Boiler Feed Pump Calculation
A boiler feed pump must deliver enough pressure and flow to push feedwater into the boiler reliably. This Boiler Feed Pump Calculation tool helps you estimate differential pressure, total dynamic head (TDH), and approximate motor power using practical engineering inputs.
What This Boiler Feed Pump Calculation Includes
This calculator estimates:
- Pressure difference between boiler drum and suction source
- Head generated from differential pressure (pressure head)
- Static head from elevation change
- Friction head from piping and fittings
- Hydraulic power and estimated motor/shaft power (based on efficiency)
How to Use the Calculator
- Enter flow rate (m³/h or gpm).
- Input boiler pressure and suction/tank pressure.
- Add static elevation and friction loss (estimated).
- Set density and pump efficiency.
- Click Calculate to see ΔP, TDH, and power results.
Practical Notes (Important)
This Boiler Feed Pump Calculation is a sizing guide. For final pump selection, also confirm:
- NPSH available vs NPSH required
- Feedwater temperature impacts (density & vapor pressure)
- Control valve losses and minimum-flow recirculation
- Operating range on pump curve and safety margins
FAQs
What is TDH in a boiler feed pump calculation?
What is TDH in a boiler feed pump calculation?
Is this result exact for final pump selection?
It’s best for preliminary sizing. Final selection should be validated with pump curves, NPSH checks, and real piping losses.
What efficiency should I use?
If you don’t have vendor data, 60–75% is a reasonable starting range depending on pump size.