The Research Of Outdoor Thermal Adaptation In Chongqing During Summer

Previous research on human thermal comfort and thermal adaptation mostlyconcentrated in the indoor environment, the research of outdoor environment arerelatively few, but outdoor space is also the important activities for people as indoor space.Moreover, with the development of the economy, the quality of people’s life has beenimproving constantly, the outdoor space also gradually becomes people’s importantactivities. Outdoor environment is the factor of influencing the comfort of outdooractivities and the mental state, but, with the intensification of the urban heat island andother human factors, the city’s outdoor thermal environment is gradually deteriorating.Therefore, to carry out the study on the urban thermal environment and thermaladaptation of the human body in outdoor thermal environment has a strong practicalsignificance.Outdoor environment is different with indoor environment, the factors of affectingthe outdoor environment is vorious, and have a great deal of volatility, at the same time anumber of factors still exist different degree of coupling. At present, the research onoutdoor thermal comfort and heat acclimation is less, because of the difference ofgeographical, cultural, and climate at the same time, the research of abroad and domesticresearch in other cities also cannot be directly applied to Chongqing area. Based on theoutdoor study of home and abroad, this paper has analyzed and summarized, carried outoutdoor human thermal adaptation in Chongqing during summer.This article carried out the survy of local hot wet environment of Chongqing in2012during summer, combined in-situ test and subjective questionnaire survey. After the test,the test datas are analyzed, found that Chongqing region city local outdoor thermalenvironment is relatively bad in summer, during the test the average outdoor temperatureis35.76℃, the highest reached40.8℃.Then, using SPSS statistical analysis software toanalyse the data combined with the survey questionnaire, set up Chongqing summeroutdoor human thermal sensation, humidity feeling and evaluation model, respectively.Through the analysis of the model, obtained the outdoor personnel "neutral" hottemperature (27.84℃) of chongqing area, as well asthe acceptable temperature range(23.91℃~31.77℃) and relative humidity range (33.29%~56.37%) and wind speedrange (0.34m/s~1.80m/s). On the basis of analysis of human thermal sensation andoutdoor thermal environment parameters, the relationship of the human thermal sensation and outdoor thermal environment has been established.According to the human body’s adaptation process of the heat moisture environment,combined with the body’s heat balance model and the thermal comfort of the adaptationtheory and the outdoor thermal environment conditions, to set summer outdoor thermaladaptation of the human body model, this model can response the body’s physical,psychological and behavior adaptation process of the outdoor thermal environment insummer outside. Subsequently, specific analyzes the outdoor personnel adaptive behaviorto the outdoor thermal environment, studied the impact of different outdoor exposuretime and gender differences on the human body’s adaptability, the thermal neutraltemperature of those people whose exposure time is in half an hour or more is higher0.75℃than those whose exposure time is in half an hour or less, the acceptable upperlimit of temperature is0.4℃higher, women’s thermal neutral temperature is0.68℃higher than men. Finally, according to the research results and the actual situation ofChongqing region, the strategies of improving Chongqing summer heat outdoor thermalenvironment have been put forward.