在各种操作条件下最小化电化学压缩机的面积特定阻力,使用不稳定的3D单通道模型
Myungkeun Gong1, Changhyun Jin1, Youngseung Na1
1Department of Mechanical and Information Engineering, University of Seoul, Seoul 02504, Republic of Korea.
Membranes
|June 27, 2023
概括
电化学压缩机 (EHC) 提供纯净的高压,没有移动部件. 优化温度,湿度和气体扩散层的多孔性是高效的EHC运行和快速膜水合的关键.
科学领域:
- 储能 储能 储能 储能 储能 储能
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 是一种有前途的无碳能源载体,但由于体积密度低,需要高压压缩来储存和运输.
- 机械压缩机有油污染的风险,使电化学压缩机 (EHC) 成为生产高纯度的首选替代品.
- 电压压缩机使用电化学反应来压缩没有机械元件的,提供了更清洁的压缩方法.
研究的目的:
- 研究操作条件对3D单通道电化学压缩机 (EHC) 性能的影响.
- 分析膜含水量,区域特异性电阻和温度,相对湿度和GDL孔隙性等操作参数之间的关系.
- 通过短暂分析,确定EHC中快速膜水合的最佳条件.
主要方法:
- 一个3D单通道电化学压缩机 (EHC) 模型被开发和模拟.
- 进行了数值分析,以评估温度,相对湿度和气体扩散层 (GDL) 孔隙性的影响.
- 使用过渡分析来确定膜水化有利的操作条件.
主要成果:
- 由于和蒸汽压力的增加,更高的工作温度会增加膜水含量.
- 将干供应到加湿膜中会降低水蒸气压力,增加膜的特定区域阻力.
- 低GDL孔隙性增加粘性阻力,阻碍了湿化气向膜供应.
结论:
- 操作温度,相对湿度和GDL多孔性显著影响EHC性能和膜水合.
- 了解这些参数对于优化EHC效率和确保高纯度生产至关重要.
- 确定了有利的操作条件,以实现快速的膜水合,提高EHC的运行稳定性.
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