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首页> 外文期刊>International Journal of Heat and Mass Transfer >Three-dimensional numerical investigation on melting performance of phase change material composited with copper foam in local thermal non-equilibrium containing an internal heater
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Three-dimensional numerical investigation on melting performance of phase change material composited with copper foam in local thermal non-equilibrium containing an internal heater

机译：铜泡沫在局部热非平衡中铜泡沫复合材料熔化性能的三维数值研究

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摘要

This work aims to numerically study the 3D melting heat transfer of latent heat thermal energy storage (LHTES) systems with phase change material (PCM) embedded in copper foam inside an internal heated cubic cavity. The enthalpy-porosity method to model the phase change process is employed and the Darcy-Forchheimer law and local thermal non-equilibrium (LTNE) model are assumed for the metal foam. The numerical code of proposed model shows good agreement for copper foam composited PCM melting with carefully designed experiments. Special attentions are given to detect the effects of Rayleigh number (Ra), porosity (e), Darcy number (Da) and heater size on evolvement of solid-liquid interface, temperature stratification and full melting. The results show that increasing Ra enhances convective heat transfer in the upper part of the porous cavity: though the completely melting time remains almost unchanged. For a fixed porosity, decrease of Da reduces the melting rate in the medium melting stage, and the temperature distribution of low Da is dominated by the heat conduction in porous media at the later stage, but Da shows a negligible effect on the complete melting time. For a fixed Da, increase of porosity decelerates the complete melting time. Apart from that, the heater size also plays an important role in the melting performance of composited PCM.
机译：这项工作旨在在数值上研究潜热热能储存（LHTES）系统的3D熔热传热，其具有嵌入在内部加热的立方腔内的铜泡沫中的相变材料（PCM）。采用焓 - 孔隙率法，采用相变工艺，并假设金属泡沫的达西 - 前摩尔法和局部热非平衡（LTNE）模型。所提出的模型的数值代码显示了铜泡沫的良好一致性，具有精心设计的实验。特别注意检测瑞利数（RA），孔隙度（e），达西数（DA）和加热器大小对固体液体界面的演变，温度分层和全熔化的影响。结果表明，增加的RA增强了多孔腔的上部的对流传热：虽然完全熔化的时间几乎保持不变。对于固定孔隙率，DA的降低降低了中熔阶段中的熔化速率，低DA的温度分布在后期的多孔介质中的热传导主导，但DA显示了对完全熔化的效果可忽略的影响。对于固定的DA，孔隙度的增加减速了完全熔化的时间。除此之外，加热器大小也在复合PCM的熔化性能中起着重要作用。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2021年第5期|121021.1-121021.15|共15页
  • 作者

    Xiaochun Zhang; Guokai Su; Junjiang Lin; Aihua Liu; Changhong Wang; Yijie Zhuang;

  • 作者单位

    Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China;

    Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China;

    Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China;

    Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China;

    School of Materials and Energy Guangdong University of Technology Guangzhou 510006 China;

    Guangzhou Key Laboratory of Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and Engineering Institute of Environmental Health and Pollution Control Guangdong University of Technology Guangzhou 510006 China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composited phase change material; Metal foam; Internal heater; Thermal non-equilibrium model; 3D melting performance;

    机译：构成相变材料;金属泡沫;内部加热器;热非平衡模型;3D融化性能;

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