화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.82, 413-423, February, 2020
DOI10.1016/j.jiec.2019.11.005  Export Citation
Numerical analysis of phase change materials/wood.plastic composite roof module system for improving thermal performance
Seong Jin Chang, Seunghwan Wi, Hyun Mi Cho, Su-Gwang Jeong1, and Sumin Kim†
  • Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea
  • 1Department of Architectural Engineering, Pennsylvania State University, University Park, PA 16802, United States, Korea
E-mail:
Using phase change materials (PCMs) to store and release latent heat is one of the most efficient and reliable ways to reduce energy consumption. In this study, a PCM/wood.plastic composite (WPC) roof module system with PCM inserted into a hollow layer of WPC is proposed to reduce building roof surface temperature and improve building energy performance and indoor thermal comfort. A thermal performance evaluation showed that the roof surface temperature can be greatly reduced by increasing reflectivity. However, increasing reflectance can increase heating load and cause freezing-related problems in winter because surface temperature is greatly reduced. The application of the PCM/WPC roof module system reduced surface temperature by 7.37 °C in the summer. As the thickness of PCM increased, the surface temperature decreased; however, the variation was not constant. PCM with a phase change temperature of 30 °C was most effective in reducing surface temperature, while PCM with a phase change temperature of 20 °C was most effective in improving building energy performance and thermal comfort. This is because the PCM is applied to the outer face of the building. Therefore, the type and thickness of PCM should be selected considering reflectance, application purpose, and economic efficiency.
Keywords:Phase change materials;Roof module system;Surface temperature;Building energy consumption;Indoor thermal comfort
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