Study On Natural Ventilation Technology Strategy Of Corridor Teaching Building In Hot Summer And Cold Winter Area

In recent years,with the rapid development of the construction industry,the Ministry of housing and urban rural development of the people's Republic of China issued the "green building evaluation standard" and "green campus evaluation standard" in 2019,which put forward the norms and requirements for natural ventilation.Then in 2020,the new crown epidemic situation is rampant,and natural ventilation is particularly important.In this context,this paper focuses on the most common inner corridor teaching building in Colleges and universities,and takes Hefei,the capital of Anhui Province,as a representative to study the ventilation of the inner corridor teaching building in the hot summer and cold winter climate zone₂.Test the natural ventilation effect under different working conditions for the tracer gas experiment method,and according to the natural ventilation principle,put forward the natural ventilation optimization strategy of the inner Gallery teaching building,strive to meet the health and comfort,at the same time,use the natural ventilation to save energy and green development.In view of the uniqueness of the hot summer and cold winter climate area,this paper explores how to optimize the indoor wind environment of the inner Gallery teaching building by using the principle of natural ventilation.Firstly,according to the domestic and foreign literature,the technical strategies of natural ventilation are summarized and analyzed,and the optimization of natural ventilation is discussed from the design point of view.Then through the analysis of meteorological conditions in Hefei area,combined with CFD Simulation software is used to explore different forms of window opening and structural ways of auxiliary natural ventilation,such as the location and arrangement of high side window and wing wall wind guide for simulation and comparison;then,taking the existing college internal Gallery style investigated on the spot as an example,starting from the plane of the building,combining with CFD simulation to explore the impact of the length and transition space of the internal Gallery style on the indoor wind field;and then from the angle of the section In order to explore the influence of different sizes and locations on the indoor wind environment,it is proposed to optimize the indoor flow field by using high-rise space such as high staircase and horizontal air duct.At last,it is concluded that the best way to open the window is to open thesuspended window and the flat window.When the opening height of the inner window is 1.8m and 2.1m,it has the best effect on the indoor wind speed and air flow.For the optimization of building section,the use of high staircases and horizontal ducts can significantly improve the indoor wind environment.