Air infiltration and ventilation calculation techniques.

A range of calculation techniques is available for the calculation of air infiltration and ventilation in buildings. The choice is largely dependent on intended application, while the level of complexity ranges from straightforward empirical techniques to detailed multi-zone numerical methods. The objective of this article is to outline some of the techniques currently available and to indicate the purposes for which they are most suited. More detailed information is presented in the AIVC's Air Infiltration Calculation Techniques Guide.1 The prime function of these techniques is to provide basic data for ventilation design and associated parameters.