Field study on effect of large temperature steps on thermal comfort and physiological response in severe cold climate

IF 7.1 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Fanzhuo Zhou , Zhaojun Wang , Yuxin Yang , Chang Liu , Jia Zhao
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Abstract

Big environmental difference between the artificial indoor environments and the outdoor environments affects human comfort and physiological responses. This study examines the dynamic changes in human psychological and thermal responses to sudden, large temperature differences under three indoor conditions: slightly warm, neutral, and slightly cold. The similarities and differences between field studies and existing laboratory research were also analyzed.
The results indicated that the indoor-outdoor temperature differences under slightly cold, neutral, and slightly warm conditions were 24.5 °C, 32.6 °C, and 39 °C. Environmental differences between indoor and outdoor conditions were influenced by various factors, including temperature, air speed and so on. Human thermal responses differed significantly among the three conditions (P < 0.01). Thermal sensation vote (TSV), thermal comfort vote (TCV), and skin temperature showed great changes after the environmental shift. Skin temperature fluctuated more during down-step, while heart rate and heart rate variability (HRV) exhibited greater changes during up-step in this test. In real-world scenarios, human thermal responses were influenced by temperature, air speed, and human behavior, resulting in deviations from laboratory findings. Furthermore, a time-dependent model for skin temperature and TSV was developed, revealing that thermal sensation changes more rapidly than skin temperature during abrupt shifts from cold to near-neutral environments.
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来源期刊
Building and Environment
Building and Environment 工程技术-工程:环境
CiteScore
12.50
自引率
23.00%
发文量
1130
审稿时长
27 days
期刊介绍: Building and Environment, an international journal, is dedicated to publishing original research papers, comprehensive review articles, editorials, and short communications in the fields of building science, urban physics, and human interaction with the indoor and outdoor built environment. The journal emphasizes innovative technologies and knowledge verified through measurement and analysis. It covers environmental performance across various spatial scales, from cities and communities to buildings and systems, fostering collaborative, multi-disciplinary research with broader significance.
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