Investigation of Micro-scale Structural Changes in the Packed Bed of Hydrogen Storage Alloys and the Deformation of the Vessel by On-site Visualization

2013 Fiscal Year Final Research Report

• Project/Area Number: 24760619
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Properties in chemical engineering process/Transfer operation/Unit operation
• Research Institution: Tohoku University
• Principal Investigator: SAITO YASUHIRO 東北大学, 工学(系)研究科(研究院), 助教 (50621033)
• Research Collaborator: KAWAKAMI Yoshiaki 高砂熱学工業株式会社 ; OKUMURA Masahiko 東北大学, 大学院工学研究科, 大学院生
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: 水素吸蔵合金 / マイクロX線CT / Mm-Ni / Ti-Fe / 微粉化

Research Abstract

To investigate the safety of the storage tank of hydrogen storage alloys, the strain on the vessel wall and micro-scale structural change in the vessel along with the hydrogen absorption-desorption process were evaluated. The results of strain measurement indicated that the stress which caused at the bottom of the vessel increased with repeated hydrogen absorption-desorption process. The measurement of local packing ratios showed that alloy particles were concentrated at the lower parts of the packed bed with the absorption-desorption process. The observation results using an X-ray computed tomography showed that the pulverization property of the Ti-Fe alloys, which did not contain any rare earth elements, was different from that of the Mm-Ni. The image processing program for estimating the particle diameter distribution was developed and applied to Mm-Ni alloys, and indicated that the particle diameters in the packed bed decreased by hydrogen absorption.

Research Products

• [Journal Article] Pulverization Mechanism of Hydrogen Storage Alloys on Microscale Packing Structure (2012)
  • Author(s): Okumura, M., A. Ikado, Y. Saito, H. Aoki, T. Miura and Y. Kawakami
  • Journal Title: Int. J. Hydrogen Energy Volume: 37 Pages: 10715–10723
  • DOI: 10.1016/j.ijhydene.2012.04.061
  • Peer Reviewed
• [Journal Article] Investigation of Wall Stress Development and Packing Ratio Distribution in the Metal Hydride Reactor (2012)
  • Author(s): Okumura, M., K. Terui, A. Ikado, Y. Saito, M. Shoji, Y. Matsushita, H. Aoki, T. Miura and Y. Kawakami
  • Journal Title: Int. J. Hydrogen Energy Volume: 37 Pages: 6686–6693
  • DOI: 10.1016/j.ijhydene.2012.01.097
  • Peer Reviewed
• [Presentation] 水素吸蔵合金の利用を目指した充填層解析 (2014)
  • Author(s): 齋藤泰洋,奥村真彦,松下洋介,青木秀之
  • Organizer: 自動車技術会伝熱技術部門委員会企画シンポジウム『省エネを支える伝熱技術』
  • Place of Presentation: 東京,日本
  • Year and Date: 2014-02-14
• [Presentation] Three-dimensional Observation of Hydro- gen Storage Alloy in Packed Bed and Its Property (2013)
  • Author(s): Okumura, M., Y. Saito, Y. Matsushita, H. Aoki, Y. Kawakami and K. Taki
  • Organizer: Int. Symp. EcoTopia Sci. 2013
  • Place of Presentation: Nagoya, Japan
  • Year and Date: 20131213-15
• [Presentation] 水素吸蔵合金の微粉化現象に関するプロセス解析 (2013)
  • Author(s): 齋藤泰洋
  • Organizer: 第2回水素貯蔵材料・水素エネルギーシステムに関する研究会
  • Place of Presentation: 小国,日本
  • Year and Date: 2013-05-17
• [Presentation] 水素吸蔵合金を用いた水素貯蔵容器内の充填状態変化と応力発現の検討 (2013)
  • Author(s): 川上理亮,奥村真彦,齋藤泰洋,青木秀之
  • Organizer: 空気調和・衛生工学会東北支部第2回学術・技術報告会
  • Place of Presentation: 仙台,日本
  • Year and Date: 2013-03-12
• [Presentation] An Investigation of the Stress Distribution Changes on the Thick Wall Vessel of Hydrogen Storage Alloys (2012)
  • Author(s): Okumura, M., A. Ikado, Y. Saito, H. Aoki and Y. Kawakami
  • Organizer: Int. Symp. Metal-Hydrogen Syst. 2012
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 20121021-26
• [Presentation] Multi-scale Investigation of Segregation of Hydrogen Storage Alloys Bed (2012)
  • Author(s): Okumura, M., A. Ikado, Y. Saito, H. Aoki and Y. Kawakami
  • Organizer: Int. Conf. Clean Energy 2012
  • Place of Presentation: Quebec, Canada
  • Year and Date: 20120910-12
• [Presentation] 水素吸蔵合金におけるプロセス解析 (2012)
  • Author(s): 齋藤泰洋
  • Organizer: 水素貯蔵材料・水素エネルギーシステムに関する研究会
  • Place of Presentation: つくば,日本
  • Year and Date: 2012-07-26
• [Remarks]
  • URL: http://www.che.tohoku.ac.jp/~tranpo/
• [Remarks] International Symposium on EcoTopia Science 2013, Outstanding Presentation Award, 12月15日(2013) 受賞歴
• [Remarks] 空気調和・衛生工学会東北支部 第2回学術・技術報告会,優秀発表奨励賞, 5月22日(2013) 受賞歴