Abstract
Areaway space can provide wind-driven natural ventilation in the adjacent basement room in residential house design. The accurate prediction of effective air change rate is quite important. However, little is known about this kind of ventilation problem so far. In order to gain more knowledge in this field and make accurate ventilation predictions, direct measurement of ventilation rate was performed in this study by using small scale models in a wind tunnel. In the experiment, with the consideration of ventilation induced only by wind force, we used the constant tracer gas flow technique to measure the time-averaged ventilation rate for 9 wind directions for each case. Furthermore, the relations between the ventilation rate and some ventilation factors including wind direction, opening configuration, width of areaway space, building coverage ratio et al. were investigated and analyzed in detail.
