ClueLuma

Air mass flow calculator

Maintain mass flow when preheating combustion air because its density changes.

Units
m˙=V˙×ρ\dot{m} = \dot{V} \times \rho

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

ft³/min
lb/ft³
lb/min

Worked example

Given

  • V˙\dot{V} = 2,900 ft³/min
  • ρ\rho = 0.066 lb/ft³
m˙=2900×0.066=191.4\dot{m} = 2900 \times 0.066 = 191.4

Symbols and units

SymbolMeaningUnit
m˙\dot{m}air mass flowlb/min
V˙\dot{V}volumetric flowft³/min
ρ\rhoair density at the measured conditionlb/ft³

Related calculators

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.