金属氢化物热压缩机吸放氢传热传质的对称性研究

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金属氢化物热压缩机吸放氢传热传质的对称性研究

更新时间：2025-07-09

- 金属氢化物热压缩机吸放氢传热传质的对称性研究
- Issue 9, Pages: 119-125(2013)
- 作者机构：
  
  1. 西北大学化工学院
  2. 西安交通大学化学工程与技术学院
  3. 西安西骏新材料有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG139.7;TH45
- Published：2013
- 稿件说明：
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[J]. 2013, (9): 119-125.
DOI：

[J]. 2013, (9): 119-125. DOI：

摘要

针对金属氢化物热压缩机(MHTC)在实际应用过程中存在的吸放氢非对称性限制

开展了MHTC传热传质对称性的研究和优化。根据局部热平衡模型

以2D圆环剖面为计算区域

对MHTC多管束反应器实施了模拟

并对模拟过程中的参数及结构进行了优化。优化结果表明:以4层管的多管束反应器为基准

改变吸放氢反应条件能改善反应过程的不对称性特征

即吸、放氢压力分别为2、0.05MPa

温度为293、393K

传热系数为1 000 W/(m2·K)时

吸氢反应分率由0.1上升到0.9;放氢反应分率由0.9降至0.1时

所用时间分别为350和360s

温度变化幅度分别为40和43K

显示出明显的对称性。在反应前20s内

放氢过程中平衡压力的变化剧烈

占平衡压力总变化量的50%以上

为反应过程中的高效反应阶段。

Abstract

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references

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