Effect of hydrated salt additives on film boiling behavior at vapor film collapse

Takahiro Arai*, Masahiro Furuya


研究成果: Article査読

2 被引用数 (Scopus)


A high-temperature stainless steel sphere was immersed into various salt solutions to investigate film boiling behavior at vapor film collapse. The film boiling behavior around the sphere was observed with a high-speed digital-video camera. Because the salt additives enhance the condensation heat transfer, the observed vapor film was thinner. The surface temperature of the sphere was measured. Salt additives increased the quenching (vapor film collapse) temperature because the frequency of direct contact between the sphere surface and the coolant increased. Quenching temperature increases with increased salt concentration. The quenching temperature, however, approaches a constant value when the salt concentration is close to its saturation concentration. The quenching temperature is well correlated with ion molar concentration, which is a number density of ions, regardless of the type of hydrated salts.

ジャーナルJournal of Engineering for Gas Turbines and Power
出版ステータスPublished - 2009 1月 1

ASJC Scopus subject areas

  • 原子力エネルギーおよび原子力工学
  • 燃料技術
  • 航空宇宙工学
  • エネルギー工学および電力技術
  • 機械工学


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