【摘要】 为向高温天气下户外工作者提供更准确的热安全预测，基于夏季室外测试数据，对比预测热应激(PHS)模型与热应变决策辅助(HSDA)模型的预测性能，选取较优的HSDA模型进行修正；选择平均辐射温度为修正对象，利用试验值与预测值之间的误差函数计算修正系数，确定修正HSDA模型；使用修正模型预测高温天气下户外工作者的安全时间与失水量。结果表明：室外高温环境下HSDA模型的核心温度预测精度高于PHS模型；平均辐射温度的修正系数为0.614,修正后模型的预测精度可提高约58.5%;随着环境参数的升高，户外劳动者的安全时间逐渐变短，并且普遍低于1 h,而失水量则逐渐变高，甚至超过标准体重的7.5%(4 462.5 g/h)。更多还原

【Abstract】 In order to provide a more accurate thermal safety prediction for outdoor workers in high temperature weather, PHS model was compared with HSDA model, and the HSDA model was selected for modification. Then the average radiation temperature was selected as the correction object. The error function between the measurement and predicted values was used to derive the correction coefficient and obtain the modified HSDA model. Finally, the modified model was used to predict outdoor workers’ safety time and water loss under high temperature weather. The results indicate that the core temperature prediction accuracy of HSDA model is higher than that of the PHS model in the outdoor high temperature environment. The correction factor of the average radiation temperature is determined to be 0.614, and the prediction accuracy of HSDA model can be improved by about 58.5% after modification. With the increase of the environmental parameters, the safety time of outdoor workers gradually decreases and is generally lower than 1 h. The water loss gradually increases and even exceeds 7.5% of the standard body weight(4 462.5 g/h).更多还原