Operation of a bench-scale TiFe-based alloy tank under mild conditions for low-cost stationary hydrogen storage

被引:58
作者
Endo, Naruki [1 ]
Suzuki, Satoshi [1 ]
Goshome, Kiyotaka [1 ]
Maeda, Tetsuhiko [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Renewable Energy Res Ctr, 2-2-9 Machiikedai, Koriyama, Fukushima 9630298, Japan
关键词
Stationary hydrogen storage; TiFe-based alloy; Metal hydride; Hydrogen energy system; METAL HYDRIDE; ABSORPTION;
D O I
10.1016/j.ijhydene.2016.11.088
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
Activation processes of 55 kg TiFe-based alloy, filled in a conventional bench-scale tank (TiFe-based tank) under 1.0 MPa Gauge and at 80 degrees C, and its hydrogen absorption and desorption properties were studied. Following six ab/desorption cycles, the activation process was completed after the seventh absorption process. A long operating time (284 h) was necessary to complete the activation treatment. However, the operating time could be shortened by optimizing each activation process. At a constant hydrogen flow rate of 20 Nlfmin, the TiFe-based tank absorbed and desorbed >8 Nm(3) hydrogen at inlet brine temperatures of 60 degrees C and 70 degrees C, respectively. Heat exchange between the alloy bed and the brine circulation during desorption processes was about two times higher than during the absorption processes. Compared with 70 kg LaNi5 filled in the same tank (LaNi5 tank), the heat exchange was higher. This shows the TiFe-based tank would be more suitable for high hydrogen flow operations than the LaNi5 tank. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5246 / 5251
页数:6
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