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Buildings 2015, 5(2), 310-317;

Field Observation of Cooling Energy Savings Due to High-Reflectance Paints

Department of Architecture, Graduate School of Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Fitsum Tariku
Received: 9 March 2015 / Revised: 8 April 2015 / Accepted: 10 April 2015 / Published: 20 April 2015
(This article belongs to the Special Issue Building Envelope Design and Performance)
Full-Text   |   PDF [574 KB, uploaded 20 April 2015]   |  


Cooling energy savings in a building with the roof coated with high-reflectance paint are examined. It is difficult to recognize such savings using the data observed hourly. Among the factors assumed to affect cooling energy load are: (1) internal heat generation, (2) set temperature, and (3) weather conditions. By analyzing the relationship between indoor-outdoor air temperature difference (averaged) and electric power consumption (integrated) of the air conditioner in the building over a day, the reduction in electric power consumption due to the use of a high-reflectance paint coating is estimated at approximately 72 Wh·m−2·day−1. View Full-Text
Keywords: high-reflectance paint; cooling energy saving; roof high-reflectance paint; cooling energy saving; roof

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Takebayashi, H.; Yamada, C. Field Observation of Cooling Energy Savings Due to High-Reflectance Paints. Buildings 2015, 5, 310-317.

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