Correlations of nucleate boiling heat transfer and critical heat flux for external reactor vessel cooling

J. Yang, F. B. Cheung, K. Y. Suh, J. L. Rempe, S. B. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Four types of steady-state boiling experiments were conducted to investigate the efficacy of two distinctly different heat transfer enhancement methods for external reactor vessel cooling under severe accident conditions. One method involved the use of a thin vessel coating and the other involved the use of an enhanced insulation structure. By comparing the results obtained in the four types of experiments, the separate and integral effect of vessel coating and insulation structure were determined. Correlation equations were obtained for the nucleate boiling heat transfer and the critical heat flux. It was found that both enhancement methods were quite effective. Depending on the angular location, the local critical heat flux could be enhanced by 1.4 to 2.5 times using vessel coating alone whereas it could be enhanced by 1.8 to 3.0 times using an enhanced insulation structure alone. When both vessel coating and insulation structure were used simultaneously, the integral effect on the enhancement was found much less than the product of the two separate effects, indicating possible competing mechanisms (i.e., interference) between the two enhancement methods.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Summer Heat Transfer Conference, HT 2005
Pages99-108
Number of pages10
DOIs
StatePublished - 2005
Event2005 ASME Summer Heat Transfer Conference, HT 2005 - San Francisco, CA, United States
Duration: Jul 17 2005Jul 22 2005

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference
Volume2

Other

Other2005 ASME Summer Heat Transfer Conference, HT 2005
CountryUnited States
CitySan Francisco, CA
Period7/17/057/22/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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