太陽熱を利用した換気システムに関する研究 : ソーラーチムニーを有する独立建物における気象データを用いた非定常熱シミュレーション

概要

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In this study an unsteady-state simulation model of solar chimneys is introduced. The model is based on recent experiments and takes the flow pattern of the flowing fluid, heat transfer coefficients at the collector wall and the radiation heat exchange between the chimney and the environment into account. The chimney model is connected to a simple building model to set up a solar chimney assisted natural ventilation system. Weather data was used to calculate the ventilation performance of the building. Some of the main parameters of the ventilation system were changed to find their effect on the resulting ventilation rates and room temperatures. It was found that the solar chimney assisted system could produce air change rates up to 2 times per hour with a solar chimney area of 6 m^2 in the simulated building. It was also made clear that in summer conditions a solar chimney itself is insufficient to provide cooling to the building it is attached to.
社団法人日本建築学会の論文
2004-03-30