Research On The Western Solar Heating Potential Based On Building Shape Elements

There are abundant solar energy resources in Western China.Most of these areas are located in the cold and cold areas of building thermal zoning.Solar energy has obvious advantages in solving heating problems in Western China.In order to make good use of solar energy for building heating,it is necessary to clarify the potential of building solar energy heating.At present,the research and application of building solar energy heating potential mostly stay in the stage of construction,that is,construction drawing and completion drawing.At the same time,the evaluation method is too complex to be used directly by architects,so it is impossible to effectively control building energy saving in the early stage of building design.Xiang.In view of the above situation,this paper studies the relationship between building shape and building solar energy thermal efficiency from the early stage of architectural design.Firstly,the land area in Western China is vast,and there are significant climate differences,especially the difference of solar radiation intensity.In order to reasonably discuss the relationship between building shape factors and building solar heating potential under different solar radiation differences,it is necessary to divide solar energy resources in Western China based on solar heating.Therefore,based on the theory of simultaneous solar-thermal,photoelectric heating and active-passive combined heating,the zoning basis reflecting the relationship between solar energy and building heating quantity is proposed:ratio of solar thermal heating degree-days(K_V),radiation ratio of photovoltaic heating degree-days(K_β).Before calculating the zoning,it is necessary to define the values of direct and scattered solar radiation at different levels.So three commonly used solar radiation models are selected to study the applicability of the calculation of solar radiation in Western China.It is found that the"Jiang Yingyi"model has the highest calculation accuracy,and the generation of missing and unmeasured data in the zoning basis is completed by using this model.Finally,on the basis of the calculated zoning basis,46 cities in 12 provinces(autonomous regions and municipalities directly under the Central Government)in the western region of China are selected as representative cities for zoning research,and solar energy resources in the western region of China are divided into four regions.The zoning map of solar energy in Western China was drawn by visualization.The results of the zoning lay a foundation for discussing the relationship between building shape factors and building solar heating potential under the whole climate conditions in Western China.Then,in order to further analyze the efficiency of building solar energy heating after solar energy zoning in western China,the potential of building solar energy heating is taken as a link to reflect the relationship between solar energy utilization and building form elements.Choose the best area in jinghong solar energy partition and panzhihua respectively,suitable for the area(area A)lijiang and kashgar,suitable(area B)mesozoic-cenozoic and xi’an,the available area of altay and luzhou city as A representative,to building height to width ratio,higher than the long,south window wall than as building form elements,the Design Builder of dynamic simulation software to calculate the energy consumption of building solar energy heating under different sizes of architectural form elements potential value.The potential function of building solar energy heating was obtained by fitting regression method of mathematical statistical analysis.Finally,in order to visually distinguish the building solar heating potential of each area in solar energy zoning and guide architects to complete the solar building shape conception,the function of building solar heating potential is graphicalized,and the influence of the size change of building shape factors on the building solar heating potential of each area is studied.Through the building solar heating potential function and graphics,the solar heating potential of the actual building project is optimized,and the solar heating design strategy of different regions is put forward.In summary,this paper studies the relationship between building shape factors and building solar heating potential in Western China,and puts forward building solar heating potential functions and graphs which are convenient for architects to use in the early stage of design.In order to provide a new evaluation method and design ideas for the utilization of new building energy in Western China.