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The interphase heat transfer of supercritical water-particles: Analysis and modeling based on assumption of thermal energy level and its transition

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  • Li, Xiaoyu
  • Peng, Zhiyong
  • Wang, Huibo
  • Li, Yi
  • Jin, Hui

Abstract

The interphase heat transfer between fluid and particles in the reactor is an important parameter for determining the reaction state. The process of the fluid transferring thermal energy to the particles to induce reactions is similar to the excitation process of atoms. It leads to the assumption of particle thermal energy level. The thermal energy level is quantified by analyzing the interphase thermal energy transfer between fluid and particles. Furthermore, based on the non-linear variation of thermal energy content in the supercritical water (SCW), the transition multiple of thermal energy level is proposed and quantified. It reveals that the transition multiple is a function of Pr∗, which represents the state of SCW thermal energy content. The transition multiple model is established based on Pr∗. The three influence factors of thermal energy level of particle clusters in SCW are decoupled. The thermal energy transfer coefficient is proposed and analyzed. Finally, a prediction model for the thermal energy level of particle clusters in SCW is established based on the results.

Suggested Citation

  • Li, Xiaoyu & Peng, Zhiyong & Wang, Huibo & Li, Yi & Jin, Hui, 2025. "The interphase heat transfer of supercritical water-particles: Analysis and modeling based on assumption of thermal energy level and its transition," Energy, Elsevier, vol. 318(C).
    • Handle: RePEc:eee:energy:v:318:y:2025:i:c:s0360544225005511
    DOI: 10.1016/j.energy.2025.134909
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    References listed on IDEAS

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    1. Huang, Chengwei & Xu, Jialing & Xu, Shuai & Shan, Murong & Liu, Shanke & Yu, Lijun, 2024. "Optimizing H2 production from biomass: A machine learning-enhanced model of supercritical water gasification dynamics," Energy, Elsevier, vol. 312(C).
    2. Wang, Cui & Jin, Hui, 2024. "Thermodynamic analysis of poly-generation system for gas-biochar-heat-electricity based on supercritical water gasification of biomass waste," Energy, Elsevier, vol. 311(C).
    3. Wu, Zhenqun & Ou, Guobiao & Ren, Yifei & Jin, Hui & Guo, Liejin, 2020. "Particle-resolved numerical study of the forced convection heat transfer characteristics of an endothermic-biomass particle placed in supercritical water crossflow," Renewable Energy, Elsevier, vol. 158(C), pages 271-279.
    4. Wu, Hongtu & Zhang, Bowei & Wang, Weizuo & Jin, Hui, 2024. "Optimizing phase equilibrium predictions for the liquefaction of supercritical water gasification products: Enhancing energy storage solutions through advanced thermodynamic modeling," Energy, Elsevier, vol. 308(C).
    5. Chen, Jingwei & Huang, Yizhen & Liu, Yang & Jiaqiang, E., 2024. "System development and thermodynamic performance analysis of a system integrating supercritical water gasification of black liquor with direct-reduced iron process," Energy, Elsevier, vol. 295(C).
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