| Since the peaceful liberation of Tibet,the level of economic development has been greatly improved with the strong support of the central government,and the education of Tibet has also witnessed dramatic changes,and the education environment and quality have been continuously improved.However,students in colleges and universities set higher demand for the quality of dormitories.A good accommodation environment is an important condition to improve study efficiency and an important guarantee to talents developments in Tibet.The indoor thermal environment of dormitory is closely related to geographic and climatic conditions,building layout and living habits.Based on the demand of indoor thermal comfort,this paper uses questionnaire survey,instrument measurement,software simulation and other methods to investigate the current situation of college student dormitory,focusing on the factors affecting indoor thermal comfort,then proposes the optimal design of indoor thermal comfort of building and discusses the design method of spatial environment for indoor comfort,and as a result,provides reference for the design of indoor comfort of college student dormitory in Lhasa.The specific research contents and results are as follows.(1)Field research and questionnaire surveys were conducted in six colleges and universities in Lhasa in winter and summer of 2021 to collect data on building layout,number of indoor occupants,and indoor thermal comfort.Samples were selected for field measurements in summer and winter respectively.The author analyzes the current situation and influencing factors of thermal comfort through data collation,finding out that the range of indoor temperature,humidity and wind speed which is comfortable in summer and students are satisfied with the indoor thermal environment of dormitories;While for the winter season,student dormitories are centrally heated with suitable temperature,but the relative humidity is below 30%,very dry and need humidification.(2)The data indicate that for 80% of participants the acceptable indoor temperature ranges from 17.4℃ to 28.3℃ under natural ventilation conditions in summer;the neutral temperature is 22.8℃,where the neutral temperature for male students is higher than that for female students,and the neutral temperature for Han Chinese students is higher than that for Tibetan students.Under the central heating conditions in winter,for 80% of the participants,the acceptable indoor operating temperature ranges from 14.7 ℃ to 27.8 ℃;the neutral temperature is 21.3℃.The measured neutral temperature of female students is lower than that of male students.(3)Energyplus is employed to simulate and calculate indoor and outdoor spaces for different building orientations,space sizes,floors and building parts,the impact of building design on indoor thermal comfort is further clarified and optimized design strategies are proposed. |
