About the calculation
The calculator is based on equations from the CIBSE Applications Manual – AM10: Natural Ventilation in non-domestic buildings. This Applications Manual is referred to in e.g. ASHRAE 62.1 2019.
When designing based on cross ventilation, the calculator will use a conservative wind direction by using a difference of wind pressure coefficient of 0.15.
All the calculations are completely theoretical and do not always reflect the best overall design solutions. Please consider design guidelines before making any final decisions. Feel free to contact WindowMaster to get support with your design.