浴室環境を対象とした熱・水分・バイオエアロゾル輸送と微生物増殖の数値解析

摘要

高湿度環境が出現する住宅内空間の代表として浴室が挙げられる．我が国は世界的にみても入浴頻度が大変高く，その入浴頻度に応じて浴室内に高温・高湿度環境が出現する．高湿度に伴う表面結露，建材内での内部結露の発生は建材劣化の問題に加え，真菌に代表される微生物増殖の問題を伴うことが多く，健康影響や美観上の問題として広く認知されている．%Large numbers of studies have shown an association between living in homes with signs of 'dampness', and incidence and prevalence of airway diseases among children and adults. Damp house have possibility to encourage microbial growth which can increase the risk of adverse health effect and cause the deterioration of indoor air quality. In order to prevent health damage for residents in damp houses, the development of precise prediction method for indoor humidity and microbial condition in design stage is needed. This research focuses on the hygrothermal transport in residensial bathroom. Indoor environment in bathroom becomes high humidity during and after having a bath, and dew condensation on cold wall surfaces is one of the problems in view point of deterioration and disfigurement of building materials. We reports the procedure and the results of coupled numerical simlation incorporated with flow field analaysis and temerature/ humidity distribution in bathroom space and also reports the prediction mehod of microbial contamination in damp houses. Furthermore, microor­ganism growth on wall surfaces under high humidity environment is also confirmed to take countermeasures against con­tamination.