Hydraulic power of the pump Q·H/367 (kW; Q m³/sa, H m, su için), mil gücü bunun pompa verimine, motor gücü de mil gücünün motor verimine bölümüyle bulunur. Örneğin 50 m³/sa, 30 m, %70 pompa / %90 motor verimi için ≈ 6,5 kW motor gerekir (7,5 kW standart).
P_hydraulic = Q·H/367 · P_shaft = P_hydraulic/η_pump · P_motor = P_shaft/η_motor
Example calculation: 50 m³/sa, 30 m → hidrolik 50×30/367 ≈ 4,1 kW; %70 pompa → mil 5,8 kW; %90 motor → 6,5 kW → 7,5 kW standart motor.
Pump Motor Power (Hydraulic → Shaft / Motor)
Calculate the pump's hydraulic power, shaft power, and required motor power from the flow rate and head.
Hydraulic power
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Spindle power
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Recommended engine
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Notes: Hydraulic power (kW) = Q·H/367 (Q: m³/hr, H: m, for water) · Shaft = hydraulic/pump efficiency · Motor = shaft/motor efficiency. Cavitation/NPSH, system losses, and starting torque are also evaluated; motor için ayrıca marj (tipik %10–15) önerilir. Sonuç seçim için ön bilgidir.
How is it calculated?
- Enter the flow rate (m³/hour) and head (m).
- Enter the pump and motor efficiency (%).
- Press Calculate; the hydraulic/shaft/motor power will be displayed.
Frequently Asked Questions
How to determine pump motor power?
First, the hydraulic power is calculated using the formula Q·H/367, then divided by the pump and motor efficiencies to find the required motor power.
Why leave a margin of error in the engine?
Kalkış, aşınma ve çalışma noktası kaymalarına karşı motor tipik %10–15 marjla bir üst standart güce seçilir.
Are NPSH/cavitation included in this calculation?
No; cavitation (NPSH), pipe friction losses, and the system curve must also be evaluated.
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