Wind-induced cross ventilation is one of the key technologies for saving energy while controlling the indoor environment, and seems to be a crucial element of any sustainable building policy. However, it is sometimes difficult to arrange openings on two sides for cross ventilation of a room.
Most rooms have an only single-sided opening in buildings in built-up areas. Since the airflow rate with a single-sided opening is much lower than that with two-sided openings, it is important to study how we can increase the airflow rate with a single-sided opening using either passive or active techniques. In this study, the characteristics of wind-induced ventilation with single-sided openings are analyzed through wind tunnel experiments.
In some experimental cases, a small object is attached to the opening in order to increase the airflow rate. (It is assumed that this object replicates a pivoted window whose vertical axis is in the center of the window.) In other experimental cases, circulation flow is artificially induced in the room used in the experimental model in order to increase the airflow rate. A synergistic effect from the fresh air entering through the opening is expected with the circulation.
1975年東京大学工学部建築学科卒業、1985年東京大学大学院工学系研究科都市工学専攻にて博士号取得。1980年東京大学工学部建築学科助手、1987年東京大学生産技術研究所助教授。 1999年より東京大学生産技術研究所教授をつとめる。研究分野は、室内の気流及び温度分布に関する研究、防煙・防火対策に関する研究、温熱感に関する研究、換気、防煙・防火、健康と安全性に配慮した総合的な設計法。1997年に日本建築学会賞、1998年にASHRAEよりCROSBY FIELD 賞、1990年に日本建築学会賞を受賞。空気調和・衛生工学会より1998年〜2002年の優秀論文10報に選ばれている。
(翻訳：西澤)
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