SI Units

The International System of Units (abbreviated SI from “systeme internationale “, the French version of the name) is a scientific method of expressing the magnitudes or quantities of important natural phenomena. There are seven base units in the system, from which other units are derived, as follows:

Property Unit
Length metre (m)
Mass kilogram (kg)
Time Second (s)
Electrical current ampere (A)
Thermodynamic temperature kelvin (K)
Amount of substance mole
Luminous intensity Candela

The derived units most ikmportantfor hydro production as are follows:

Property Unit
Force, F Newton (N)
Work Joule (J)
Power, P Watt (W)
Energy, E kiloWatt-hour (kW-h)
Velocity, v m/s
Area, A
Flow, Q m³/s

Published by hydrogray

Hydropower specialist

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