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Revisiting an overlooked parameter in thermal comfort studies, the metabolic rate

机译：回顾热舒适性研究中被忽视的参数，即代谢率

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摘要

Human metabolism is a fundamental and important aspect of thermal comfort prediction. However, to date, most previous thermal comfort studies tended to treat metabolic rate as a constant value that only depends on activity level without consideration of ambient thermal conditions. In this paper, we explore the impacts of indoor thermal conditions on occupants' metabolic rate and try to describe such impacts in a straightforward way. Climate chamber experiments, including both physiological measurements and subjective questionnaires, were conducted at temperatures ranging from cold to hot with two clothing insulation levels. The results indicate that human metabolic rate can be significantly affected by thermal conditions such as ambient temperature and clothing insulation. The changing trend of metabolic rate can be expressed as a second-order polynomial equation with actual thermal sensations or other predicted values. Generally, a neutral thermal sensation corresponds to the lowest metabolic value, while the metabolic rate increases when thermal sensation departs from neutral to the cold or warm side. For instance, the metabolic rate at a sensation of 'cold' is 16.6% higher than it is in 'neutral' sensation. These findings, especially the modified equations describing metabolic rate changes, can serve as useful reference for future thermal comfort studies. (C) 2016 Elsevier B.V. All rights reserved.
机译：人体代谢是预测热舒适性的基本和重要方面。然而，迄今为止，大多数以前的热舒适性研究倾向于将代谢率视为一个恒定值，该值仅取决于活动水平而不考虑环境热条件。在本文中，我们探讨了室内温度条件对乘员新陈代谢率的影响，并试图以一种简单的方式描述这种影响。气候室实验，包括生理测量和主观问卷，均在从冷到热的温度范围内进行，并具有两个衣物隔热等级。结果表明，人体代谢率会受到环境温度和衣物隔热等热条件的显着影响。代谢率的变化趋势可以表示为具有实际热感或其他预测值的二阶多项式方程。通常，中性的热感对应于最低的代谢值，而当热感从中性向冷或热的一侧偏离时，代谢率增加。例如，感觉为“冷”时的代谢率比“中性”时高16.6％。这些发现，尤其是描述代谢率变化的修正方程式，可以为将来的热舒适性研究提供有用的参考。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2016年第4期|152-159|共8页
  • 作者

    Luo Maohui; Zhou Xiang; Zhu Yingxin; Sundell Jan;

  • 作者单位

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Tsinghua Univ, Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China;

    Tongji Univ, Sch Mech Engn, Shanghai 200092, Peoples R China;

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China|Tsinghua Univ, Beijing Key Lab Indoor Air Qual Evaluat & Control, Beijing 100084, Peoples R China;

    Tsinghua Univ, Dept Bldg Sci, Beijing 100084, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Metabolic rate; Thermal comfort; Physiological parameters; Clothing insulation;

    机译：代谢率;热舒适度;生理参数;服装隔热;

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