Measurements of water distribution in through-plane direction of PEFC by using neutron radiography

Murakawa, Hideki*; Wada, Daisuke*; Sugimoto, Katsumi*; Asano, Hitoshi*; Takenaka, Nobuyuki*; Yasuda, Ryo

Nuclear Instruments and Methods in Physics Research A, 651(1), p.286 - 289, 2011/09

https://doi.org/10.1016/j.nima.2010.12.047

Evaluation of water distribution in a small operating fuel cell using neutron color image intensifier

Yasuda, Ryo; Nitto, Koichi*; Konagai, Chikara*; Shiozawa, Masahiro*; Takenaka, Nobuyuki*; Asano, Hitoshi*; Murakawa, Hideki*; Sugimoto, Katsumi*; Nojima, Takehiro; Hayashida, Hirotoshi; et al.

Nuclear Instruments and Methods in Physics Research A, 651(1), p.268 - 272, 2011/09

https://doi.org/10.1016/j.nima.2011.01.175

Neutron radiography is one of useful tools to visualize water behavior in fuel cells under operation. In order to observe the detailed information about the water distribution in MEA and GDL in fuel cells, a high spatial resolution and high sensitivity neutron imaging system are required. We developed an imaging system using the neutron color imaging intensifier and continuously observed water distribution in operating a fuel cell. By using the system, a small type fuel cell under operation was continuously observed at the TNRF in every 20 sec. In the results, the water area was appeared from GDL and MEA, and expanded to the channel of the cathode side. On the other hand, voltage was gradually reduced with the operation time, and steeply dropped. It is considered that voltage drop was caused by blockage of gas flow due to the piling up water in the channel of the cathode side.

Visualization and measurement of dynamic water behavior in polymer electrolyte fuel cell by neutron radiography

Ueda, Tadanobu*; Takenaka, Nobuyuki*; Asano, Hitoshi*; Tanimoto, Kazumi*; Mochiki, Koichi*; Kawabata, Yuji*; Matsubayashi, Masahito

Journal of Power and Energy Systems (Internet), 2(3), p.997 - 1008, 2008/00

https://doi.org/10.1299/jpes.2.997

no abstracts in English

Three-dimensional void fraction measurement of two-phase flow in a rod bundle by neutron radiography

; ; Fujii, Terushige*; ; Matsubayashi, Masahito; Tsuruno, Akira

Fifth World Conf. on Neutron Radiography, 0, p.118 - 125, 1996/00

no abstracts in English

Liquid metal flow measurement by neutron radiography

; ; Fujii, Terushige*; ; ; Matsubayashi, Masahito; Tsuruno, Akira

Nuclear Instruments and Methods in Physics Research A, 377, p.156 - 160, 1996/00

https://doi.org/10.1016/0168-9002(96)00134-9

no abstracts in English

Void fraction distribution measurement in two-phase flow by real-time neutron radiography and real-time image processing

; ; Fujii, Terushige*; ; ; ; Matsubayashi, Masahito; Tsuruno, Akira

Nuclear Instruments and Methods in Physics Research A, 377, p.153 - 155, 1996/00

https://doi.org/10.1016/0168-9002(96)00133-7

no abstracts in English

Flow behaviors and void fraction distribution in mini-channel cross-flow vaporizer

Kiyohara, Keita*; Murakawa, Hideki*; Sugimoto, Katsumi*; Kubo, Yohei*; Kurita, Keisuke; Iikura, Hiroshi; Asano, Hitoshi*

no journal, , 

Boiling two-phase flows in mini-channel cross-flow vaporizer had been visualized by two methods, neutron radiography and the method by replacing the outer wall with a transparent wall.

Observation of water distribution in a PEFC cell by neutron imaging

Yasuda, Ryo; Sakai, Takuro; Nojima, Takehiro; Iikura, Hiroshi; Matsubayashi, Masahito; Nitto, Koichi*; Konagai, Chikara*; Shiozawa, Masahiro*; Murakawa, Hideki*; Sugimoto, Katsumi*; et al.

no journal, , 

Polymer electrolyte fuel cells (PEFC) are expected as one of the clean energy sources in next generation. The water management is one of important subjects for enhance of stability and durability of the PEFC. Neutron radiography is one of useful tools to visualize water behavior in operating fuel cells. In order to observe the detailed information about the water distribution in fuel cells, we developed an imaging system using a neutron color image intensifier which is novel neutron image detector with high spatial resolution and high sensitivity. By using the imaging system, the water distribution in a small sized fuel cell during operation was visualized. In this paper we would report results and discussion about correlation between the water behavior and fuel cell performance.