Descriptive epidemiology of winter indoor and outdoor temperatures and their relationships based on SWH survey

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  • HOSHI Tanji
    Tokyo Metropolitan University
  • IKAGA Toshiharu
    Department of System Design Engineering, Faculty of Science and Technology, Keio University
  • UMISHIO Wataru
    Department of Architecture and Building Engineering, School of Environment and Society, Tokyo Institute of Technology
  • FUJINO Yoshihisa
    Department of Environmental Epidemiology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • ANDO Shintaro
    Department of Architecture, Faculty of Environmental Engineering, The University of Kitakyushu
  • YOSHIMURA Takesumi
    University of Occupational and Environmental Health

Bibliographic Information

Other Title
  • 冬季における住宅内室温と外気温の実態とその関連：SWH横断調査
  • トウキ ニ オケル ジュウタク ナイシツオン ト ガイキオン ノ ジッタイ ト ソノ カンレン : SWH オウダン チョウサ

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Abstract

<p>Objectives　The purpose of this study was to make clear the descriptive epidemiology and the relationship between the room temperature of living room, bedroom, dressing room, and outdoor during winter, based on the climate areas in Japan.</p><p>Methods　This study targeted 3,781 people, survey for 5 years from 2014, based on the Smart Wellness Housing (SWH) project, which was carried out nationwide with the support of the Ministry of Land, Infrastructure, Transport and Tourism. During winter, we recorded the outdoor temperature and living room, bedroom, and dressing room temperatures at 1 m above the floor and near the floor for two weeks. Covariance structure analyses were used to clarify the relationship between room temperature and outdoor temperature based on six climate areas in Japan. The analyses were performed using SPSS22.0 and AMOS22.0 for Windows.</p><p>Results　The temperature near the floor inside the house was lower than the room temperature at 1 m above the floor, and both the room and near the floor temperature in the morning tended to be the lowest. The temperature disparity between the dressing room and living room was the largest. Based on climate areas, the room temperature in the Area 2 was the highest, while the room temperature in the Area 4 was the lowest. The outdoor temperature was more closely associated with the room temperature near the floor than the room temperature at 1 m above the floor, especially in the southern Areas, except Area 7.</p><p>Conclusion　The temperature near the floor inside the house was lower than room temperature at 1 m above the floor. The temperature disparity between dressing room and living room was the largest. The room temperature and near the floor temperature were lowest in the energy-saving Area 4. The outdoor temperature was more closely associated with the room temperature near the floor than the room temperature at 1 m above the floor, especially in the southern Areas, except Area 7.</p>

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