Influence of hydrogen addition to a sweep gas on tritium behavior in a blanket module containing Li2TiO3 pebbles

Kazunari Katayama, Y. Someya, K. Tobita, Satoshi Fukada, Y. Hatano, T. Chikada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Hydrogen addition to a sweep gas of a solid breeder blanket module has been proposed to enhance tritium recovery from the surface of the breeders. However, the influence of hydrogen addition on the bred tritium behavior is not understood completely. Tritium behavior in the simplified blanket module of Li2TiO3 pebbles was numerically calculated considering diffusion in the grain bulk, surface reactions on the grain surface and permeation through the cooling pipe. Although a partial pressure of T2 increases with increasing a partial pressure of H2 in the sweep gas, it was estimated that tritium permeation rate to the cooling water decreases. Additionally, the release duration of water vapor generated by the reaction of the pebbles and hydrogen is shortened with increasing a partial pressure of H2. Tritium inventory in the grain bulk and the grain surface occupies 99.6 % of total tritium inventory in the blanket module.

Original languageEnglish
Pages (from-to)221-226
Number of pages6
JournalFusion Engineering and Design
Volume113
DOIs
Publication statusPublished - Dec 1 2016

Fingerprint

Tritium
Hydrogen
Gases
Partial pressure
Permeation
Steam
Surface reactions
Cooling water
Water vapor
Pipe
Cooling
Recovery

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Influence of hydrogen addition to a sweep gas on tritium behavior in a blanket module containing Li2TiO3 pebbles. / Katayama, Kazunari; Someya, Y.; Tobita, K.; Fukada, Satoshi; Hatano, Y.; Chikada, T.

In: Fusion Engineering and Design, Vol. 113, 01.12.2016, p. 221-226.

Research output: Contribution to journalArticle

Katayama, Kazunari ; Someya, Y. ; Tobita, K. ; Fukada, Satoshi ; Hatano, Y. ; Chikada, T. / Influence of hydrogen addition to a sweep gas on tritium behavior in a blanket module containing Li2TiO3 pebbles. In: Fusion Engineering and Design. 2016 ; Vol. 113. pp. 221-226.
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