Abstract:

In order to evaluate the heat strain level of outdoor workers in high temperature environments, a thermal response model was developed based on the Tanabe 65 thermal physiological model and principles of heat transfer by modifying basal metabolic rate and human surface area of the original model. The experimental data in the literature and the Tanabe model were used to verify the effectiveness of the model. The results show that the predicted results of the high temperature human thermal reaction model established under different solar radiation intensities are in good agreement with the experimental results. In an extreme environment of 36 ℃ and high solar radiation intensity, the maximum difference between the simulated value of core temperature and the measured value is less than 0.24 ℃, and the maximum difference between the simulated value of average skin temperature and the measured value is less than 0.3 ℃, which is more accurate than the classic Tanabe model. Thus, the established model can be used to predict human physiological parameters such as human core temperature and skin temperature in hot environments in the presence of solar radiation, and provide reference for the safety assessment of outdoor workers.

Key words: solar radiation intensity, high temperature, human thermal response, radiation heat transfer, core temperature, skin temperature