Operation of a bench-scale TiFe-based alloy tank under mild conditions for low-cost stationary hydrogen storage
Operation of a bench-scale TiFe-based alloy tank under mild conditions for low-cost stationary hydrogen storage
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DOI：
10.1016/j.ijhydene.2016.11.088
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发表时间：
2017-02-23
影响因子：
7.2
通讯作者：
Maeda, Tetsuhiko
中科院分区：
文献类型：
--
作者：
Endo, Naruki;Suzuki, Satoshi;Maeda, Tetsuhiko
研究了 55 kg TiFe 基合金在 1.0 MPa 压力和 80 ℃ 条件下填充在传统小型罐（TiFe 基罐）中的活化过程及其吸氢和解吸性能。经过六次吸收/解吸循环后，第七次吸收过程后完成活化过程。完成活化处理需要很长的操作时间（284小时）。然而，通过优化每个激活过程可以缩短操作时间。在 20 Nlfmin 的恒定氢气流量下，TiFe 基罐在入口盐水温度分别为 60 摄氏度和 70 摄氏度时吸收和解吸 >8 Nm(3) 氢气。解吸过程中合金床和盐水循环之间的热交换大约是吸收过程中的两倍。与同一罐内填充70公斤LaNi5（LaNi5罐）相比，热交换更高。这表明 TiFe 储罐比 LaNi5 储罐更适合高氢气流量操作。 (C) 2016 氢能源出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
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.