On the formation of vapor film during quenching in de-ionized water and elimination of film boiling during quenching in natural sea water

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Shu-Han Hsu
  • Yuan-Hong Ho
  • Ming-Xi Ho
  • Jian-Chiuan Wang
  • Chin Pan

Detail(s)

Original languageEnglish
Pages (from-to)65-71
Journal / PublicationInternational Journal of Heat and Mass Transfer
Volume86
Online published13 Mar 2015
Publication statusPublished - Jul 2015
Externally publishedYes

Abstract

The present study explores the quenching of two metallic spheres, i.e., stainless steel 304 and zircaloy-702, respectively, in natural sea water, compared with that in de-ionized water. The diameters of the spheres are 17.5 mm. In this study, the superiority of sea water compared to deionized water for nuclear power plant quenching was established. By visualization using a high-speed video camera, it was observed that when deionized water was used for quenching, the formation of a stable vapor film around the metallic quenching test spheres was not immediate as traditionally thought, but occurred through the coalescence of nucleated bubbles at ultra-high temperatures. Conversely, sea water was observed to enable much more rapid quenching through the prevention of stable film boiling due to a zeta-potential effect and quenching starting with transition boiling characterized with moderate bubble nucleation sites and possible burst out of bubble clusters.

Research Area(s)

  • Dissolved salt, Leidenfrost temperature, Quenching, Transition boiling, Zeta potential

Citation Format(s)

On the formation of vapor film during quenching in de-ionized water and elimination of film boiling during quenching in natural sea water. / Hsu, Shu-Han; Ho, Yuan-Hong; Ho, Ming-Xi; Wang, Jian-Chiuan; Pan, Chin.

In: International Journal of Heat and Mass Transfer, Vol. 86, 07.2015, p. 65-71.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal