外部気流を利用した大空間構造物の換気・温熱特性に関する研究

概要

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An adoption of natural ventilation system is one of the most effective strategies on energy concervations for air-conditioning systems in large indoor spaces. Characteristics of air ventilation and thermal condition in a hemispherical large indoor stadium with openings were studied using numerical analysis technique based on the BFC (Boundary Fitted Coordinate system) calculation. As the result of the study, the following conclusions were drawn ; (1) Air flow around a hemispherical dome makes negative pressure field on the top of the roof. (2) Openings arranged on the roof act as an effective exhaust. Enough air exchange rate was obtained in the stadium when the openings were arranged on side walls and top of the roof. (3) Natural ventilation which is obtained using these openings enables to remove heated air caused by the solar radiation, and energy for air-conditionings will be conceived during spring and autumn.
社団法人日本建築学会の論文
1996-03-30