Research On The Integrated Design Of Atrium Glass Roof And Sunshade Based On The Optimization Of Light And Heat Environment

With the vigorous implementation of healthy buildings and energy saving and emission reduction policies,people have higher requirements for indoor thermal comfort,light environment and building energy consumption.In a large number of public buildings,glass roofs are often used as the structural form of the atrium roof.However,the glass roof will increase the natural daylight in the interior and will have an adverse impact on the thermal environment of the atrium in summer.If shading can be used to effectively reduce the indoor temperature,excessive shading will cause the thermal comfort of the atrium in winter and insufficient natural lighting in the atrium.Therefore,how to improve the indoor thermal comfort and building energy consumption on the basis of satisfying the lighting intensity of the integrated design of the glass roof and sunshade is the key content of the research.This article first takes glass roof atrium buildings in cold areas as the research object.Through questionnaire surveys,investigations on glass roof atrium building cases,and on-site measurements,the sample statistics and analysis of existing glass roof atriums are found,and it is found that they are common in the atrium interiors.Environmental comfort is not good,some hidden safety hazards,and the lack of integrated design of daylighting roofs and sunshades.The summary and analysis of the above problems can provide a basis for further research on the integrated design strategy of glass daylighting roofs and sunshades.Secondly,it analyzes and explores the influencing factors of the integrated design of the glass roof and sunshade,and proposes the integrated design strategy of the glass roof and sunshade from three aspects,including the integrated design strategy of the glass roof and sunshade in the atrium,the integrated design strategy of component materials and Structural technology integration design strategy,etc.,and through the introduction of a large number of examples for demonstration and analysis,the system summarizes the integrated design method of glass roof and sunshade.Thirdly,based on the Design Builder and Ecotect simulation software,five types of benchmark models for different shapes of flat roof,single slope,double slope,four slope,and zigzag are established,and the design factors are integrated through the integration of modeling factors,material factors,and control methods.Carry out the simulation analysis of the light and heat environment of single variable and multi-variable combination schemes,study and discuss the influence of the integrated design of glass roof and sunshade under different shapes on the light and heat environment of the atrium,and carry out economic analysis on it in combination with the whole life cycle.Appropriate integration and optimization design plan for reference.Finally,based on the above research,combined with the design practice of a glass roof atrium in Shandong Province,through investigation and analysis of its envelope structure,light and heat environment,and on-site measurement,summarized and proposed from the three aspects of modeling,material and control settings.The integrated design strategy of the glass roof and sunshade suitable for the atrium was developed.And use simulation software to simulate the performance of indoor light and heat environment and analyze the investment income.The results show that,through the integrated design practice of the glass roof and sunshading in the atrium of a building in Shandong Province,the atrium space can not only meet the requirements of the light environment,but also improve the indoor thermal comfort environment.Therefore,the research results can provide reference and reference significance for promoting the integrated design of glass roof and sunshade.