置換換気方式を採用した音楽ホールにおける温熱快適性と換気効率の実測

概要

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The purpose of this study is to clarify thermal comfort and ventilation effectiveness of displacement ventilation system ia a music hall which requires large outdoor air for the ventilation. Displacement ventilation is characterized by naturally generated stratification in density (thermal) and scalar concentration (pollutant). It was considered appropriate to keep good indoor air quality even if reducing the amount of outdoor air. The black lamp was installed in all seats in order to simulate the heat source from the audience. From the measurement result, the local mean age of air in the respiration point of the displacement ventilation system was about 1/3 of the complete mixing condition. The horizontal distribution of local mean age of air in the occupied zone was little. Vertical temperature distribution in the occupied zone was within an acceptable range, and the horizontal temperature distribution of the hall was almost uniform. It was found that the displacement ventilation system maintained comfortable thermal environment with relatively high air conditioning load, while it kept indoor air quality in the occupied zone within an acceptable range.
社団法人日本建築学会の論文
2002-09-30