Study On Intelligent Shading Technology Of Office Buildings In The Hot-summer And Cold-winter Zone

With the continuous development of the building industry in our country,more and more attention has been paid to the concept of building energy saving.Passive energy technology is a way which realizes the reduction of building energy consumption by means of non-mechanical and electrical equipment intervention from architecture design to building construction.Among these technologies,intelligent shading technology is playing an increasingly important role whether it is to meet the indoor thermal comfort of human beings,or to reduce energy consumption.Hengyang area belongs to the hot-summer and cold-winter zone,which is an important part of building thermal design partition.In summer,it is very burning.And the climate condition here is very harsh.Office buildings as functional attributes is uniform.Besides,office staff assembled indoors spend more than a third of the whole day to stay in office buildings.As the sun radiation through outside the window into the interior,the staff spend a lot of air conditioning energy consumption to ensure the comfort of indoor thermal environment.Intelligent shading technology is an important means to prevent the sun's radiant heat from entering the interior.Therefore,the study of intelligent shading technology of office buildings in hot-summer and cold-winter zone can provide scientific basis and suggestions for architectural design and shading design.In the earlier stage,this paper proceeded from climate characteristics and office building energy consumption characteristics of Hengyang area.And studying through data collection,field investigation,analysis and summary of office building shading methods and characteristics of Hengyang area.Besides,this paper researched the existing problems in Hengyang area with regard to office buildings shading status.In the later stage,the method of combination of simulation and experiment was adopted in this paper.Ecotect Analysis software was used to build a typical office building of a three dimensional model of Hengyang area.The model was to simulate the louver angle changes under the condition of the working time of a day when the minimum illumination standard of the measuring point of the working surface is met.And the experiment platform was built.By comparing the measured value with the simulated value,the accuracy of the simulation model was verified.Through numerical simulation,the advantages and necessity of using intelligent shading louvers are demonstrated by comparing the shading effects of intelligent shading louvers and non-shading louvers and intelligent shading louvers and fixed shading louvers.By simulating different orientation conditions of intelligent shading louvers and adopting the quality-guaranteed minimum illumination and thermal coefficient of the room as evaluation standard,trying to get a set of optimal values for varying louver angles over time under these different working conditions,which enrich the database of intelligent shading technology in the hot-summer and cold-winter zone and provide certain reference for analysis of air conditioning energy consumption of buildings using intelligent shading louvers in the future.The study of the intelligent shading technology of office buildings in the hot-summer and cold-winter zone(Hengyang area as a example)is of great significance to the the energy-saving design of office buildings in the hot-summer and cold-winter zone.