Energy Saving Property of Heat-Reflective Coatings on Temporary Buildings

Abstract:

The energy saving of temporary buildings used heat-reflective coatings in cold region has been paid growing attention. Surface temperature and energy consumption were calculated by the temporary office building and factory building in Beijing. The buildings are color steel plate structure in this paper. The roofs and exterior walls of buildings were painted with heat-reflective coatings. The general solar reflectivity of roofs and exterior walls were about 26% and 22%; after the application of heat-reflective coatings the reflectivity increased to about 84% and 72%. Results demonstrated that the roofs have the best cooling effect, with the average surface cooling reaching 23.32°C in summer. The estimated energy savings of roof was about 9.95Wh/m² per day and the energy consumption reducing rate was up to 67.7% in summer. Considering the energy consumption increased in winter, heat-reflective coatings were only strongly advised to paint on roofs in cold region.

• Periodical: Materials Science Forum (Volume 814)
• Pages: 519-523
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.814.519
• Online since: March 2015
• Authors: Qiu Rui Lv, Qian Jin Mao, Ya Li Wang, Zi Ming Wang, Su Ping Cui
• Keywords: Building Energy Saving, Heat-Reflective Coating, Temporary Building

References

[1] LIU Ximing, HU Fei, LI Lei, WANG Yu, Summer urban climate trends and environmental effect in the Beijing area, Chinese J. Geophysics, 03(2006)689-697.

DOI: 10.1002/cjg2.875

[2] Hashem Akbari, Ronnen Levinson, Leo Rainer, Monitoring the energy-use effects of cool roofs on California commercial buildings, Energy and Buildings 37 (2005) 1007–1016.

DOI: 10.1016/j.enbuild.2004.11.013

[3] Kai L. Uemoto, Neide M.N. Sato, Vanderley M. John, Estimating thermal performance of cool colored paints, Energy and Buildings 42 (2010) 17–22.

DOI: 10.1016/j.enbuild.2009.07.026

[4] QIU Tong, Thermal Performance Evaluation of Solar Reflecting Coating, WALL & DESIGN, 10(2012)42-45.

[5] H. Akbari, S. Bretz, D. Kurn, J. Hanford, Peak power and cooling energy savings of high-albedo roofs, Energy Buildings 25 (1997)117–126.

DOI: 10.1016/s0378-7788(96)01001-8

[6] S. Konopacki, H. Akbari, L. Gartland, L. Rainer, Demonstration of energy savings of cool roofs, Lawrence Berkeley National Laboratory Report LBNL-40673, Berkeley, CA, (1998).

DOI: 10.2172/296885

[7] Hui Shen, Hongwei Tan, Athanasios Tzempelikos, Effect of Heat-reflective Insulation Coating on Exterior Walls of Building Energy Consumption in Summer, Energy and Buildings. 43 (2011) 573–580.

DOI: 10.1016/j.enbuild.2010.10.024

[8] GB50176-93. Thermal design code for civil building, (1993).