aalto1 untyped-item.component.html
Local thermal response differences due to sex and BMI among older adults in warm environments
Loading...
Access rights
openAccess
CC BY
CC BY
Creative Commons license
Except where otherwised noted, this item's license is described as openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
17
Series
Building and Environment, Volume 282
Abstract
Individual differences in thermal comfort among older adults may arise owing to sex and body mass index (BMI), leading to different preferred settings for indoor parameters in thermal environments. Meanwhile, providing automatic control strategies for personal comfort systems is very important for the elderly because of their reduced sensitivity and mobility. Thus, this study recruited 26 older adults to join climatic chamber experiments that included the use of local cooling devices at five thermal conditions: 26 °C, 40 % relative humidity (RH); 28 °C, 60 %; 29 °C, 40 %; 32 °C, 50 %; and 33 °C, 40 %. We introduced three types of local cooling devices: a table fan, an evaporative cooling device, and an air-cooled jacket. During the experiment, we monitored the participants' use of these cooling devices and recorded their skin temperatures and thermal perception votes. Notably, differences in thermal responses between the sexes were more pronounced than those between different BMI groups. There were significant differences in torso and lower limb skin temperatures as well as tympanic temperatures between males and females. There were substantial individual variations in thermal preferences and device usage behaviors. Generally, the participants’ device usage behavior was consistent with their thermal sensations and correlated with the mean skin temperatures recorded 5 min prior. We trained the long short-term memory (LSTM) model to predict individual device usage and found it was capable of effectively modeling individual device usage when the input variables included the head and wrist skin temperatures and device speed, achieving an accuracy of 90 %.
Description
Publisher Copyright: © 2025
Other note
Citation
Chen, M, Younes, J, Farahani, A V, Kilpeläinen, S, Kosonen, R, Ghaddar, N & Melikov, A K 2025, 'Local thermal response differences due to sex and BMI among older adults in warm environments', Building and Environment, vol. 282, 113275. https://doi.org/10.1016/j.buildenv.2025.113275