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Modeling of Thermal Energy Storage Shell-and-Tube Heat Exchanger

机译：蓄热管壳式换热器的建模

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摘要

This paper reports on the development of a computationally efficient numerical simulation model for a shell-and-tube thermal energy storage system, where the heat transfer occurs between a fixed mass of phase-change material (PCM) in contact with a tube through which flows a high-temperature fluid. Simulations of the conjugate heat transfer and melting/solidification of the PCM for a range of heat exchanger designs, including single-tube control/baseline, single tube with longitudinal and circular fins, and multitube configurations, were undertaken and the numerical results were validated using experimental data. The underlying simplifications in the model were tested and verified against two- and three-dimensional simulations. During charging, before complete melting of the PCM, the PCM volume average temperature is predicted to be within 5℃ of the experimentally determined value for each heat exchanger design. During discharging there is a good trend-wise agreement between predicted and measured temperatures, with maximum deviations of about 10℃. Comparison of heat transferred during charging and discharging phases between the one-dimensional and refined two-dimensional predictions was in agreement to within 8.5%, indicating the usefulness of the one-dimensional model and the adopted effective conduction approach.
机译：本文报告了一种管壳式热能存储系统的高效计算数值模拟模型的开发，该模型的热传递发生在固定质量的相变材料（PCM）与流经管的接触之间高温流体。对包括单管控制/基线，具有纵向和圆形翅片的单管以及多管结构在内的一系列热交换器设计进行了PCM的共轭传热和熔融/凝固的仿真，并使用验证了数值结果实验数据。针对二维和三维模拟对模型中的基本简化进行了测试和验证。在充电过程中，在每次PCM完全熔化之前，预测PCM的体积平均温度在每个热交换器设计的实验确定值的5℃之内。在放电过程中，预测温度和测量温度之间存在良好的趋势一致性，最大偏差约为10℃。一维预测和精细二维预测在充放电阶段传递的热量比较在8.5％以内，表明一维模型的有效性和所采用的有效传导方法。

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  • 来源
    《Heat Transfer Engineering》 |2014年第4期|1-14|共14页
  • 作者

    ANDREW J. PARRY; PHILIP C. EAMES; FRANCIS B. AGYENIM;

  • 作者单位

    Modeling and Simulation Department, Schlumberger, Clamart, France;

    Electronic and Electrical Engineering, Loughborough University, Leicestershire, United Kingdom;

    Faculty of Engineering, University Park, Nottingham, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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