Ventillation Rate Calculator

Flow Rate (Q):

Area (A_vent):

Pressure difference caused by wind (Δ P):

Density (ρ):

How This Is Calculated

$$ Q = A_{vent} \cdot \sqrt{\frac{2 \Delta P}{\rho}} $$ where:

Q = Flow Rate (m³/s)

A_vent = Area of the ventillation opening (m²)

Δ P = Pressure difference caused by wind (Pa)

ρ = Density of air (kg/m³)

Assumptions

The system is in steady-state.
Negligible influence of air leaks.
The flow is steady and isentropic.
The fluid behaves as an ideal gas.
Thermal stratification is ignored.

Related Calculators

Buoyancy Force

Buoyancy-Driven Flow Rate

Stack Effect

Plume Cross-Sectional Area

Vertical Volume Flow Rate