Physiological Indicators of Thermal Comfort: A Comprehensive Approach Using the Metabolic-Based Predicted Mean Vote Index

被引：1
作者：
Laouadi, Abdelaziz [1 ]
机构：
[1] Construction Research Centre, National Research Council Canada, 1200 Montreal Road, Building M-24, Ottawa, K1A 0R6, ON
来源：
Buildings | 2024年 / 14卷 / 12期
关键词：
body temperature; core temperature; evaporative sweating rate; indoor environment; mean skin temperature; optimum clothing insulation; physiological response; shivering metabolic rate; thermal comfort; thermal sensation;
D O I：
10.3390/buildings14123861
中图分类号：
学科分类号：
摘要：
Current thermal comfort constructs are perceptional, and their relationships to the physiological responses are not fully understood. The latter are very important, not only to indicate personal comfort perception but also to protect personal health against cold and heat stresses. This paper combined a two-node bioheat model with the metabolic-based predicted mean vote index (MPMV) to uncover the relationships between the physiological responses and perceptional thermal sensation at steady-state conditions. The MPMV index accounts for sweating and non-shivering thermogenesis (NST) at the neutral comfort state and handles both core and skin cooling cases. Simulations were conducted for adults in typical indoor environment conditions. The physiological responses investigated included the body, core and mean skin temperatures, skin evaporative heat flux, shivering metabolic rate, and skin blood flow. The study revealed that only the mean skin temperature and skin blood flow can discriminate between comfort perception levels and can therefore be used alone or combined with other variables as alternative physiological indicators. The comfort range (MPMV within ±1) in terms of the mean skin temperature is maintained by regulatory sweating and/or NST and gets wider with increasing activity levels. The study also offered important insights for practical applications and future research. © 2024 by the author.
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