Recommendations
Celerity in pipes filled with waterPound forceEstimated time for manual use of gate valvesEstimated inertiaHead loss coefficient applicable to partially open diaphragm valveUASB check-list: hydraulic parameters
Parmakian's curves
Default

Input data

Flow

Diameter

Celerity

Geometric disparity

Extension of the settlement line

Total head loss

Rotation

Inertia (kgf.m²)

Pump efficiency

Output data

ΔHb

ΔHm

ΔHb - hf

ΔHm - (hf/2)

Description

Given the basic characteristics of the pumping line da linha de recalque (interd diiameter, celerity, extension, geometric head), of the pumping equipment (rotation, inertia WR²) and of the permanent regime (flow, total head losses, pump efficiency), calculates the extreme transient heads at the pump installation and a the pumping line midway.

Parmakian curves

References

  • Parmakian, John. Waterhammer analysis. New York: Prentice, 1955.