Heat transfer performance for high prandtl and high temperature molten salt flow in sphere-packed pipes

Tomoaki Satoh, Kazuhisa Yuki, Shin Ya Chiba, Hidetoshi Hashizume, Akio Sagara

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Heat transfer performance for high Prandtl number and high temperature molten salt flow in a circular pipe and in sphere-packed pipes are evaluated with modified Tohoku-NIFS Thermofluid Loop (TNT loop) using high-temperature molten salt HTS (KNO3 : NaNO2 : NaNO3 = 53 : 40 : 7), as a stimulant of Flibe (LiF : BeF2 = 66 : 34). The modified TNT loop has much longer entrance region to develop a thermal boundary layer, which enable us to obtain more precise heat transfer data. In the modified TNT loop experiments, the heat transfer characteristics in a circular pipe flow have good agreements with the representative correlations. It is obvious that the analogy for heat and momentum transfer is also valid for high-temperature and high-Prandtlnumber molten salt flow. It is also confirmed that the heat transfer performance of sphere-packed pipes increases up to about 4 times higher than that of circular pipe, in case of relatively low flow rate. This can be effective in the Flibe blanket system from the viewpoints of moderating MHD effect and electrolysis.

本文言語English
ページ(範囲)618-624
ページ数7
ジャーナルFusion Science and Technology
52
3
DOI
出版ステータスPublished - 2007 10

ASJC Scopus subject areas

  • 土木構造工学
  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 材料科学(全般)
  • 機械工学

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