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Responses of human perception and skin temperature to directed thermal radiation in hot environments

机译：抗热环境中的人类感知和皮肤温度对热辐射的反应

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摘要

Directed thermal radiation (DTR) is a major factor affecting the health of people in hot environments. Understanding the effect of DTR is important for ensuring suitable environmental quality, and for enhancing safety and efficiency. In this study, 96 young healthy subjects (23.31 +/- 0.93 years, 172.50 +/- 7.21 cm, 62.41 +/- 6.32 kg) were exposed to two different air temperatures (34 degrees C and 37 degrees C), and a relative humidity of 60% in a climate chamber. During the experiment, three DTR conditions (0 kW/m(2), 1 kW/m(2) and 2 kW/m(2)) were chosen, and the subjects were instructed to run on treadmills at a speed of 4.5 km/h to stimulate moderately intense labor. Their skin temperatures, comprehensive thermal sensation (CTS), and fatigue perception were recorded during the experiments. The results showed that DTR significantly increases the local and overall skin temperatures. The impact of DTR on the subjects' skin temperatures was significant at the forehead, back of the hands, and chest, whereas it was insignificant at the tibia and calf. The mean skin temperature was 33.16 degrees C or 33.35 degrees C when the subjects experienced a neutral CTS in hot and wet environments under different DTR. The DTR also affected the CTS and fatigue perception of the subjects. The relationships between CTS and mean skin temperature as well as between CTS and the fatigue feeling score were found to be linear. In conclusion, this study suggests that an asymmetrical thermal radiation affects the preferred mean skin temperature and subjective perception. Therefore, reasonable monitoring and improvement measures are recommended for continuous work with moderate intensity in hot environments.
机译：定向热辐射（DTR）是影响热环境中人们健康的主要因素。了解DTR的效果对于确保适当的环境质量以及提高安全性和效率至关重要。在这项研究中，96名年轻健康受试者（23.31 +/- 0.93厘米，172.50 +/- 7.21厘米，62.41 +/- 6.32千克）暴露于两个不同的空气温度（34摄氏度和37℃）和相对气候室内60％的湿度。在实验期间，选择了三种DTR条件（0 kW / m（2），1kW / m（2）和2kW / m（2）），并指示受试者以4.5公里的速度在跑步机上运行/ h刺激中等强烈的劳动力。在实验期间记录了它们的皮肤温度，综合热敏感觉（CTS）和疲劳感知。结果表明，DTR显着增加了局部和整体皮肤温度。 DTR对受试者的皮肤温度的影响在额头，手背和胸部的额头上很重要，而它在胫骨和小牛上微不足道。当受试者在不同DTR下的热和潮湿环境中经历中性CTS时，平均皮肤温度为33.16摄氏度或33.35摄氏度。 DTR还影响了对受试者的CT和疲劳感知。发现CTS与平均皮肤温度以及CTS和疲劳感觉分数之间的关系是线性的。总之，本研究表明，不对称的热辐射会影响优选的平均皮肤温度和主观感知。因此，建议使用合理的监测和改进措施，以便在热环境中连续使用中等强度。

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  • 来源
    《Building and Environment》 |2021年第6期|107857.1-107857.13|共13页
  • 作者

    Zhang Shuai; Zhu Neng; Lu Shilei;

  • 作者单位

    Tianjin Univ Sch Environm Sci & Engn Tianjin 300072 Peoples R China|Tianjin Univ Tianjin Key Lab Built Environm & Energy Applicat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin 300072 Peoples R China|Tianjin Univ Tianjin Key Lab Built Environm & Energy Applicat Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin 300072 Peoples R China|Tianjin Univ Tianjin Key Lab Built Environm & Energy Applicat Tianjin 300072 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Hyperthermal environment; Thermal radiation; Skin temperature; Subjective perception; Human response;

    机译：高温环境;热辐射;皮肤温度;主观感知;人类反应;

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