Study On Composite Design Of Educational Buildings External Sunshade

This dissertation is a subsidiary subject of the Fundamental Research Funds for the Central Universities subject “Study on the Composite Design of Architectural Sunshade Based on Regional Climate”(Grant No 106112014CDJZR190006).The emphasis is focused on the relationship between the educational buildings external sunshade and daylighting, ventilation, vision,put forward compound design strategies of external sunshade through the qualitative analysis and quantitative research,to provide a more scientific basis for the composite design of educational buildings external sunshade.Since the reform and opening up, China’s city construction has been a trend of rapid development. It is expected that in 2020, the total construction area will reach 68 billion ㎡.So far, China’s existing non energy-saving construction accounted for more than 90% of the total building area. The energy consumption of these buildings during use will account for nearly 1/3 of the total energy consumption of the whole society. Due to the large-scale construction and ongoing use in the process of urbanization, this proportion is still increasing. Building energy saving has become the biggest potential, the most direct and effective way in all sorts of energy-saving ways.The improvement of palisade structure thermal performance is an important approach to building energy efficiency, and architectural sunshade is the effective energy saving measures of enhancing enclosure structure thermal.Strongly advocated architectural sunshade, active use of sunshade, promote the development of sunshade technology, is an indispensable part of energy saving and emission reduction, the environmental protection in the whole society.Architectural external sunshade is one of the important means of building energy saving.Sunshade can reduce solar radiation, but improper sunshade measures can lead to insufficient indoor lighting, influence the solar heat gain in winter indoors.At present,the majority of our architectural sunshade is only considered as a single component form, there exist contradiction among sunshade and daylighting, ventilated and vision, and the disconnection with architectural modeling design, sunshade regional missing and so on. In terms of educational buildings, compared to other building types, its personnel concentration is higher, the indoor thermal environment quality is directly related to the students’ learning efficiency and physiological, psychological health; Moreover, the scale of China’s current university campus is expanding, educational building energy gradually transformed from small households to energyhungry.Therefore, takes Chongqing as an example, the University teaching building as the target object, this paper carried out the integrated research on educational buildings external sunshade. Bring the idea of composite into the external sunshade design of educational building, it is of great significance to improve the indoor thermal comfort, visual comfort and energy saving.This study mainly consists of the following parts:Firstly, using relevant tools(such as Measuring instrument for temperature and humidity, illumination meter), field testing the architectural sunshade condition.Statistical analysis of data based on relevant theoretical knowledge, obtained a series of problems of the educational building sunshade, And then puts forward the composite shading design concept that being able to meet the comprehensive requirements of reducing building indoor thermal radiation, lighting, ventilation, and vision, and can also combine with architectural modeling.Secondly, through Skechup, Ecotect software to establish the composite architectural sunshade model of each orientation, analyze its effect of shading solar radiation and the influence on daylighting effect, and then reuse the Airpak software to simulate the indoor ventilated effect,obtain the optimal comprehensive efficiency of the sunshade form and sunshade parameters value.Finally, according to the simulation results of the above software, analyses and summarizes the composite design strategy that suitable for the college educational buildings external sunshade in Chongqing area.