Solar Radiation Analysis Of Building Roof Based On Fengyun Meteorological Satellite

In the 21st century,the dual problems of energy and environment have prompted humans to constantly adjust their energy structure and find new and clean energy sources for sustainable development.With its many advantages,such as sustainability,cleanliness and safety,solar energy has gradually been recognized by all walks of life.The urban space is limited,and the surface is inch by inch.As the building group of the main body of the city,its surface(roof and facade)becomes an effective space for humans to use solar energy in different forms such as light or electricity.Therefore,accurately estimating the amount of solar radiation on the roof of a building at a regional scale has become an important research content of urban solar energy utilization.In the process of solar radiation transmission,in addition to the three elements of the earth's elements,topographical features,and atmospheric attenuation,the influence of the cloud cannot be ignored.Therefore,this paper first selects the meteorological data of different weather conditions of FY 2G meteorological satellite in Licheng District,Jinan City on April22,23,and 24,and uses geo-detectors to analyze the correlation of different cloud influencing factors to direct solar radiation,including the cloud.Total,cloud top height,cloud top temperature,cloud top pressure,cloud classification,cloud phase,etc.Through the multi-factor interaction detection method,combined with the actual situation,the total cloud is determined as the main parameters of the cloud's influence on solar radiation.Secondly,the article uses the airborne Lidar data of Shandong Jianzhu University of Architecture in 2017 to extract the three-dimensional information of the building as the starting data of the solar radiation model.The ArcGIS classic sunny model,short-wave radiation model and solar radiation model considering cloud factors are compared.Analysis,the following conclusions are drawn:(1)Comparing the results of various solar radiation models with the surface solar radiation obtained by Fengyun meteorological satellites,it can be seen that the solar radiation model considering cloud factors fits best with the actual situation.The model can accurately simulate the amount of solar radiation that can be received by the roof of a building under cloud cover.In the case of sunny weather,the classic sunny model based on the ArcGIS platform can accurately simulate the amount of solar radiation that can be received.(2)Using the solar radiation model considering cloud factors to conduct solar radiation simulation experiments on the study area,it can be concluded that the solar radiation in the mid-latitudes of the north and the north of May and May can be multi-peaked in the cloudy and rainy days.The highest solar radiation in the medium can reach 1.21Kwh/m~2;the highest solar radiation in a cloudy day can reach 0.53Kwh/m~2;the highest solar radiation in a rainy day is only 0.36Kwh/m~2.(3)Solar radiation model considering cloud factors Due to the limitation of input parameters,it is convenient and accurate to analyze solar radiation for a certain period of time and day.For the monthly,seasonal,and annual solar radiation analysis,the model is insufficient.At this time,the advantages of the ArcGIS platform classic sunny model are reflected.Through the annual solar radiation analysis of the study area through the ArcGIS platform,the annual average solar radiation in Licheng District of Jinan City can reach1.16x103Kwh/m~2 under ideal sunny conditions.