改善室外高温环境作业人员热舒适的实验研究

Experimental Research on Improving the Thermal Comfort of Workers in Outdoor High Temperature Environment

为了提高夏季室外高温日晒环境下作业人员的热舒适,将降温处理后的空气沿通风管路送入衣下空间,改善人体衣下微环境,通过采用真人实验的方式分析了通风温度与人体主观热舒适、热感觉之间的关系。结果表明,在通风与不通风的两种工况下,人体平均皮肤温度在10分钟左右趋于稳定,通风后人体主观热感觉、热舒适得到明显改善,送风温度为26℃时人体冷感觉明显,室外30℃及以上温度送风对于热感觉的改善效果不明显,通风温度为28℃时人体主观热感觉趋于“中性”,热舒适投票趋于“舒适”,通风效果最佳。

In order to improve the thermal comfort of the workers in the outdoor high temperature and sun environment in summer,the cooled air is now sent to the space under the clothes along the ventilation pipe to improve the microenvironment under the human clothes.The ventilation temperature and the relationship between the subjective thermal comfort and thermal sensation of the human body.The results show that the average skin temperature of the human body tends to be stable in about 10 minutes under the two working conditions of ventilation and nonventilation,and the subjective thermal sensation and thermal comfort of the human body are significantly improved after ventilation.The body's cold sensation when the air supply temperature is 26℃ obviously,outdoor air supply at a temperature of 30℃and above has no obvious improvement effect on thermal sensation.When the ventilation temperature is 28℃,the subjective thermal sensation of the human body tends to be"neutral",the thermal comfort vote tends to be"comfortable",and the ventilation effect is the best.