Critical Heat Flux In Inclined Rectangular Narrow Long Channel

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In the TMI-2 accident, the lower part of the reactor pressure vessel had been overheated and then rather rapidly cooled down, as was later identified in a vessel investigation project. This accounted for the possibility of gap cooling feasibility. For this reason, several investigations were performed to determine the critical heat flux (CHF) from the standpoint of invessel retention. The experiments are conducted to investigate the general boiling phenomena, and the triggering mechanism for the CHF in a narrow gap using a 5 x 105 mm2 crevice type heater assembly and de-mineralized water. The test parameters include the gap size ... continued below

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Rempe, J. L.; Noh, S. W.; Kim, Y. H.; Suh, K. Y.; F.B.Cheung & Kim, S. B. May 1, 2005.

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In the TMI-2 accident, the lower part of the reactor pressure vessel had been overheated and then rather rapidly cooled down, as was later identified in a vessel investigation project. This accounted for the possibility of gap cooling feasibility. For this reason, several investigations were performed to determine the critical heat flux (CHF) from the standpoint of invessel retention. The experiments are conducted to investigate the general boiling phenomena, and the triggering mechanism for the CHF in a narrow gap using a 5 x 105 mm2 crevice type heater assembly and de-mineralized water. The test parameters include the gap size of 5 mm, and the surface orientation angles from the downward facing position (180o) to the vertical position (90o). The orientation angle affects the bubble layer and escape from the narrow gap. The CHF is less than that in a shorter channel, compared with the previous experiments having a heated length of 35 mmin the copper test section.

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  • International Conference on Advanced Power Plants,Seoul, Korea,05/15/2005,05/19/2005

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  • Report No.: INL/CON-05-00024
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 911085
  • Archival Resource Key: ark:/67531/metadc881635

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  • May 1, 2005

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 7, 2016, 4:03 p.m.

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Rempe, J. L.; Noh, S. W.; Kim, Y. H.; Suh, K. Y.; F.B.Cheung & Kim, S. B. Critical Heat Flux In Inclined Rectangular Narrow Long Channel, article, May 1, 2005; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc881635/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.