What’s flow measurement
Technically, flow is a quantity of fluid or gas passing through a known area in a specific period of time. We also have two types of flow, volumetric and mass flow.
Volumetric flow: When you have a volume of fluid passing through an area in a unit of time. We measure volumetric flow in units such as cubic meter per second and hour (m³/s, m³/h) or liter per second and hour (l/s, l/h).
Qv = v x A
Qv = volumetric flow
v = flow velocity
A = cross-sectional area
——–
Qv = V/t
Qv = volumetric flow
V = volume
t = time
Mass flow: When you have a mass of fluid or gas passing through a pipe during a certain unit of time. We measure mass flow by kilogram per second and hour (kg/s, kg/h).
Qm = ρ x v x A
Qm = mass flow
ρ = density
v = flow velocity
A = cross-sectional area
—
Qm = m/t
Qm = Mass flow
m = fluid mass
t = time
