Study on absorption/desorption characteristics of a metal hydride tank for boil-off gas from liquid hydrogen

Akihiro Nakano; Tetsuhiko Maeda; Hiroshi Ito; Masao Masuda; Yoshiaki Kawakami; Manabu Tange; Toru Takahashi; Keiichi Nishida

doi:10.1016/j.ijhydene.2011.12.021

Study on absorption/desorption characteristics of a metal hydride tank for boil-off gas from liquid hydrogen

Akihiro Nakano, Tetsuhiko Maeda, Hiroshi Ito, Masao Masuda, Yoshiaki Kawakami, Manabu Tange, Toru Takahashi, Keiichi Nishida

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We have been performing research on the Totalized Hydrogen Energy Utilization System (THEUS) which has applications to commercial buildings and a planned added function of supplying energy to stations for hydrogen and electric vehicles. In that case we will utilize liquid hydrogen transported from a hydrogen station and all Boil-Off Gas (BOG) will be recovered in THEUS's metal hydride tanks. It is known that BOG is chiefly composed of para-hydrogen, which has different thermo-physical properties from normal hydrogen. It has been reported that some metal hydride alloys work as a catalyst to accelerate the para-ortho conversion and the conversion proceeds relatively fast in the case of La-Ni ₅. The conversion is considered to be an endothermic reaction. A misch metal (Mm)-Ni ₅ metal hydride alloy, which contained La and Ni, was used in our THEUS metal hydride tank. To examine the effect of the para-ortho conversion on the THEUS operation, we investigated the absorption/desorption characteristics of the metal hydride tank with BOG. We confirmed that the effect of the heat of conversion was very small and BOG could be treated as normal hydrogen for practical application.

Original language	English
Pages (from-to)	5056-5062
Number of pages	7
Journal	International Journal of Hydrogen Energy
Volume	37
Issue number	6
DOIs	https://doi.org/10.1016/j.ijhydene.2011.12.021
Publication status	Published - 2012 Mar

Keywords

Hydrogen storage
Liquid hydrogen
Metal hydride
Normal hydrogen
Para-hydrogen

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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10.1016/j.ijhydene.2011.12.021

Cite this

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title = "Study on absorption/desorption characteristics of a metal hydride tank for boil-off gas from liquid hydrogen",

abstract = "We have been performing research on the Totalized Hydrogen Energy Utilization System (THEUS) which has applications to commercial buildings and a planned added function of supplying energy to stations for hydrogen and electric vehicles. In that case we will utilize liquid hydrogen transported from a hydrogen station and all Boil-Off Gas (BOG) will be recovered in THEUS's metal hydride tanks. It is known that BOG is chiefly composed of para-hydrogen, which has different thermo-physical properties from normal hydrogen. It has been reported that some metal hydride alloys work as a catalyst to accelerate the para-ortho conversion and the conversion proceeds relatively fast in the case of La-Ni 5. The conversion is considered to be an endothermic reaction. A misch metal (Mm)-Ni 5 metal hydride alloy, which contained La and Ni, was used in our THEUS metal hydride tank. To examine the effect of the para-ortho conversion on the THEUS operation, we investigated the absorption/desorption characteristics of the metal hydride tank with BOG. We confirmed that the effect of the heat of conversion was very small and BOG could be treated as normal hydrogen for practical application.",

keywords = "Hydrogen storage, Liquid hydrogen, Metal hydride, Normal hydrogen, Para-hydrogen",

author = "Akihiro Nakano and Tetsuhiko Maeda and Hiroshi Ito and Masao Masuda and Yoshiaki Kawakami and Manabu Tange and Toru Takahashi and Keiichi Nishida",

note = "Funding Information: These results were obtained per support from the New Energy and Industrial Technology Development Organization (NEDO) based on a grant from METI . A part of this study was also supported from Japan-U.S. joint research of METI under the program of U.S.-Japan clean energy action plan. And we wish to thank Mrs. Y. Nogiwa, Mrs. S. Takagi and Mrs. H. Tsujimoto for very helpful assistance. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

year = "2012",

month = mar,

doi = "10.1016/j.ijhydene.2011.12.021",

language = "English",

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AU - Nakano, Akihiro

AU - Maeda, Tetsuhiko

AU - Ito, Hiroshi

AU - Masuda, Masao

AU - Kawakami, Yoshiaki

AU - Tange, Manabu

AU - Takahashi, Toru

AU - Nishida, Keiichi

N1 - Funding Information: These results were obtained per support from the New Energy and Industrial Technology Development Organization (NEDO) based on a grant from METI . A part of this study was also supported from Japan-U.S. joint research of METI under the program of U.S.-Japan clean energy action plan. And we wish to thank Mrs. Y. Nogiwa, Mrs. S. Takagi and Mrs. H. Tsujimoto for very helpful assistance. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2012/3

Y1 - 2012/3

N2 - We have been performing research on the Totalized Hydrogen Energy Utilization System (THEUS) which has applications to commercial buildings and a planned added function of supplying energy to stations for hydrogen and electric vehicles. In that case we will utilize liquid hydrogen transported from a hydrogen station and all Boil-Off Gas (BOG) will be recovered in THEUS's metal hydride tanks. It is known that BOG is chiefly composed of para-hydrogen, which has different thermo-physical properties from normal hydrogen. It has been reported that some metal hydride alloys work as a catalyst to accelerate the para-ortho conversion and the conversion proceeds relatively fast in the case of La-Ni 5. The conversion is considered to be an endothermic reaction. A misch metal (Mm)-Ni 5 metal hydride alloy, which contained La and Ni, was used in our THEUS metal hydride tank. To examine the effect of the para-ortho conversion on the THEUS operation, we investigated the absorption/desorption characteristics of the metal hydride tank with BOG. We confirmed that the effect of the heat of conversion was very small and BOG could be treated as normal hydrogen for practical application.

AB - We have been performing research on the Totalized Hydrogen Energy Utilization System (THEUS) which has applications to commercial buildings and a planned added function of supplying energy to stations for hydrogen and electric vehicles. In that case we will utilize liquid hydrogen transported from a hydrogen station and all Boil-Off Gas (BOG) will be recovered in THEUS's metal hydride tanks. It is known that BOG is chiefly composed of para-hydrogen, which has different thermo-physical properties from normal hydrogen. It has been reported that some metal hydride alloys work as a catalyst to accelerate the para-ortho conversion and the conversion proceeds relatively fast in the case of La-Ni 5. The conversion is considered to be an endothermic reaction. A misch metal (Mm)-Ni 5 metal hydride alloy, which contained La and Ni, was used in our THEUS metal hydride tank. To examine the effect of the para-ortho conversion on the THEUS operation, we investigated the absorption/desorption characteristics of the metal hydride tank with BOG. We confirmed that the effect of the heat of conversion was very small and BOG could be treated as normal hydrogen for practical application.

KW - Hydrogen storage

KW - Liquid hydrogen

KW - Metal hydride

KW - Normal hydrogen

KW - Para-hydrogen

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Study on absorption/desorption characteristics of a metal hydride tank for boil-off gas from liquid hydrogen

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Keywords

ASJC Scopus subject areas

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