ドライエリアを有する地下居室における風力換気性能に関する風洞実験ドライエリアを有する地下居室における通風換気に関する研究（その1）

摘要

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.%本論文では、ドライエリアを有する地下室および地上階室の風力換気性能を風洞実験により調べた。今回の検討は単体建物模型および街区建物模型をそれぞれ対象とし、トレーサガスの一様供給・吸引法を用いて実質換気量であるPFRの測定を行った。特に、流入風向、空堀幅、開口部形式、地上建物の有無、建蔽率などの換気要因と換気量との関係について明らかにした。