Question 1

What is mass flow rate?

Accepted Answer

Mass flow rate is the amount of mass moving past a location each second, minute, or hour. It differs from volumetric flow because density is already built into the value.

Question 2

When is mass flow rate used instead of volumetric flow rate?

Accepted Answer

It is preferred when density changes significantly, especially with gases, steam, and compressible fluids. Engineers use it when conservation of mass matters more than occupied volume.

Question 3

What is the SI unit for mass flow rate?

Accepted Answer

The SI unit is kilograms per second. Smaller or larger process systems may use g/s, kg/min, or kg/h in practice.

From	To
1 Kilogram per Second	2.204623 Pound per Second
1 Pound per Second	0.4535924 Kilogram per Second
1 Gram per Second	3.6 Kilogram per Hour
10 Kilogram per Hour	22.04623 Pound per Hour
100 Pound per Hour	12.59979 Gram per Second

Mass Flow Rate

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