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Numerical Analysis of New PCM Thermal Storage Systems

Author

Listed:
  • Giampietro Fabbri

    (Department of Industrial Engineering (DIN), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Matteo Greppi

    (Department of Electrical, Electronic and Information Engineering, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

  • Federico Amati

    (Department of Industrial Engineering (DIN), University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy)

Abstract

In this paper, a thermal storage system based on a phase change material is proposed and investigated. The system is composed of several tubes that cross a phase change material mass. A fluid flowing in the tubes charges and discharges the heat storage system. A mathematical model of the system has been developed, which provides the time and space distribution of velocity, temperature, and liquid phase-changing material concentration in a non-stationary regime. A hybrid solution method based on finite volumes and finite differences techniques has been employed for the model equations in the MATLAB environment. To the tubes, a rectangular cross section has been assigned. The performance of the system in terms of accumulated energy density and accumulated power density has been investigated by varying some geometric parameters. The considered geometric parameters influence the number of tubes per unit of system width, the tube hydraulic resistance, the amount of phase change material around each tube, the heat transfer surface of the tube, and the heat storage velocity. In the parametric analysis, peaks have been evidenced in the investigated performance parameters at different instants after the beginning of the heat storage.

Suggested Citation

  • Giampietro Fabbri & Matteo Greppi & Federico Amati, 2024. "Numerical Analysis of New PCM Thermal Storage Systems," Energies, MDPI, vol. 17(7), pages 1-12, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:7:p:1772-:d:1371729
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    References listed on IDEAS

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    3. Itamar A. Harris Bernal & Arthur M. James Rivas & María De Los A. Ortega Del Rosario & M. Ziad Saghir, 2022. "A Redesign Methodology to Improve the Performance of a Thermal Energy Storage with Phase Change Materials: A Numerical Approach," Energies, MDPI, vol. 15(3), pages 1-23, January.
    4. Wang, Weilong & Yang, Xiaoxi & Fang, Yutang & Ding, Jing & Yan, Jinyue, 2009. "Enhanced thermal conductivity and thermal performance of form-stable composite phase change materials by using [beta]-Aluminum nitride," Applied Energy, Elsevier, vol. 86(7-8), pages 1196-1200, July.
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