| As the main site of sports training,sports competition and sports teaching,the thermal environment of sports venues directly affects the comfort and health of the human body and the effect of sports.In this paper,xi 'an,a typical city in northwest China,was selected for the field experiment.Taking university students engaged in badminton as the research object,the quantitative influence of the thermal environment of sports venues in summer on the physiological cycle heat regulation and stress heat response of the subjects was analyzed.An evaluation model of thermal comfort is proposed,which is based on multiple factors such as subjective psychological sensation and objective physiological response.Based on the principle of thermal satisfaction,the subjective evaluation index of psychological sensation represented by thermal sensation,fatigue sensation and psychological expectation was established.Average human skin temperature,heart rate,blood pressure variation characterization of objective evaluation indexes of physiological reaction,simultaneously movement human body amenity and the double action mechanism of physiological health,percent of pass is offered to thermal satisfaction and health comfortable health evaluation,established the environmental temperature and the quantitative relationship between the motion human body comfortable health,the body needs to determine reasonable badminton temperature parameters of the recommended range.The main conclusions are as follows:(1)The ambient temperature has significant correlation with the subjectiveperception evaluation of sports body.The acceptable range of TSV is-1?TSV?1,i.e.26.7?-30.1?,which is considered as the acceptable ambient temperature by 90% of the subjects.Compared with ISO7730-2005 thermal comfort standard,the actual acceptable ambient temperature value of the subjects is higher.At the same time,the psychological expected temperature is higher than the neutral temperature,that is,the cold expected temperature(30.4?)is 2.4? higher than the neutral temperature(28?),suggesting that the human body has good tolerance to exercise in a thermal environment.In addition,the fitting relationship between the fatigue sensation evaluation and the ambient temperature was found that the subjects' fatigue degree was most significant when the temperature was higher than 31?.(2)The ambient temperature has a significant effect on the objective physiological response of the exercise body.Mean skin temperature,blood pressure and heart rate variation showed a trend of convergence.When the environment temperature is higher than 30 ?,the motor function and environment temperature synergy,which subjects to extremely hot state,fatigue behavior,the physical thermal stress is more intense,human body physiology can't meet the demand of sports,result in higher blood pressure,heart rate cannot continue,but the overall physical fitness in the normal range.(3)The recommended range of healthy thermal environment temperature parameters based on comfortThe neutral temperature can be used as the benchmark of the environment's influence on human body,and the PMV model based on the thermal neutral sensation is established based on the heat balance theory.The quantitative relationship between environmental temperature,thermal satisfaction rate and health qualification rate was analyzed,and the dissatisfaction rate of 10% subjects was proposed.Demand based on the human body thermal comfort and health efficiency double effect to satisfy for the principle,the subjects exercise behavior and comfortable environment temperature parameters of the recommended range for 27 ?-29 ?,the provisions in the international standard of the highestlimit of improve indoor environment temperature 2 ?,can effectively reduce the summer cooling energy consumption of air conditioning system,created the class building huge energy saving potential fully,and to improve sports building indoor thermal environment design standards provide a reference basis. |
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