| Summary: | 碩士 === 國立臺北科技大學 === 建築與都市設計研究所 === 104 === Fujian Tulou which was known as a classic for ecological buildings is listed on the world heritage in 2008 (UNESCO) in China. Its design strategy can be applied to modern architecture planning and design. The research was conducted to explore the relationship of subtropical residential building forms and the atrium comfort
This study choses 4 different cases (Round Atrium: Er-Yi, Double Round Atrium: Zhen-Chen, and Square Atrium: He-Qui and Wu-Feng) of Tulou in Fu-Jian to compare the ventilation effects of different Atrium forms in the summer and winter. We adopt field measurements and CFD (computer fluid dynamic) simulation of temperature, humidity, and wind environment to identify the relationship between external environment and atrium about comfort and to confirm the relationship about atrium H/W (Height/Width).
Results indicate that through the atrium convection effect, it makes the natural wind guides to each space surrounded and keeps indoor comfort. The comfort of Er-Yi (H/W=0.2778) atrium is better than that of He-Qui (H/W =1.1360). It illustrates that the smaller the ratio of the H/W which is the relationship between the height and the width of an atrium is, the greater the wind speed generated within the street valley. Moreover, the wind speed is very close to the reference wind speed. This field measurement verifies that the value of H / W has great influence of solar radiation heat and sunshine shadows. The ventilation efficiency is: Er-Yi (H/W =0.2778) > Zhen-Chen (H/W=0.3670) > Fu-Yu (H/W =0.8328)>He-Qui (H/W=1.3947). Setting atrium space enhances natural ventilation effective and achieves the purpose of regulating the microclimate which can stable indoor physical environment and enhance the ACH of the building interior space about 97 to 99%. Comparing to none atrium setting, atrium space creates relative comfort ventilation and maintains the temperature within the range of thermal comfort. When there are a large number of indoor heat, atrium can introduce outdoor air flow appropriately to enhance the natural ventilation of the atrium in order to effectively eliminate the heat, thereby increasing the comfort of the interior space. Not only reach the interior space temperature cooling, but also achieve the purpose of building energy-saving. Hope as a future reference for building indoor ventilation and can be applied to future ecological building design.
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