Research On Natural Ventilation Design Of Teaching Building Of Middle And Primary Schools In Changsha Based On CFD Technology

Natural ventilation is an ancient ventilation technology,has the advantages of energy saving,health and ecology.Now with the continuous improvement of living standards,the use of air conditioning for indoor thermal environment is becoming more and more common.But the air conditioning will not only harm to people’s physical and mental health,also consume large amounts of energy,the ecological unbalance,environmental pollution,climate change and other hazards,or even directly affect the survival of mankind.Teaching Building is the main architecture of primary and secondary schools,the indoor thermal environment is comfortable or not which is directly related to the physical and mental health of students and the learning efficiency.Unfortunately,for a too long time,the indoor thermal environment of classroom is not paid too much attention.In this paper,the primary and secondary schools teaching building as the research object,by using the method of theoretical research combined with simulation software,from the angle of building design makes a tentative discussion on primary and secondary schools teaching building design of natural ventilation,hoping to put forward effective strategies for primary and secondary schools teaching building of natural ventilation design,and to provide a good and comfortable study environment life for the primary and middle school students.The main content of this paper is divided into five chapters.The first chapter discuss application significance and the development potential of natural ventilation under the research background of the energy and green building design concept,and points out the object,purpose and significance of research at the same time,the research methods and thesis framework;The second chapter first describes the theory of natural ventilation,including the principle and the way of ventilation,on this basis summarizing the application of natural ventilation in Hunan traditional architecture and in modern school architecture;The third chapter is on the current status of natural ventilation research analysis of the primary and secondary schools’s teaching building in Changsha,including the indoor thermal environment of subjective feeling,such as temperature,humidity,and the status of the primary and secondary schools teaching building natural ventilation design,and pointing out the problems and the reasons,and analyzing the potential of natural ventilation of Changsha;The fourth chapter discusses building layout and open space,water,vegetation and other environmental factors influence on natural ventilation from the view of the campus building overall layout and the environmental factors;The fifth chapter put forward the strategies of the natural ventilation design maintenance structure such as doors and windows,walls,roof and auxiliary system impacted natural ventilation from the perspective of teaching building,and use Airpak to analyze and optimize natural ventilation of construction example;The last is the conclusion part,according to the geographical characteristics of Changsha and the climate characteristics of hot summer and cold winter,summing up suitable natural ventilation design method of primary and secondary schools teaching building in Changsha.