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

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  • Qingxia Liao
  • Qijin Qiao
  • Lei He

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.

Suggested Citation

  • Qingxia Liao & Qijin Qiao & Lei He, 2025. "Experimental analysis of wall surface colour impacts on building thermal performance in winter conditions," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 20, pages 745-754.
    • Handle: RePEc:oup:ijlctc:v:20:y:2025:i::p:745-754.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaf017
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