Transient pool boiling critical heat flux of FC-72 under saturated conditions

Sutopo P. Fitri*, Katsuya Fukuda, Qiusheng Liu, Jongdoc Park

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In this study, the steady-state and transient critical heat fluxes (CHFs) in pool boiling were measured on 1.0 mm diameter horizontal cylinders of gold and platinum heaters under saturated conditions due to transient heat inputs, Q0exp(t/τ), in a pool of Fluorinert FC-72. Heaters were heated by electric current with the periods, τ, ranged from 10 ms to 20 s, and the pressures ranged from atmospheric up to around 1.2 MPa. The steady-state CHFs measured are dependent on pressure and almost agree with the values obtained by Kutateladze's correlation based on hydrodynamic instability (HI) model. It was considered that the boiling inception and the direct transition during the steady-state period occur by the pre-pressure of ∼ 1.2 MPa. The trend of typical transient CHFs were clearly divided into the first, second, and third groups for long, short, and intermediate periods, respectively. The direct transition processes to film boiling without nucleate boiling for the short periods obtained from both heaters were confirmed due to the heterogeneous spontaneous nucleation (HSN) in flooded cavities on the cylinder surface. The empirical correlations to express each of corresponding CHFs measured on both heaters for the short periods are presented in this paper.

Original languageEnglish
Title of host publicationFourteenth International Conference on Nuclear Engineering 2006, ICONE 14
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventFourteenth International Conference on Nuclear Engineering 2006, ICONE 14 - Miami, FL, United States
Duration: 17 Jul 200620 Jul 2006

Publication series

NameInternational Conference on Nuclear Engineering, Proceedings, ICONE
Volume2006

Conference

ConferenceFourteenth International Conference on Nuclear Engineering 2006, ICONE 14
Country/TerritoryUnited States
CityMiami, FL
Period17/07/0620/07/06

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