abstract
Hot and humid environments are prevalent in certain workplaces, such as deep mines, aviations, military
facilities and so on. When working in these environments, heat strain may be produced on the human
body, and the work productivity and human health will be affected, so it is necessary to study the impact
mechanism caused by the influencing factors on the human body. In this paper, a climate chamber was
built to simulate the hot and humid environments. The multiple regressions of physiological parameters
related to temperature and relative humidity were obtained, and the combined effect caused by temperature
and relative humidity on the human physiological responses was proven. The values of combined
effect, temperature effect and humidity effect were quantified, and then the work effect was
added. Finally, considering the combined effect between temperature and relative humidity, the
enthalpy of air was adopted to reflect the effect of these two environment factors comprehensively. The
study in this paper helps people understand the effects caused by environment and work intensity on
human strain better and it provides a practical method for the future research.
abstractHot and humid environments are prevalent in certain workplaces, such as deep mines, aviations, militaryfacilities and so on. When working in these environments, heat strain may be produced on the humanbody, and the work productivity and human health will be affected, so it is necessary to study the impactmechanism caused by the influencing factors on the human body. In this paper, a climate chamber wasbuilt to simulate the hot and humid environments. The multiple regressions of physiological parametersrelated to temperature and relative humidity were obtained, and the combined effect caused by temperatureand relative humidity on the human physiological responses was proven. The values of combinedeffect, temperature effect and humidity effect were quantified, and then the work effect wasadded. Finally, considering the combined effect between temperature and relative humidity, theenthalpy of air was adopted to reflect the effect of these two environment factors comprehensively. Thestudy in this paper helps people understand the effects caused by environment and work intensity onhuman strain better and it provides a practical method for the future research.
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