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Open AccessArticle

Field Study on Nationality Differences in Thermal Comfort of University Students in Dormitories during Winter in Japan

1
Department of Architecture and Civil Engineering, Toyohashi University of Technology, Toyohashi 441-8580, Japan
2
Department of Architecture, Shizuoka Institute of Science and Technology, Shizuoka 437-8555, Japan
*
Author to whom correspondence should be addressed.
Buildings 2019, 9(10), 213; https://doi.org/10.3390/buildings9100213
Received: 7 August 2019 / Revised: 20 September 2019 / Accepted: 23 September 2019 / Published: 29 September 2019
Comfort in university dormitory buildings in Japan is under-investigated as compared to offices and residences. A winter field survey conducted in two university dormitories in Central Japan aimed at investigating the differences in thermal responses of occupants relative to nationality and; to estimate their neutral and comfortable temperature under identical climatic conditions. Acceptability of the indoor environment was invariably high. While evaluation and preference votes depended on nationality; thermal sensation vote did not. Both Japanese and non-Japanese subjects voted neutral at a mean indoor temperature of 22 °C. The estimated probability of voting neutral for Japanese subjects was highest (65%) from 19 °C to 22 °C, while for non-Japanese subjects it was highest (75%) at a wider range: From 19 °C to 24 °C. Japanese students were more sensitive of and more critical about their indoor environment as opposed to the internationals (adjusted regression coefficients 0.55/K and 0.20/K). Griffiths’ model estimated the comfortable temperature for non-Japanese subjects at a 2 °C wider range and at a 2 °C higher average than for Japanese subject. Neutral and comfortable temperatures observed and estimated in the study were split above and below the recommended temperature threshold of 20 °C for Japan in winter. View Full-Text
Keywords: dormitory buildings; field survey; winter season; neutrality; comfort dormitory buildings; field survey; winter season; neutrality; comfort
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MDPI and ACS Style

Draganova, V.; Tsuzuki, K.; Nabeshima, Y. Field Study on Nationality Differences in Thermal Comfort of University Students in Dormitories during Winter in Japan. Buildings 2019, 9, 213.

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