pump selection — same speed & stages, adjusted duty point (optional) | YES | |||||
| Operating speed | rpm | |||||
| Number of pump stages | ||||||
| Desired new flow (with margin) | m³/h | GPM | ||||
| Desired new head (with margin) | m | feet | ||||
| OPTIMAL EFFICIENCY — new duty point | — | % | ||||
| Optimal pump shaft power | — | kW | ||||
| ⑦ New pump selection — different speed, stages, head & flow (optional — full re-selection) | YES | |||||
| SI Units | US Units | |||||
| Desired new operating speed | rpm | |||||
| Desired new number of stages | ||||||
| Desired new flow (with margin) | m³/h | GPM | ||||
| Desired new head (with margin) | m | feet | ||||
| OPTIMAL EFFICIENCY — new pump | — | % | ||||
| Expected shaft power | — | kW | — | hp | ||
| Expected motor efficiency | — | % | ||||
| Expected motor input power | — | kW | ||||