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Stack Effect Calculator















How This Is Calculated


$$ Q = C \sqrt{H \Delta T} $$ where:

Q   =   Airflow Rate (m³/s)

C   =   Discharge Coefficient   (Dimensionless)

H   =   Height of the building or the vertical distance between openings   (m)

Δ T   =   Temperature difference between the indoor and outdoor air   (K)


Assumptions


  • The system is in steady-state.
  • Temperature indoors is uniform.
  • Temperature outdoors is constant.
  • Fluid is incompressible.
  • Fluid behaves as an ideal gass.


Related Calculators


Buoyancy Force Buoyancy-Driven Flow Rate Ventilation Rate Plume Cross-Sectional Area Vertical Volume Flow Rate