Thermal efficiency evaluation of HI synthesis/concentration procedures in the thermochemical water splitting IS process

被引：80

作者：

Kasahara, S ^{[1
]}

Kubo, SJ ^{[1
]}

Onuki, K ^{[1
]}

Nomura, M ^{[1
]}

机构：

[1] Japan Atom Energy Res Inst, Dept Adv Nucl Heat Technol, Oarai, Ibaraki 3111394, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2004年 / 29卷 / 06期

关键词：

hydrogen production; water splitting; IS process; thermal efficiency; sensitivity analysis;

D O I：

10.1016/j.ijhydene.2003.08.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Effects of operation parameters of HI synthesis and concentration procedures on thermal efficiency in the thermochemical hydrogen production IS process were investigated based on heat/mass balance. Concentration of HI was carried out by an electro-electrodialysis (EED) cell. Transport number of proton, electroosmosis coefficient and ratio of the flow rates at the inlets of the EED cell were considered as parameters of the EED cell in different over potential and temperature difference at the heat exchangers. The parameters of the EED cell had little effect on the thermal efficiency at optimized over potential and temperature difference. The relation between these parameters and thermal efficiency was dependent on over potential or temperature difference. These parameters should be optimized by a heat/mass evaluation. Composition of the solution produced at the HI synthesis procedure influenced thermal efficiency significantly. High thermal efficiency was expected at low I-2 concentration and high HI concentration. (C) 2003 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：579 / 587

页数：9

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