Experimental analysis of wall surface colour impacts on building thermal performance in winter conditions

Qingxia Liao, Qijin Qiao and Lei He

International Journal of Low-Carbon Technologies, 2025, vol. 20, 745-754

Abstract: The choice of colour and reflectivity of building envelope materials has far-reaching consequences. The choice of albedo helps to keep wall temperatures within a certain range, thereby mitigating indoor temperature fluctuations and improving building comfort. In order to clarify the relationship between colour reflectance and building heat gain, we tested the reflectance of 36 standard colours at 380–780 nm and 780–2526 nm as well as the HSB values of the samples in a 72-h solar radiation exposure experiment. Based on the measured surface temperature data of the samples, the relationship between reflectance, colour brightness, hue, and surface temperature was investigated.

Keywords: material colour; reflectivity; solar radiation; building energy efficiency (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:oup:ijlctc:v:20:y:2025:i::p:745-754.

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