The standard formula for in a booster system is:
f = Darcy friction factor (which is a function of the pipe's roughness and the fluid's Reynolds number) L = Length of the pipe D = Inside diameter of the pipe V = Fluid velocity g = Acceleration due to gravity 3. Minor Losses (
Doing it manually meant 3–4 hours of formulas, Moody charts, and risk of arithmetic errors. One wrong friction factor could undersize the pump—leading to low flow on upper floors, angry residents, and a very awkward site meeting.
Add a column for pump speed reduction: Head₂ = Head₁ × (RPM₂/RPM₁)² . Helps analyze energy savings. booster pump head calculation xls
): Pressure lost as water travels through pipes and fittings. The pressure needed at the outlet (e.g., 25–50 PSI). Existing Supply Pressure ( Hsupplycap H sub s u p p l y end-sub
Mariana was a junior mechanical engineer at a mid-sized MEP firm. At 4:45 PM on a Friday, her project manager dropped a stack of marked-up drawings on her desk: "High-rise apartment building. Water pressure drops on floors 12–15. Residents are complaining. I need booster pump head calculation by Monday — and don't just guess. Use an Excel sheet so we can adjust flow rates later."
Hvalves/fittingscap H sub v a l v e s / f i t t i n g s end-sub The standard formula for in a booster system
While you can calculate TDH manually, using a spreadsheet (like an XLS file) makes the process infinitely easier, allowing you to quickly iterate through different pipe diameters, friction factors, and flow rates. What is a Booster Pump and Why Does Head Matter?
Priya, a junior mechanical engineer at AquaRise Consultants , had just been handed her first solo project: design a booster pump system for a new 20-story residential tower. The client was clear—residents on the top floors couldn’t suffer from dribbling showers during morning peak hours.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Add a column for pump speed reduction: Head₂
Comprehensive Guide to Booster Pump Head Calculation (with XLS Templates)
Add for fittings to the physical pipe length to get the total length ( Step 4: Define Required Terminal Pressure
Pump selection should deliver 10 m³/hr at 39.5 m head, with duty point near best efficiency point (BEP).
By setting up these calculations in an Excel worksheet, you can quickly optimize your booster pump selection for efficiency and performance.