Mao Yudong, Zhu Yongcheng, Guo Zhisheng, Zheng Zhimin, Fang Zhaosong, Chen Xiaohui
School of Civil Engineering, Guangzhou University, Guangzhou, China.
The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
Build Environ. 2022 Aug 15;222:109352. doi: 10.1016/j.buildenv.2022.109352. Epub 2022 Jun 29.
Since the outbreak of COVID-19, wearing personal protective equipment (PPE) has become increasingly common, especially for healthcare workers performing nucleic acid sample collection. A field experiment and questionnaire survey were conducted in a semi-open transition space of a university building in Guangzhou, southern China. Thirty-two subjects wore PPE to simulate nucleic acid sample collection, during which thermal parameters were recorded and subjective questionnaires were completed. The relationship between thermal sensation and thermal index was analyzed to determine the neutral temperature and comfort temperature zones. Subjects had higher requirements for thermal environment parameters when wearing PPE than when not wearing PPE, and were found to have statistically significant differences in thermal perception when wearing and not wearing PPE. Wearing PPE significantly raised the subjects' thermal and humidity sensations and restricted their airflow. Wearing PPE resulted in thermal discomfort for the subjects and a high unacceptability rate for environmental thermal parameters. The subjects wore PPE for an acceptable duration of approximately 1.5 h. The neutral operative temperatures were significantly lower when wearing PPE than when not wearing PPE, and the deviation from the neutral temperature was 9.7 °C. The neutral operative temperature was 19.5 °C and the comfort temperature zone was 17.4-21.5 °C when subjects wore PPE, demonstrating that subjects who wore PPE preferred lower temperatures. These results suggest that people who wear PPE for work, especially outdoors, should receive more attention to ensure thermal comfort and safety.
自新冠疫情爆发以来，佩戴个人防护装备（PPE）变得越来越普遍，尤其是对于从事核酸样本采集的医护人员。在中国南方广州的一所大学建筑的半开放过渡空间进行了一项现场实验和问卷调查。32名受试者佩戴个人防护装备模拟核酸样本采集，在此期间记录热参数并完成主观问卷。分析了热感觉与热指标之间的关系，以确定中性温度和舒适温度区间。受试者佩戴个人防护装备时对热环境参数的要求高于未佩戴时，且发现佩戴和未佩戴个人防护装备时在热感知方面存在统计学上的显著差异。佩戴个人防护装备显著提高了受试者的热感和湿度感，并限制了他们的气流。佩戴个人防护装备导致受试者感到热不适，且对环境热参数的不可接受率较高。受试者佩戴个人防护装备的可接受时长约为1.5小时。佩戴个人防护装备时的中性操作温度显著低于未佩戴时，与中性温度的偏差为9.7℃。受试者佩戴个人防护装备时，中性操作温度为19.5℃，舒适温度区间为17.4 - 21.5℃，这表明佩戴个人防护装备的受试者更喜欢较低的温度。这些结果表明，从事工作时佩戴个人防护装备的人，尤其是在户外工作的人，应得到更多关注，以确保热舒适和安全。
