Study On Local Thermal Characteristics Of Human Body In Medium-cold And Hot Building Environment

people rely too much on heating air conditioning,for a long time,the ability to adapt to the environment decline,to a certain extent,affect people’s health.This article explores the human body are often covered with clothes,in moderately hot and cold building environment affected by the size of the indoor environment temperature to through some way through natural adjustment methods such as to improve the body’s ability to adapt to the environment,from a certain extent reduce the dependence of the heating air conditioning for people,improve the people’s resistance.In modern society,people spend most of their time in the indoor environment of the comfort zone,and the influence of wind speed and relative humidity on human body is not significant.Therefore,the wind speed in this experiment design is static wind(no more than 0.25),and the relative humidity is 40% ~ 60%.The variable influence of the experiment is only indoor air temperature.The cold choose 19 ℃ to21 ℃,environment temperature,17 ℃,15 ℃,thermal environment temperature choice for 31 ℃,29 ℃,25 ℃,and 27 ℃.The skin temperature and skin heat flow of human body were tested.Meanwhile,subjective questionnaire survey was conducted to comprehensively study the significance and change trend of local parts of human body covered by clothes affected by the environment.The experimental data were analyzed by spass17.0 and excel.In the set test range,the test parameters reached stability within 30 min,and then the instrument carried out data measurement under different working conditions.The subjective questionnaire survey was conducted every 10 min in the data measurement process,and the temperature measurement time under each working condition was 1h.The test results show that in the medium cold and hot environment,the temperature has a significant impact on the change of human skin temperature and skin heat flow.The skin heat flow is very sensitive to the change of environmental temperature,and the human body is more sensitive to the cold environment than the hot environment.Due to the different physiological conditions of men and women,the temperature of men’s chest and back is higher than that of women in the cold environment.The skin temperature on the upper arms and thighs of women was higher than that of men inthe thermal environment.In this paper,the linear regression equation of the change of physiological parameters in the experimental range and the change of indoor environmental temperature in the medium cold and hot environment is established,which can be used to calculate and predict the local physiological parameters of human body within the given range of experimental conditions.At the same time,the correlation equations between human physiological parameters and subjective evaluation indexes were established,which can be used to predict the corresponding subjective evaluation indexes within the parameters of this paper.There are 83 pictures,31 tables and 61 references in this paper...