Measurement of the minimum film boiling temperature for low-pressure and low-flow rate flow boiling

Byoung Jae Kim, Jun Seok Park, Jong Kuk Park, Sang Ki Moon, Kyung Doo Kim, Hyung Dae Kim, Jae Seok Heo

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

Abstract

Safety analysis codes for nuclear reactors utilize the minimum film boiling temperature as a decision parameter whether or not the fuel cladding is wetted by the coolant during the reflooding process. In spite of its importance, however, previous correlations for the minimum film boiling temperature have been based mostly on pool boiling or not-low pressure flow boiling. In general, reflooding proceeds at a low flow rate (∼cm/s) under a low pressure (∼bar). Thus, it is not reasonable to directly apply existing correlations to predict the quenching temperature for bottom reflooding. This study is devoted to measure the minimum fdm boiling temperature for vertical flow boiling at low pressures and mass fluxes. A hot-patch technique was used to form a stable vapor fdm in a vertical tube. In this study, the quenching temperature is the minimum film boiling temperature at which a vapor fdm collapses spontaneously.

Original languageEnglish
Title of host publicationInternational Congress on Advances in Nuclear Power Plants, ICAPP 2014
PublisherAmerican Nuclear Society
Pages1480-1485
Number of pages6
ISBN (Print)9781632668264
Publication statusPublished - 2014
EventInternational Congress on Advances in Nuclear Power Plants, ICAPP 2014 - Charlotte, NC, United States
Duration: 6 Apr 20149 Apr 2014

Publication series

NameInternational Congress on Advances in Nuclear Power Plants, ICAPP 2014
Volume2

Conference

ConferenceInternational Congress on Advances in Nuclear Power Plants, ICAPP 2014
Country/TerritoryUnited States
CityCharlotte, NC
Period6/04/149/04/14

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