| Summary: | 碩士 === 國立臺灣科技大學 === 建築系 === 98 === Situated in a humid environment, Taiwan’s passive high-performance architectural design can benefit much from the application of natural ventilation. However, the air current of urban wind field is hard to predict. Conventional architectural design approach does not yet process a capable tool to capture this phenomenon. Thus, the integration of natural ventilation design strategy with conventional building design process remains a difficult task. In view of this, this study seeks to discuss the early stage of architectural design with the ventilation design strategies pooled and simple rudimentary simulation software to carry out planning procedure of natural ventilation design.
The preliminary design of the college of design building new construction project in NTUST (National Taiwan University of Science and Technology) in Taipei Gongguang district is adapted to demonstrate this integrative design procedure. The procedure and results are shown as follows.
1. To carry out quantitative analysis of regional climate data by plain-and-simple climate analysis software. To obtain the best strategies of passive architectural design and prevailing wind direction through psychrometric chart and the techniques of wind rose.
2. To transform the spatial need of the college of design building in NTUST as boundary conditions of studied object to simulate the operation of architectural design at the initial stage.
3. To evaluate urban environmental context and environment of natural climate to gain the best design project of the preliminary design stage.
4. To conduct literature research in natural ventilation in humid climate and summarize the result with 59 natural ventilation strategies according to the scales of climatic environment, urban environment, architectural space, and building construction. The ventilation planning design of the initial stage is accordingly processed and the schematic design is developed integrated with wind field of the environment and design concept.
5. To use rudimentary computational fluid dynamics (CFD) software to simulate and evaluate the natural ventilation effect for each alternatives. To generate visible simulative analysis graphics to evaluate urban windy environment and calculate pressure coefficient and pressure gradient. The ventilation potentials for each alternative are quantitatively investigated for the reference of design decision.
6. To discuss the possibility and confinement of using simple simulation software in auxiliary natural ventilation design at the preliminary stage of design to extend the controllable design scope for architects.
The study results show that: the aforementioned operation procedure of ventilation design, the collected ventilation strategies, and rudimentary simulation software at the preliminary stage is applicable in the climatic analysis of architectural design, evaluation of initial design, design development and simulation investigation. It can provide large amount of graphic and quantitative analysis to assist with objective decision of ventilation design. The building project for preliminary design of college of design building planned by this model can both balance the pressure of urban wind field and alleviated the windy effect to greatly approve the wind field traits of urban environment. Besides, the streamline mass groups can also improve potential for interior ventilation. This study has successfully developed an interior ventilation evaluation method by pressure gradient. This method can assist with the application of rudimentary CFD simulation to identify the best ventilation route for buildings. This study summarizes functional influence factors of urban windy environment, ventilation potentials and ventilation routes for later evaluation and references of relevant design.
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