Experimental study on pool boiling regime transitions of vertical rod quenched in aqueous surfactant solutions using inv
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DOI 10.1007/s12206-020-1032-4
Journal of Mechanical Science and Technology 34 (11) 2020 Original Article DOI 10.1007/s12206-020-1032-4 Keywords: · Critical heat flux · Inverse heat transfer analysis · Minimum film boiling · Quenching · Surfactant
Correspondence to: Chi Young Lee [email protected]
Citation: Kang, D. G., Kim, J. H., Kim, S., Zhang, B. J., Lee, C. Y. (2020). Experimental study on pool boiling regime transitions of vertical rod quenched in aqueous surfactant solutions using inverse heat transfer analysis. Journal of Mechanical Science and Technology 34 (11) (2020) 4753~4761. http://doi.org/10.1007/s12206-020-1032-4
Received April 17th, 2019 Revised
June 28th, 2020
Accepted August 19th, 2020 † Recommended by Editor Yong Tae Kang
Experimental study on pool boiling regime transitions of vertical rod quenched in aqueous surfactant solutions using inverse heat transfer analysis Dong Gu Kang1, Jae Han Kim2, Sunwoo Kim3, Bong June Zhang4 and Chi Young Lee2,5 1
2
Korea Institute of Nuclear Safety, 62 Gwahak-ro, Yuseong-gu, Daejeon 34142, Korea, Department of Fire Protection Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea, 3 4 Mechanical Engineering Department, University of Alaska Fairbanks, Fairbanks, AK 99775, USA, NBD 5 Nanotechnologies, Inc., 419 Western Avenue, Brighton, MA 02135, USA, Division of Architectural and Fire Protection Engineering, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea
Abstract
In this study, the effect of surfactants and liquid temperature on boiling regime transitions of high-temperature rod during quenching was examined using inverse heat transfer analysis. Liquid pools of the aqueous sodium dodecyl sulfate (SDS) and Triton X-100 solutions were used with pure water. In the present experimental range, the critical heat flux (CHF) and minimum film boiling (MFB) point for all test fluids increased as the liquid temperature decreased. On the other hand, the SDS and Triton X-100 surfactants suppressed the CHF and MFB point, which might be due to the enhancement of vapor film stability caused by reduced surface tension. Some previous experimental studies have reported that the surfactants enhance the boiling regime transitions, but their results seem to be contradictory to the present ones. Considering the present study with the previous works, the surfactants seem to have different effect on boiling phenomena depending on the boiling regime. In other words, in the aqueous surfactant solution, the boiling regime transition points seem to be markedly influenced by a path of boiling regime. In addition, boiling mode diagrams were presented for pure water and aqueous surfactant solutions.
1. Introduction
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2020
In order to achieve the higher boiling heat transfer performance, various techniques have been developed and especially applied to a solid surface and a working fluid. For the solid surface, the unique surface trea
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