KIEAE Journal

Korea Institute of Ecological Architecture and Environment (한국생태환경건축학회)
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Reduction in Indoor and Outdoor Temperature of Office Building with Cool Roof

쿨루프 적용에 따른 업무용 건물의 내·외부 온도 저감 효과

  • Song, Bong-Geun (Disaster Scientific Investigation Division, National Disaster Management Research Institute) ;
  • Kim, Gyeong-Ah (Dept. of Environmental Engineering, Changwon National Univ.) ;
  • Park, Kyung-Hun (Dept. of Environmental Engineering, Changwon National Univ.)
  • Received : 2016.09.19
  • Accepted : 2016.11.13
  • Published : 2016.12.31
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Abstract

Purpose: This study aims to identify the effect of temperature reduction by the application of cool roof coatings to Changwon City Hall in South Gyeongsang Province. The indoor and outdoor temperatures of the cool roofing building were analyzed and compared to that of an existing building with green-colored roof coated with waterproof polyurethane. Method: The surface temperatures and reflectivity of rooftops, surface temperatures of ceilings and the interior, and outdoor temperature and humidity of the two aforementioned buildings were measured from June to September in 2014. The measurements were taken every 10 min. Result: The surface temperature of the building with the cool roof was lower by a maximum of $9^{\circ}C$ with the reflectivity of the rooftop at an average of 0.55, which is higher than that of the building with green polyurethane by approximately 0.3. The temperature of the ceiling inside the building with the cool roof was about $1{\sim}2^{\circ}C$ lower than that of the ordinary building. Also, the indoor temperature of the office with cool roof coatings was about $0.5{\sim}1.0^{\circ}C$ lower than that of the office with green-colored roofing building. The results show that cool roof coatings can lower the temperature of buildings. In the next research, the reduction in consumption of energy for air conditioning will be investigated by utilizing building energy simulation tools.

Keywords

References

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