ABSTRACT
This paper reviews some of the current procedures available for predicting and measuring ventilation performance of for naturally ventilated buildings, and in particular how measurements and prediction methods can be combined to provide a better understanding of ventilation performance. The paper includes a brief review of:
• air leakage measurements (whole building and component testing) using fan pressurisation;
• thermography to locate main air leakages; • measurement of ventilation rate using tracer gas and metabolic carbon dioxide; • visualisation and measurement of indoor air movement; • prediction of ventilation rate using zonal models; • prediction of indoor air movement and ventilation rate using CFD; • wind tunnel estimation of external pressure coefficients (Cp’s). Throughout the paper reference will be made to results from recent research projects carried out by the Architectural Science Research Group at the Welsh School of Architecture.
