換気回数の変化が人間健康被害と内部・外部費用に与える影響のライフサイクルインパクト評価 : 室内空気汚染による健康被害に関する研究(その2)

概要

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The residences in which indoor ventilation is lacking are increasing due to the improvement of air-tightness. Reflecting this situation, the health damages by the indoor air pollution, such as sick house syndrome, have become one of the most serious social problems. Increase of the amount of ventilation is recommended for improving indoor air pollution. While replacing indoor air with outdoor one frequently has positive effects on indoor air pollution, it has negative effects on energy saving and global warming mitigation. Therefore, in order to take measures to prevent the health damages caused by indoor air pollution, it is necessary to assess rationally such a trade-off relation among various environmental issues. In this study, the effect of the ventilation on direct health damages by indoor air pollution, and on indirect damages by global warming and air pollution is evaluated quantitatively and integrally using LIME; Life-Cycle Impact Assessment Method of Endpoint modeling. Furthermore relation between the effectiveness of the improvement of indoor air pollution on health damages and internal / external expenses is examined. The result of assessment proves that ventilation is effective in both human health damages and total expenses. In particular, it becomes clear that the total of internal / external expenses becomes least when air change rate is about 0.5 times/h.
社団法人日本建築学会の論文
2005-09-30