Experimental Study On Outdoor Thermal Comfort Of University Campus In High Altitude Climate Area

As an important place for students’ activities and daily communication,the quality and comfort of college campus outdoor space has a direct impact on students’ psychological and physical health.The thermal comfort needs of College Students under different activity intensities are different,and the campus design of Tibet University lacks the theoretical basis of thermal comfort in relevant aspects.Therefore,under the unique high-altitude background,combined with the outdoor activity regulars and thermal comfort characteristics of college students,it is of great research value and social application value to optimize the outdoor space in high-altitude campus.Through the combination of field measurement and questionnaire,this paper makes an experimental study on the thermal comfort of College Students under different outdoor activity intensity of Tibet University in winter and summer of 2021.Through data analysis methods such as regression analysis and correlation analysis,this paper studies the thermal comfort characteristics of Tibetan College Students under different outdoor activity intensity of campus,and puts forward the thermal comfort optimization strategy under different activity intensity.This paper has five chapters.The research background and research status at home and abroad are put forword firstly,so as to summarize and propose the research significance and purpose、research content、research methods and research framework.At the beginning of the second chapter,the basic theory,influencing factors and evaluation methods of human thermal comfort are illustrated.In addition,the activity regular of college students,the gathering space under different activity intensity of Tibetan University campus,Lhasa meteorological conditions,the activity characteristics and thermal comfort state of Tibetan college students are summarized and analyzed through the form of network questionnaire and on-site investigation,which paves a theoretical foundation for the measured chapters.The third chapter is the measurement chapter.the measurement experimental scheme is introduced at first,and the last two sections are the statistical analysis of the subjective and objective data collected during the actual measurement.The thermal comfort characteristics of Tibetan College Students under different intensity activities are studied in the fourth chapter.By establishing various thermal comfort characteristic models,the neutral PET,comfortable PET and the highest acceptance PET of Tibetan College Students under different intensity activities are put forward.At the same time,the specific relationship between TSV and TCV are also compared and analyzed.The influencing factors and individual differences of subjective thermal response are analyzed in the fifth chapter,as well as the microclimate preference of Tibetan college students when they feel thermal comfort under each intensity.Then the spatial optimization strategies under different intensity activities are summarized.Finally,it is the conclusion and research deficiency of this paper.