Research On The Comfort Of External Space Environment Of Primary And Secondary Schools In Longdong Area Based On Microclimate

Under the dual background of developing the concept of open education and actively building a resource-saving society,higher requirements are required for the space environment of running schools in educational buildings.The design concepts and methods of primary and secondary school buildings have become the focus of national attention,including creating a safe and healthy external space environment for primary and secondary school students.However,on the one hand,campus construction in China generally presents a trend of high-density development,and the site microclimate of the building base changes with the change of building density,thus adversely affecting the comfort level of the external space environment.On the other hand,air pollution leads to the phenomenon of "urban heat island" which seriously affects the quality of outdoor environment.In addition,coal burning is mainly used for central heating in winter and spring in Longdong area,which causes more particle pollutants than industrial pollution such as traffic.In addition,longdong area is close to hexi area with frequent sandstorms,and the special geographical location aggravates the pollution of external space environment,seriously affects the comfort level of outdoor activity space of primary and secondary school students and reduces the activity duration,which highlights the contradiction of friendly and healthy development of external space of primary and secondary schools in Longdong area.Therefore,this study takes the external space environment of primary and secondary schools in this region as the research object.Based on the microclimate,en VI-Met software is used to simulate and analyze the influence of natural factors,building subjects,technical means and green vegetation on the comfort level of external space environment.The research is mainly divided into the following three parts:(1)First,analyze the problems and influencing factors of the external space environment of primary and secondary schools in Longdong area,focusing on the actual measurement and investigation of natural factors,building main bodies,technical means,green vegetation,etc.,and select actual cases for the actual measurement and simulation of the external space environment microclimate,and then compare and verify the simulated value and the measured value and analyze the error,which lays a foundation for the microclimate simulation analysis of the external space environment of primary and secondary schools in Longdong area;(2)Secondly,based on the external space environment data of primary and secondary schools in Longdong from 9:00 am to 6:00 pm,simulations were carried out from four aspects: natural factors,building main body,technical means,green vegetation,etc.The external space environment of the primary school has problems such as low greening rate,inappropriate material of the underlying surface,and unreasonable outer protective structure,which affect the microclimate in the building base,thereby affecting the physical and mental health of primary and secondary school students;(3)Finally,the corresponding external space environment comfort design strategies are proposed from four aspects,such as natural factors,building main body,technical means,and green vegetation of primary and secondary schools in Longdong area,and actual cases are selected for validity verification.The simulation results show that It has a significant effect on improving the microclimate of the external space environment of primary and secondary schools.This research can not only clarify the complexity of the external space environment of primary and secondary schools in Longdong area in theory,but also guide the construction of primary and secondary schools in the area,and finally achieve the development goal of safety and health of the external space environment of primary and secondary schools in Longdong area.