Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan

Kuniaki Mihara; Hiroshi Yoshino; Norie Takizawa; Takashi Kurabuchi; Satoru Muramatsu; Kazukiyo Kumagai; Miyuki Noguchi; Yukio Yanagisawa

Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan

Kuniaki Mihara, Hiroshi Yoshino, Norie Takizawa, Takashi Kurabuchi, Satoru Muramatsu, Kazukiyo Kumagai, Miyuki Noguchi, Yukio Yanagisawa

Institute of Liberal Arts and Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This study aims at investigating the actual conditions of indoor environment in schools in order to obtain fundamental information for proper ventilation design for buildings. Indoor environment of two new elementary schools in Tohoku district of Japan was investigated for a week in the winter of 2005. Temperature and humidity, concentrations of carbon dioxide (CO ₂), ventilation airflow rates, concentrations of chemical substances, and the opening condition of the windows and doors were measured and recorded in the three classrooms of each school. The CO ₂ concentration was higher than 1500 ppm in many hours due to the lack of enough ventilation in classroom and corridor. Exhaust airflow rate was only 10 percent of the design values. This is due to no maintenance of the ventilation systems and no cleaning of filters. It was observed that meshes for protecting insect of the outlet of exhaust ducts. Maintenance of ventilation system is very important in order to increase exhaust airflow rate and improve indoor air quality. Fresh air was supplied 80 percent from the windows and doors facing corridor by passive method. But air supply from the corridor should be avoided if the air along corridor would be contaminated.

Original language	English
Title of host publication	IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings
Subtitle of host publication	Sustainable Built Environment
Pages	639-644
Number of pages	6
Publication status	Published - 2007 Dec 1
Event	6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007 - Sendai, Japan Duration: 2007 Oct 28 → 2007 Oct 31

Publication series

Name	IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment
Volume	1

Other

Other	6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007
Country	Japan
City	Sendai
Period	07/10/28 → 07/10/31

Keywords

Airflow rate
Carbon dioxide
Elementary school
School buildings

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment

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Mihara, K., Yoshino, H., Takizawa, N., Kurabuchi, T., Muramatsu, S., Kumagai, K., Noguchi, M., & Yanagisawa, Y. (2007). Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan. In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment (pp. 639-644). (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment; Vol. 1).

Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan. / Mihara, Kuniaki; Yoshino, Hiroshi; Takizawa, Norie; Kurabuchi, Takashi; Muramatsu, Satoru; Kumagai, Kazukiyo; Noguchi, Miyuki; Yanagisawa, Yukio.

IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment. 2007. p. 639-644 (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Mihara, K, Yoshino, H, Takizawa, N, Kurabuchi, T, Muramatsu, S, Kumagai, K, Noguchi, M & Yanagisawa, Y 2007, Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan. in IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment. IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, vol. 1, pp. 639-644, 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment, IAQVEC 2007, Sendai, Japan, 07/10/28.

Mihara K, Yoshino H, Takizawa N, Kurabuchi T, Muramatsu S, Kumagai K et al. Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan. In IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment. 2007. p. 639-644. (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment).

Mihara, Kuniaki ; Yoshino, Hiroshi ; Takizawa, Norie ; Kurabuchi, Takashi ; Muramatsu, Satoru ; Kumagai, Kazukiyo ; Noguchi, Miyuki ; Yanagisawa, Yukio. / Indoor air quality and thermal environment of elementary schools in winter in Tohoku District of Japan. IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment. 2007. pp. 639-644 (IAQVEC 2007 Proceedings - 6th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings: Sustainable Built Environment).

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