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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical investigation of the thermophysical characteristics of the mid-and-low temperature solar receiver/reactor for hydrogen production
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Numerical investigation of the thermophysical characteristics of the mid-and-low temperature solar receiver/reactor for hydrogen production

机译：产氢中低温太阳能接收器/反应器热物理特性的数值研究

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摘要

With the considerations of the complex kinetic mechanisms of the methanol steam reforming using Cu/ ZnO/Al_2O_3 catalyst, in this paper a multiphysics coupling model that integrates the mass, momentum and energy conservation governing equations is proposed to investigate the thermophysical performances of the mid-and-low temperature solar receiver/reactor for hydrogen production. The factors influencing the hydrogen production and temperature distributions of the catalyst bed, including the diameter of the receiver/reactor, the non-uniform distribution of the solar flux and the porosity of the catalyst bed, are numerically studied. The temperature distributions, mole fractions of the components and reaction rates are obtained. The influence rules of the diameter of the receiver/reactor tube on the performances of the receiver/reactor are revealed. The non-uniform distribution of the solar flux has a significant influence on the cross-sectional temperature difference of the receiver/reactor tube, the catalyst bed and the temperature rise of the catalyst bed, while has a slight impact on the methanol conversion and the collector efficiency. The effect mechanisms of the porosity on the performances of the receiver/reactor are revealed. The research findings provide a fundamental reference for the development of the mid-and-low temperature solar receiver/reactor.
机译：考虑到使用Cu / ZnO / Al_2O_3催化剂进行甲醇蒸汽重整的复杂动力学机理，本文提出了一个综合了质量，动量和能量守恒控制方程的多物理场耦合模型，以研究中子的热物理性能。以及用于制氢的低温太阳能接收器/反应器。数值研究了影响制氢和催化剂床温度分布的因素，包括接收器/反应器的直径，太阳通量的不均匀分布和催化剂床的孔隙率。得到温度分布，组分的摩尔分数和反应速率。揭示了接收器/反应器管的直径对接收器/反应器性能的影响规律。太阳通量的不均匀分布对接收器/反应器管的横截面温度差，催化剂床层和催化剂床层的温度升高有显着影响，而对甲醇转化率和甲醇的转化率则有轻微的影响。集热效率。揭示了孔隙度对接收器/反应器性能的影响机理。研究成果为中低温太阳能接收器/反应器的开发提供了基础参考。

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  • 来源
  • 作者

    Qibin Liu; Yanjuan Wang; Jing Lei; Hongguang Jin;

  • 作者单位

    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China,University of Chinese Academy of Sciences, Beijing 100190, China;

    School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing 102206, China,Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China,University of Chinese Academy of Sciences, Beijing 100190, China;

    School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing 102206, China;

    Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China,University of Chinese Academy of Sciences, Beijing 100190, 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

    Solar hydrogen production; Solar receiver/reactor; Methanol steam reforming; Mathematical model;

    机译：太阳能制氢;太阳能接收器/反应器;甲醇蒸汽重整;数学模型;

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