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Thermal performance evaluation and optimal design of building roof with outer-layer shape-stabilized PCM

Author

Listed:
  • Yu, Jinghua
  • Yang, Qingchen
  • Ye, Hong
  • Luo, Yongqiang
  • Huang, Junchao
  • Xu, Xinhua
  • Gang, Wenjie
  • Wang, Jinbo

Abstract

Roof with outer-layer shape-stabilized phase change material (RSPCM) is a building construction that incorporates shape-stabilized phase change material (PCM) into the out layer of the roof. The decrement factor of the roof and the peak temperature of the inner surface can be greatly reduced by using the PCM in summer. CFD numerical simulation is used to investigate the thermal performance of RSPCM. The effects of the phase transition temperature, layer thickness and phase transition temperature radius of PCM are studied numerically. Results show that the suggested PCM thickness is 30 mm and the temperature radius should be as small as possible. The optimum phase transition temperatures are 31–33 °C, 34–36 °C, 36–38 °C, 34–36 °C, and 29–31 °C respectively in severe cold region, cold region, hot summer and cold winter region, hot summer and warm winter region and mild region. The decrement factors at the corresponding optimum phase transition temperature are about 0.030, which are lower than that of the roof without PCM by over 85%. The peak temperatures of the inner roof surface are all decreased by over 3.7 °C. These results can be used as a guideline for optimum design to improve the dynamic thermal performance of roof structure in summer.

Suggested Citation

  • Yu, Jinghua & Yang, Qingchen & Ye, Hong & Luo, Yongqiang & Huang, Junchao & Xu, Xinhua & Gang, Wenjie & Wang, Jinbo, 2020. "Thermal performance evaluation and optimal design of building roof with outer-layer shape-stabilized PCM," Renewable Energy, Elsevier, vol. 145(C), pages 2538-2549.
    • Handle: RePEc:eee:renene:v:145:y:2020:i:c:p:2538-2549
    DOI: 10.1016/j.renene.2019.08.026
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    1. Skiba, Marta & Mrówczyńska, Maria & Sztubecka, Małgorzata & Bazan-Krzywoszańska, Anna & Kazak, Jan K. & Leśniak, Agnieszka & Janowiec, Filip, 2021. "Probability estimation of the city’s energy efficiency improvement as a result of using the phase change materials in heating networks," Energy, Elsevier, vol. 228(C).
    2. Jiang, Lina & Gao, Yafeng & Zhuang, Chaoqun & Feng, Chi & Zhang, Xiaotong & Guan, Jingxuan, 2024. "Experiment verification and simulation optimization of phase change material cool roof in summer -- A case study of Chongqing, China," Energy, Elsevier, vol. 293(C).
    3. Xu, Bin & Chen, Xing-ni & Fei, Yue & Gan, Wen-tao & Pei, Gang, 2023. "Optimizing the applicability of cool paint through phase change material according to the energy consumption characteristics in different regions," Renewable Energy, Elsevier, vol. 212(C), pages 953-971.
    4. Jinghua Yu & Kangxin Leng & Feifei Wang & Hong Ye & Yongqiang Luo, 2020. "Simulation Study on Dynamic Thermal Performance of a New Ventilated Roof with Form-Stable PCM in Southern China," Sustainability, MDPI, vol. 12(22), pages 1-21, November.
    5. Li, Weilin & Jing, Mingyi & Li, Rufei & Gao, Junxi & Zhu, Jiayin & Li, Ruixin, 2023. "Study of the optimal placement of phase change materials in existing buildings for cooling load reduction - Take the Central Plain of China as an example," Renewable Energy, Elsevier, vol. 209(C), pages 71-84.
    6. Yu, Cairui & Shen, Dongmei & He, Wei & Hu, Zhongting & Zhang, Sheng & Chu, Wenfeng, 2021. "Parametric analysis of the phase change material wall combining with micro-channel heat pipe and sky radiative cooling technology," Renewable Energy, Elsevier, vol. 178(C), pages 1057-1069.
    7. Xie, Xing & Xu, Bin & Chen, Xing-ni & Pei, Gang, 2021. "Turning points emerging in the effect of thermal conductivity of phase change materials on utilization rate of latent heat in buildings," Renewable Energy, Elsevier, vol. 179(C), pages 1522-1536.
    8. Hu, Yue & Guo, Rui & Heiselberg, Per Kvols, 2020. "Performance and control strategy development of a PCM enhanced ventilated window system by a combined experimental and numerical study," Renewable Energy, Elsevier, vol. 155(C), pages 134-152.
    9. Xamán, J. & Rodriguez-Ake, A. & Zavala-Guillén, I. & Hernández-Pérez, I. & Arce, J. & Sauceda, D., 2020. "Thermal performance analysis of a roof with a PCM-layer under Mexican weather conditions," Renewable Energy, Elsevier, vol. 149(C), pages 773-785.
    10. Singh, Aditya Kumar & Rathore, Pushpendra Kumar Singh & Sharma, R.K. & Gupta, Naveen Kumar & Kumar, Rajan, 2023. "Experimental evaluation of composite concrete incorporated with thermal energy storage material for improved thermal behavior of buildings," Energy, Elsevier, vol. 263(PA).
    11. Mohseni, Ehsan & Tang, Waiching, 2021. "Parametric analysis and optimisation of energy efficiency of a lightweight building integrated with different configurations and types of PCM," Renewable Energy, Elsevier, vol. 168(C), pages 865-877.
    12. Yan, Tian & Zhou, Xuan & Xu, Xinhua & Yu, Jinghua & Li, Xianting, 2022. "Parametric analysis on performances of the pipe-encapsulated PCM (PenPCM) wall system coupled with gravity heat-pipe and nocturnal radiant cooler," Renewable Energy, Elsevier, vol. 196(C), pages 161-180.
    13. Xu, Bin & Xie, Xing & Pei, Gang & Chen, Xing-ni, 2020. "New view point on the effect of thermal conductivity on phase change materials based on novel concepts of relative depth of activation and time rate of activation: The case study on a top floor room," Applied Energy, Elsevier, vol. 266(C).
    14. Drissi, Sarra & Ling, Tung-Chai & Mo, Kim Hung, 2020. "Thermal performance of a solar energy storage concrete panel incorporating phase change material aggregates developed for thermal regulation in buildings," Renewable Energy, Elsevier, vol. 160(C), pages 817-829.
    15. Kong, Xiangfei & Jiang, Lina & Yuan, Ye & Qiao, Xu, 2022. "Experimental study on the performance of an active novel vertical partition thermal storage wallboard based on composite phase change material with porous silica and microencapsulation," Energy, Elsevier, vol. 239(PE).
    16. Ding, Zhixiong & Wu, Wei & Leung, Michael, 2021. "Advanced/hybrid thermal energy storage technology: material, cycle, system and perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 145(C).

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