The Analysis Of Thermal Comfort And Dynamic Working Efficiency In Different Transient Thermal Environments In Summer

In today’s society,the research on human thermal comfort and human behavior in non-steady-state environments has become the main direction in the field of thermal comfort research.As the leading factor of indoor environment,thermal environment is one of the most important influencing factors of indoor environmental quality.it affects the comfort of the personnel and the n the work efficiency by controlling the temperature,which is attracting more and more people are concerned.At present,many studies are based on human thermal comfort and work efficiency under long-term exposure to a steady-state thermal environment.However,there are few researches on short-term exposure to dynamic temperature abrupt thermal environment.After undergoing temperature transient,the influences of cool stimulation by local ventilation on the thermal sensations and work productivity are also to be studied.In the summer of August 2018,this article used artificial climate space to create different temperature abrupt environments,and comprehensively studied temperature abrupt changes in short-term exposure to thermal environments from human skin temperature,human thermal sensation,and thermal comfort.Staff productivity.The experiment was conducted in the summer of August 2018,using artificial climate space to create different temperature abrupt environments.Based on the three aspects of the average human skin temperature,human thermal sensation and thermal comfort,and the work efficiency of personnel,this paper comprehensively studies the changes in human thermal comfort and work efficiency after a short-term exposure to thermal changes in temperature.Eighteen college students were invited to participate in the experiment of the work efficiency system study.Nine boys and nine girls each created three different mutation temperature differences(34-22 ℃,34-26 ℃,34-30 ℃).Sudden changes in environment,and sudden changes in temperature in high temperature and uncomfortable environment(30 ℃)using a desktop fan for local cooling.The experiment lasted 90 minutes,including the preparatory phase and the experimental phase.After experi encing sudden temperature changes,while filling in the subjective questionnaire,a total of 3 rounds of 3 cognitive tests were performed.The human psychological subjective factors,physiological and objective responses were combined with cognition.A related test of the ability test proposes a quantitative method to evaluate the influence of indoor thermal environment on the work efficiency of personnel.(1)By analyzing the regulation mechanism of the human nervous system on environmental stress,a model of the effect mechanism of personnel work efficiency was established,and the influence of indoor thermal environment on the work efficiency of personnel was classified into three aspects: subjective evaluation,neurophysiological response and cognitive a bility and presents a systematic,quantitative approach to assess the impact of indoor environmental comfort for staff efficiency.(2)From summer high temperature(34 ° C)environment to 22 ° C,26 ° C,30 ° C sudden changes in temperature,the impact of thermal environment on personnel work efficiency also depends on the type of work task.Different work tasks under the same temperature background The changing results and the response results of cognitive ability are different.The thermal experience befo re the mutation has a significant effect on the "cold transcendence" of the human body after the cooling mutation,which makes the body feel hot,skin temperature,and thermal comfort.High,medium,and low temperature conditions have different impacts on work efficiency,and the same work background has different changes in work efficiency at different times under the same temperature background.(3)Under the conditions of warm and uncomfortable high temperature,explore the abrupt thermal environment,cooperate with the human body’s thermal perception and work performance under the cooling mode of desktop fans.Experiments were performed at high temperature(34-30 ℃),and a desktop fan was used for cooling in a 30 ℃ hot environment for comparison.The exp eriment is to study the influence of thermal environment on human productivity,and to consider the individual differences in indoor thermal perception and the complexity of the thermal environment,and to study the acceptable degree and range of air veloc ity at high background temperature.It is expected that this study could help explore the thermal response characteristics and neurobehavioral capabilities of office staff by dynamically adjusting the indoor temperature,and then analyzes the degree of imp act on work efficiency based on the above two response characteristics.In order to improve the working environment and dynamically adjusts the i ndoor temperature in the future,provide a theoretical basis for indirectly improve the efficiency of office staff.