Optimizing the applicability of cool paint through phase change material according to the energy consumption characteristics in different regions

Bin Xu, Xing-ni Chen, Yue Fei, Wen-tao Gan and Gang Pei

Renewable Energy, 2023, vol. 212, issue C, 953-971

Abstract: Cool paint (CP) is effective to decrease cooling energy consumption, but it brings heating penalty. Phase change material (PCM) can alleviate the heating penalty caused by CP. In this work, eight cities with different climates are analyzed. According to cooling/heating energy consumption, these cities are divided into different categories. Compared with CP roof, adding PCM on the CP has little effect for further reducing the cooling energy use or peak load. CP increases heating energy consumption, but does not aggravate the peak heating load range. The higher the proportion of heating energy consumption increased by CP, the more PCM amount needs to compensate for the heating penalty. When increasing PCM thickness, the peak heating load decreases first and then unchanged. For the total energy consumption, CP + PCM is always superior to CP. Applying CP alone is only preferable in cities whose heating energy consumption ratio does not exceed 0.66. In other cities, applying 10–20 mm PCM on the basis of CP can realize positive energy saving benefits, which broadens the applicable climate for CP. This work provides valuable guides for the application of CP alone, and the optimization effect of PCM on CP under different climates.

Keywords: Cool paint phase change material minimum thickness energy consumption peak load (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:212:y:2023:i:c:p:953-971

DOI: 10.1016/j.renene.2023.05.107

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