A preliminary study on material effects of critical heat flux for downward-facing flow boiling

Kai Wang; Chun-Yen Li; Kotaro Uesugi; Nejdet Erkan; Koji Okamoto

doi:https://doi.org/10.1016/j.net.2021.03.024

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자료유형: 학술저널

저자정보: Kai Wang (School of Engineering, The University of Tokyo) Chun-Yen Li (School of Engineering, The University of Tokyo) Kotaro Uesugi (School of Engineering, The University of Tokyo) Nejdet Erkan (School of Engineering, The University of Tokyo) Koji Okamoto (The University of Tokyo)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제9호

발행연도: 2021.9

수록면: 2,839 - 2,846 (8page)

DOI: https://doi.org/10.1016/j.net.2021.03.024

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In this study, experiments of downward-facing flow boiling were conducted to investigate material effects on CHF. Experiments were conducted using aluminum, copper, and carbon steel. It was found thatdifferent materials had different CHFs. Aluminum has the biggest CHF while copper has the lowest CHFfor each mass flux. After experiment, surface wettability increased and surface became rougher, whichwas probably due to the oxidation process during nucleate boiling. The CHF difference is likely to berelated to the surface wettability, roughness and thermal effusivity, which influences the bubble behaviorand in turn affects CHF. Further studies are needed to determine which factor is dominant

#Critical heat flux #Flow boiling #Bubble behavior #Wettability #Surface roughness

참고문헌 (8)

참고문헌 신청

N. I. Kolev / 1995 / How accurately can we predict nucleate boiling? / Exp. Therm. Fluid Sci 10(3):370~378

C. Y. Lee / 2015 / Critical heat flux of oxidized zircaloy surface in saturated water pool boiling / J. Nucl. Sci. Technol 52(4):596~606

J. W. Westwater / 1986 / Suggested standard method for obtaining boiling curves by quenching / Ind. Eng. Chem. Fundam 25(4):685~692

I. Golobic / 1997 / Effects of heater-side factors on the saturated pool boiling critical heat flux / Exp. Therm. Fluid Sci 15(1):43~51

R. J. Moffat / 1988 / Describing the uncertainties in experimental results / Exp. Therm. Fluid Sci 1(1):3~17

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