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Analysis on the Improvement of Thermal Performance of Phase Change Material Ba (OH) 2 ·8H 2 O

Author

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  • Xiaohui Lu

    (School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou 535011, China)

  • Xiaoxue Luo

    (School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou 535011, China)

  • Shibo Cao

    (School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou 535011, China)

  • Changzhen Zou

    (School of Mechanical and Marine Engineering, Beibu Gulf University, Qinzhou 535011, China)

Abstract

Benefitting from the characteristics of a high latent heat capacity and stable phase change behavior, phase change materials have widely received concerns in the field of thermodynamic management. Ba(OH) 2 ·8H 2 O is an ideal phase change material (PCM) in the mid-to-low temperature range, but its large-scale application is still limited by severe supercooling during the nucleation process. In this paper, the experimental analysis and comparison are performed via an Edisonian approach, where Ba(OH) 2 ·8H 2 O is adopted as an original substrate; BaCO 3 , CaCl 2 , NaCl, KH 2 PO 4 , and NaOH are selected as nucleating agents; and graphite is used as a heat-conducting agent. The results show that Ba(OH) 2 ·8H 2 O containing 1.2% BaCO 3 and 0.2% graphite powder has the best performance. Compared with pure Ba(OH) 2 ·8H 2 O, the supercooling degree is reduced to less than 1 °C, the phase change latent heat duration is extended, and the thermal conductivity is significantly improved. Therefore, this study not only provides a reference for the application of Ba(OH) 2 ·8H 2 O, but can also be used as a guidance for other material modifications.

Suggested Citation

  • Xiaohui Lu & Xiaoxue Luo & Shibo Cao & Changzhen Zou, 2021. "Analysis on the Improvement of Thermal Performance of Phase Change Material Ba (OH) 2 ·8H 2 O," Energies, MDPI, vol. 14(22), pages 1-10, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7761-:d:682800
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    References listed on IDEAS

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    1. Mohamed, Shamseldin A. & Al-Sulaiman, Fahad A. & Ibrahim, Nasiru I. & Zahir, Md. Hasan & Al-Ahmed, Amir & Saidur, R. & Yılbaş, B.S. & Sahin, A.Z., 2017. "A review on current status and challenges of inorganic phase change materials for thermal energy storage systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 1072-1089.
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    Cited by:

    1. Guojun Yu & Huihao Liu & Huijin Xu, 2023. "New Advancements in Heat and Mass Transfer: Fundamentals and Applications," Energies, MDPI, vol. 16(7), pages 1-4, March.

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