EngineeringToolkit

Residence Time Formula

Average time a fluid element spends inside a reactor or process volume.

Formula

τ = V/Q

Discipline: Chemical Engineering. Result unit: s.

Variables and units

  • τ — Residence Time (s): Average residence time
  • V — Volume (m³): Reactor or vessel volume
  • Q — Volumetric Flow Rate (m³/s): Flow rate through the system