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Natural ventilation
Effective natural ventilation creates indoor airflow that minimizes the need for mechanical ventilation systems, which reduces a building’s operational costs and increases its sustainability.
Natural ventilation is driven by buoyancy pressure (stack effect) and by wind pressures. For most buildings, wind forces overcome natural ventilation once wind speeds rise above 3-6mph. For a building that is not sheltered by its surroundings, the building would need an 18-story atrium for stack effects to match the forces of a 6mph wind.
Many natural ventilation assessments do not account for the effects of the outdoor wind environment. To ensure the complete and accurate design information, CPP uses wind tunnel testing to model the effects of wind and the building’s surroundings and CFD—with input data from the wind tunnel— to assess indoor airflow.
By applying the strengths of both CFD and wind tunnel modeling, CPP offers better data for effective natural ventilation design.
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