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Numerical Study on Melting Heat Transfer in Dendritic Heat Exchangers

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  • Xinmei Luo

    (School of Energy Science and Engineering, Central South University, Changsha 410083, China
    School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China)

  • Shengming Liao

    (School of Energy Science and Engineering, Central South University, Changsha 410083, China)

Abstract

The dendritic fin was introduced to improve the solid-liquid phase change in heat exchangers. A theoretical model of melting phase change in dendritic heat exchangers was developed and numerically simulated. The solid-liquid phase interface, liquid phase rate and dynamic temperature change in dendritic heat exchanger during melting process are investigated and compared with radial-fin heat exchanger. The results indicate that the dendritic fin is able to enhance the solid-liquid phase change in heat exchanger for latent thermal storage. The presence of dendritic fin leads to the formation of multiple independent PCM zones, so the heat can be quickly diffused from one point to across the surface along the metal fins, thereby making the PCM far away from heat sources melt earlier and faster. In addition, the dendritic structure makes the PCM temperature distribution more uniform over the entire zone inside heat exchangers due to high-efficient heat flow distribution of dendritic fins. As a result, the time required for the complete melting of the PCM in dendritic heat exchanger is shorter than that of the radial-fin heat exchanger.

Suggested Citation

  • Xinmei Luo & Shengming Liao, 2018. "Numerical Study on Melting Heat Transfer in Dendritic Heat Exchangers," Energies, MDPI, vol. 11(10), pages 1-11, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2504-:d:171148
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    References listed on IDEAS

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    Cited by:

    1. Jesus Fernando Hinojosa & Saul Fernando Moreno & Victor Manuel Maytorena, 2023. "Low-Temperature Applications of Phase Change Materials for Energy Storage: A Descriptive Review," Energies, MDPI, vol. 16(7), pages 1-39, March.
    2. Marzouk, S.A. & Abou Al-Sood, M.M. & M.S. El-Said, Emad & Younes, M.M. & K. El-Fakharany, Magda, 2023. "Evaluating the effects of bifurcation angle on the performance of a novel heat exchanger based on contractual theory," Renewable Energy, Elsevier, vol. 219(P1).
    3. Ewelina Radomska & Lukasz Mika & Karol Sztekler & Lukasz Lis, 2020. "The Impact of Heat Exchangers’ Constructions on the Melting and Solidification Time of Phase Change Materials," Energies, MDPI, vol. 13(18), pages 1-44, September.
    4. Wenwen Ye & Dourna Jamshideasli & Jay M. Khodadadi, 2023. "Improved Performance of Latent Heat Energy Storage Systems in Response to Utilization of High Thermal Conductivity Fins," Energies, MDPI, vol. 16(3), pages 1-83, January.

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