jismart2023020: A Contrast Study of Surface Color on Thermal Performance of Building

Abstract

The choice of color and reflectivity of building envelope materials has far-reaching consequences. Light-colored materials typically absorb less solar energy, which reduces the heat-absorbing effect of the walls. This helps keep wall temperatures within a controlled range, mitigating indoor temperature fluctuations and improving building comfort and energy efficiency. In order to clarify the relationship between color reflectance and building heat gain, we tested the reflectance of 36 standard colors at 380-780 nm and 780-2526 nm, as well as the HSB values of the samples, in a 72-hour solar radiation exposure experiment. Based on the measured surface temperature data of the specimen, the study of the relationship between reflectance, color brightness, hue, and surface temperature was carried out Correct selection and optimization of color reflectance and wall temperature as key factors will help to achieve more sustainable and energy-efficient building designs.