Mass flow rate: The mass of fluid flowing through the cross-section of a pipeline per unit time.

Mass Flowrate refers to the mass of fluid passing through a closed pipeline or an open groove in a unit of time, representing a measure of the quantity of fluid.

The unit is usually kilograms per hour (kg/h) or kilograms per second (kg/s). This concept corresponds to volumetric flow rate and can be expressed as the product of volumetric flow rate and fluid density

The calculation formula for mass flow rate is qm=m/t= ρ* U * A, where qm is the mass flow rate, m is the unit fluid mass, and t is the unit time, ρ Is the fluid density, u is the average flow velocity inside the pipeline, and A is the cross-sectional area of the pipeline.

Mass flow meter is the main tool for measuring mass flow rate, which can be divided into two types: direct and indirect.

Direct mass flow meter directly outputs mass flow rate;

Indirect or derivative formulas calculate the mass flow rate by combining other parameters such as volumetric flow rate and density.