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Iron and steel production process (ISPP) emits massive high-temperature flue gas, resulting in vast energyEnergy consumption and waste. Waste heat recoveryWaste heat recovery (WHR) is better for improving energy efficiencyEnergy efficiency, and energyEnergy-saving and emission reduction effect. Phase change materials (PCM) play an important role in energyEnergy storage, conversion, saving and utilization. In this paper, the Al-Cu-Si alloy PCM is selected for WHR. The numerical calculation models and boundary conditions of WHR are established. The liquid phase, temperature and velocity field distributions during the melting and solidificationMelting and solidification are further researched and analyzed by ANSYS Fluent 2023 R1 software. The results reveal that the Al-Cu-Si alloy PCM possesses the shorter melting time of 353.6 s than the solidification time of 450.4 s, and great WHR effect. The thermal conduction and natural convection result in the different velocity and temperature field in different stages. Based on the simulation results, a laboratory WHR scheme is designed.

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Numerical Simulation of Melting and Solidification of Alloy Phase Change Materials for Waste Heat Recovery

  • 会议论文

  • 发表日期：

    2025年

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  • Hang Hu,
  • Lingzhi Yang,
  • Weizhen Chen,
  • Fang Yi

摘要

Iron and steel production process (ISPP) emits massive high-temperature flue gas, resulting in vast energyEnergy consumption and waste. Waste heat recoveryWaste heat recovery (WHR) is better for improving energy efficiencyEnergy efficiency, and energyEnergy-saving and emission reduction effect. Phase change materials (PCM) play an important role in energyEnergy storage, conversion, saving and utilization. In this paper, the Al-Cu-Si alloy PCM is selected for WHR. The numerical calculation models and boundary conditions of WHR are established. The liquid phase, temperature and velocity field distributions during the melting and solidificationMelting and solidification are further researched and analyzed by ANSYS Fluent 2023 R1 software. The results reveal that the Al-Cu-Si alloy PCM possesses the shorter melting time of 353.6 s than the solidification time of 450.4 s, and great WHR effect. The thermal conduction and natural convection result in the different velocity and temperature field in different stages. Based on the simulation results, a laboratory WHR scheme is designed.