Research On The Optimum Design Of The Photo-thermal Performance Of The Convention And Exhibition Building In The Western Solar Energy Concentration Area

At present,with the continuous advancement of urbanization in China,the proportion of building energy consumption in the total consumption of social commodity energy has risen to about 25%,and will continue to grow in a certain period.Therefore,building energy conservation has become an important aspect of improving the social energy efficiency.Due to its tall space,the energy consumption per unit area of the exhibition building is generally high,and its energy consumption mainly consists of heating,cooling and lighting.Western solar energy rich areas,with cold winter climate,strong solar radiation and other climatic characteristics.Under the premise that the space form of exhibition hall is relatively solidified due to the restriction of function,how to improve the photothermal performance of the building by optimizing the skin shape to adapt to the climate characteristics has become the key to its passive energy saving.The research object of this article for the convention in the western solar enrichment region of buildings,the first exhibition belong to large space buildings,so to understand their architectural attributes classification,the paper summarizes its design characteristics,and combining with the climate characteristics of the western solar enrichment region,select the appropriate skin form,adopt appropriate shading form,using suitable simulation,to find the right solution.This paper is divided into three parts.Firstly,the spatial characteristics,use characteristics and passive design of current exhibition buildings are discussed and studied,starting from the utilization of solar energy.Passive shading;Case study was conducted in the direction of natural lighting,and the common lighting and shading forms of exhibition buildings were summarized.The second part classifies and summarizes the exhibition buildings in the western solar energy rich area,extracts the commonly used forms of lighting and shading,analyzes the current situation of xining international exhibition buildings through field research and data collection,and conducts simulation comparison and verification on this basis.The third part takes qinghai international convention and exhibition center as an example for practical research.On the basis of the shading and lighting design strategies selected previously,parameters and variables are selected to control,and optimization objectives are set,so as to finally complete the skin optimization of the exhibition building.This paper discusses the optimization design of building energy conservation supported by optimization theory and relevant digital technology,and expounds the specific research methods.The passive skin parameter model is established in Rhino+Grasshopper platform,and the corresponding Ladybug+Honeybee photothermal simulation platform is simulated,and the genetic algorithm is applied to carry out multi-objective optimization of building skin morphology.Research is verified based on the performance of field under consideration,the feasibility of solar energy enrichment region exhibition building skin optimization,passive design strategies for this type of exhibition architecture,puts forward the multi-objective optimization method based on the performance of field epidermis and process,can assist designers in the design stage to take passive design methods for quantitative performance simulation and optimization,to create high-performance epidermal morphology.