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Optimal design on fin-metal foam hybrid structure for melting and solidification phase change storage: An experimental and numerical study

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  • Huang, Xinyu
  • Du, Zhao
  • Li, Yuanji
  • Li, Ze
  • Yang, Xiaohu
  • Li, Ming-Jia

Abstract

A fin-metal foam composite structure is employed in the phase change energy storage coupled Organic Rankine Cycle system to enhance thermal performance. The 3-D numerical model is validated through an experimental system to analyze the impact of metal foam parameters and fluctuating heat source parameters (amplitude and half-period) on the system's storage-release process during heat source fluctuation. According to the Taguchi method, metal foam porosity significantly influences the total storage-release time. An increase in porosity leads to a continuous increase in the total storage-release time, while an increase in PPI and a decrease in heat source amplitude initially increase and then decrease the total storage-release time. Under constant metal foam PPI (10) and porosity (0.97), Case T (half period = 60 and amplitude = 1.0) demonstrates a 2.04 % increase in average heat transfer rate and a 1.78 % reduction in total storage-release time compared to Case 0 (constant heat source). The average heat release rate sees a 4.23 % increase, while total heat storage and heat release rise by 0.96 % and 1.87 %. The research has specific technical significance for the photothermal application of phase change energy storage technology to the variability and unpredictability of solar energy.

Suggested Citation

  • Huang, Xinyu & Du, Zhao & Li, Yuanji & Li, Ze & Yang, Xiaohu & Li, Ming-Jia, 2024. "Optimal design on fin-metal foam hybrid structure for melting and solidification phase change storage: An experimental and numerical study," Energy, Elsevier, vol. 302(C).
    • Handle: RePEc:eee:energy:v:302:y:2024:i:c:s036054422401586x
    DOI: 10.1016/j.energy.2024.131813
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