校舎建築の自然換気システムにおけるソーラーチムニーの性能予測に関する研究

概要

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The results of numerical simulation on the effects of solar chimney system combined with underground coolth for ventilation and cooling in a four storied new school building in Kitakyushu are described. The inside surface temperatures of four walls of solar chimney were estimated using the outside temperature and solar radiation in summer. The air velocity and pressure within the solar chimney were estimated by simplified method and CFD calculation and both results agreed quite well. It was found that the air flow rates were highly dependent on the inside wall temperatures and section ratio of solar chimney for a given section area. The results showed the temperature difference of 0.4℃ at the top of the solar chimney, the pressure difference of 0.2-1Pa and the air velocity of 0.05m/s for the solar chimney section area of 4.93m^2. It is expected that the natural ventilation by the 8m high solar chimney with 4.93m^2 of section area could provide about 5900m^3/h of ventilation on sunny summer days from the results of CFD simulation.
社団法人日本建築学会の論文
2000-11-30