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Optimizing Gas-Pcm Energy Storage: Advanced Strategies for Enhancing Latent Heat Storage Efficiency Under Fluctuating Flows

SSRN, ISSN: 1556-5068
2024
  • 1
    Citations
  • 277
    Usage
  • 0
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    1
    • Citation Indexes
      1
  • Usage
    277
    • Abstract Views
      263
    • Downloads
      14

Article Description

In response to the urgent need for improving thermal energy storage efficiency within waste heat recovery systems utilizing fluctuating heat sources such as exhaust gas and hot water, this study presents an analytical and experimental investigation into the charging performance of Gas-PCM latent heat energy storage units under fluctuating flow conditions. Through the integration of the enthalpy-porous medium model, we explore the phase change material (PCM) melting dynamics within energy storage configurations, addressing a variety of heat transfer fluid inlet conditions. The employment of experimental validation in tandem with simulation endeavors underscores the robustness of our proposed model and methodological approach.Our findings illuminate the efficacy of flat and corrugated heat storage designs in accommodating heat sources characterized by significant temperature and flow fluctuations. Results indicate that flat heat storage units exhibit superior performance under conditions of noticeable temperature variations and minimal flow alterations, with a predilection for corrugated configurations in scenarios dominated by pronounced flow fluctuations. Specifically, corrugated units demonstrated a potential reduction in PCM complete melting time by up to 11.7% and an enhancement in heat storage capacity by as much as 11.0% under fluctuating flow conditions. Such insights underscore the critical role of flow rate dynamics over temperature variations in enhancing heat transfer efficiency and storage capabilities of corrugated heat storage units, thereby facilitating the optimization of thermal energy storage solutions within renewable energy systems and advancing the frontier of energy utilization efficiency.

Bibliographic Details

Yuqi Huang; Jiayuan Luo; Caifeng Wei; Jianmeng Cen; Yiji Lu

Elsevier BV

Multidisciplinary; phase change heat storage; natural convection; heat transfer enhancement; Numerical simulation; fluctuating flow conditions

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