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A platform for research: civil engineering, architecture and urbanism
Combined effects of visual-acoustic-thermal comfort in campus open spaces: A pilot study in China's cold region
https://orcid.org/0000-0002-4353-2651
Abstract To investigate the combined effects of thermal, acoustic and visual comfort in open spaces, this study selected five typical spaces on a university campus with five common sounds (broadcasting music, running water & birdsong, wind (a gentle breeze) & insects, crowds, and machines) in a cold region of China. 418 volunteers were asked to complete a subjective sensory questionnaire in a randomly combined audio-visual environment while meteorological measures were taken on-site. Four primary outcomes emerged. First, broadcasting music improved individual subjective thermal comfort votes (TCV). Under the moderate heat stress (0.5 ≤ thermal sensation vote [TSV] ＜ 2.5), a comfortable acoustic environment helped reduce individuals' subjective TSV and increase TCV. Second, the subjective acoustic comfort vote (ACV) of broadcasting music, wind & insect sound and machine noise decreased with the increase of Universal Thermal Climate Index (UTCI); respondents perceived crowds, machines and wind & insects louder when TCV = 2 and −2. Third, under no thermal stress (−0.5 ≤ TSV ＜ 0.5)/moderate heat stress (0.5 ≤ TSV ＜ 2.5), TSV increased with increasing illumination intensity (LUX). Under the strong heat stress (2.5 ≤ TSV ≤ 3), there was no significant difference in TCV among subjective visual comfort vote (VCV) levels. Finally, when the LUX class was neutral/slightly bright, respondents felt darker in thermo-neutrality. Additionally, VCV and TCV were positively correlated under each LUX class.
Graphical abstract Display Omitted
Highlights Combined effects of outdoor visual-acoustic-thermal comfort were investigated in Xi'an, China. Broadcasting music was conducive to improving individual TCV. Crowd and machine noise were louder when people felt thermally comfortable or uncomfortable. Visual comfort did not affect TSV and TCV in a hot environment. Respondents felt darker in thermo-neutrality when LUX was neutral/slightly bright.
Combined effects of visual-acoustic-thermal comfort in campus open spaces: A pilot study in China's cold region
https://orcid.org/0000-0002-4353-2651
Abstract To investigate the combined effects of thermal, acoustic and visual comfort in open spaces, this study selected five typical spaces on a university campus with five common sounds (broadcasting music, running water & birdsong, wind (a gentle breeze) & insects, crowds, and machines) in a cold region of China. 418 volunteers were asked to complete a subjective sensory questionnaire in a randomly combined audio-visual environment while meteorological measures were taken on-site. Four primary outcomes emerged. First, broadcasting music improved individual subjective thermal comfort votes (TCV). Under the moderate heat stress (0.5 ≤ thermal sensation vote [TSV] ＜ 2.5), a comfortable acoustic environment helped reduce individuals' subjective TSV and increase TCV. Second, the subjective acoustic comfort vote (ACV) of broadcasting music, wind & insect sound and machine noise decreased with the increase of Universal Thermal Climate Index (UTCI); respondents perceived crowds, machines and wind & insects louder when TCV = 2 and −2. Third, under no thermal stress (−0.5 ≤ TSV ＜ 0.5)/moderate heat stress (0.5 ≤ TSV ＜ 2.5), TSV increased with increasing illumination intensity (LUX). Under the strong heat stress (2.5 ≤ TSV ≤ 3), there was no significant difference in TCV among subjective visual comfort vote (VCV) levels. Finally, when the LUX class was neutral/slightly bright, respondents felt darker in thermo-neutrality. Additionally, VCV and TCV were positively correlated under each LUX class.
Graphical abstract Display Omitted
Highlights Combined effects of outdoor visual-acoustic-thermal comfort were investigated in Xi'an, China. Broadcasting music was conducive to improving individual TCV. Crowd and machine noise were louder when people felt thermally comfortable or uncomfortable. Visual comfort did not affect TSV and TCV in a hot environment. Respondents felt darker in thermo-neutrality when LUX was neutral/slightly bright.
Combined effects of visual-acoustic-thermal comfort in campus open spaces: A pilot study in China's cold region
https://orcid.org/0000-0002-4353-2651
Abstract To investigate the combined effects of thermal, acoustic and visual comfort in open spaces, this study selected five typical spaces on a university campus with five common sounds (broadcasting music, running water & birdsong, wind (a gentle breeze) & insects, crowds, and machines) in a cold region of China. 418 volunteers were asked to complete a subjective sensory questionnaire in a randomly combined audio-visual environment while meteorological measures were taken on-site. Four primary outcomes emerged. First, broadcasting music improved individual subjective thermal comfort votes (TCV). Under the moderate heat stress (0.5 ≤ thermal sensation vote [TSV] ＜ 2.5), a comfortable acoustic environment helped reduce individuals' subjective TSV and increase TCV. Second, the subjective acoustic comfort vote (ACV) of broadcasting music, wind & insect sound and machine noise decreased with the increase of Universal Thermal Climate Index (UTCI); respondents perceived crowds, machines and wind & insects louder when TCV = 2 and −2. Third, under no thermal stress (−0.5 ≤ TSV ＜ 0.5)/moderate heat stress (0.5 ≤ TSV ＜ 2.5), TSV increased with increasing illumination intensity (LUX). Under the strong heat stress (2.5 ≤ TSV ≤ 3), there was no significant difference in TCV among subjective visual comfort vote (VCV) levels. Finally, when the LUX class was neutral/slightly bright, respondents felt darker in thermo-neutrality. Additionally, VCV and TCV were positively correlated under each LUX class.
Graphical abstract Display Omitted
Highlights Combined effects of outdoor visual-acoustic-thermal comfort were investigated in Xi'an, China. Broadcasting music was conducive to improving individual TCV. Crowd and machine noise were louder when people felt thermally comfortable or uncomfortable. Visual comfort did not affect TSV and TCV in a hot environment. Respondents felt darker in thermo-neutrality when LUX was neutral/slightly bright.
Combined effects of visual-acoustic-thermal comfort in campus open spaces: A pilot study in China's cold region
Geng, Yubo (author) / Hong, Bo (author) / Du, Meng (author) / Yuan, Tingting (author) / Wang, Yanbo (author)
Building and Environment ; 209
2021-12-03
Article (Journal)
Electronic Resource
English
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