Πώς να υπολογίσετε το Pump Power
Τι είναι το Pump Power;
Pump power requirement is calculated from flow, head, and efficiency. Proper sizing prevents under-pumping and excessive energy waste.
Τύπος
Calculate: P = (Q × H × ρ × g) / η
- P
- (GPM × Total Head) / (3960 × Efficiency) — (GPM × Total Head) / (3960 × Efficiency)
- Q
- Q value — Variable used in the calculation
- H
- H value — Variable used in the calculation
Οδηγός βήμα προς βήμα
- 1Calculate: P = (Q × H × ρ × g) / η
- 2Or: P = (GPM × Total Head) / (3960 × Efficiency)
- 3Account for motor losses beyond pump efficiency
Worked Examples
Εισαγωγή
Q = 0.05 m³/s, H = 20 m, ρ = 1000 kg/m³, η = 0.75
Αποτέλεσμα
P ≈ 13 kW required
Select larger motor for margin
Common Mistakes to Avoid
- ✕Under-estimating system friction loss
- ✕Over-sizing pump (operates inefficiently at partial load)
Frequently Asked Questions
Why does head matter more than volume?
Quadratic relationship with head; doubling head doubles power. Efficiency varies with duty point.
How do you select pump size?
Choose pump with duty point (Q, H) near best efficiency point for long equipment life.
Είστε έτοιμοι να υπολογίσετε; Δοκιμάστε τον δωρεάν υπολογιστή Pump Power
Δοκιμάστε το μόνοι σας →