Highly reflective coatings for interior and exterior steel cladding and the energy efficiency of buildings

Ali Joudi, Harald Svedung, Chris Bales and Mats Rönnelid

Applied Energy, 2011, vol. 88, issue 12, 4655-4666

Abstract: The effect of surface heat-radiation properties of coil-coated steel cladding material on the energy efficiency of buildings in Nordic climate is addressed by parallel temperature and energy usage measurements in a series of test cabins with different exterior solar reflectivity and interior thermal reflectivity. During one year, a number of one- or two-week experiments with air conditioner cooling and electrical floor heating were made while logging air-, radiation- and surface temperatures, energy consumption and weather conditions. Measurements show significant energy savings in the test cabins by the use of high thermal reflectivity interior surfaces both during heating and cooling and a strongly reduced cooling demand by the use of high solar reflectivity exterior surfaces. Results are interpreted within the context of a steady-state energy flux model, to illuminate the importance of surface resistance properties (radiation and convective heat dissipation).

Keywords: Total solar reflectivity; Reflective coating; Thermal emissivity; Building interior heat flux; Energy efficient buildings; Energy saving (search for similar items in EconPapers)
Date: 2011
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Citations: View citations in EconPapers (9)

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DOI: 10.1016/j.apenergy.2011.06.002

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