Comparison of bubble parameters between boiling and hydrogen evolving systems

Park Hae-Kyun; Chung Bum-Jin

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Comparison of bubble parameters between boiling and hydrogen evolving systems

机译：沸腾与氢不变系统之间的泡沫参数比较

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Bubble behavior in a hydrogen evolving system was compared to that under boiling conditions. Hydrogen was generated electrochemically in an aqueous solution of 1.5 M sulfuric acid (H2SO4). Hydrogen bubble parameters such as active nucleation site density, bubble departure diameter, and bubble frequency, were measured and compared to those observed during boiling. The hydrogen evolving system exhibited higher active nucleation site density that increased, and smaller departure diameters that gradually decreased, with increasing current density. Bubble growth time, which is related to bubble frequency, was shorter in the hydrogen evolving system due to smaller departure diameters. This study provides experimental evidence supporting the analogous relationship between bubble formation in boiling and that in hydrogen evolving systems.

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来源
《Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics》 |2021年第1期|共8页
作者
Park Hae-Kyun; Chung Bum-Jin;
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作者单位

Kyung Hee Univ Dept Nucl Engn 1732 Deogyeong Daero Yongin 17104 Gyeonggi Do South Korea;

Kyung Hee Univ Dept Nucl Engn 1732 Deogyeong Daero Yongin 17104 Gyeonggi Do South Korea;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Analogy; Hydrogen evolving system; Boiling system; Active nucleation site density; Bubble departure diameter; Bubble frequency;

机译：类比;氢不断发展的系统;沸腾系统;活跃成核位点密度;泡沫偏离直径;泡沫频率;

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Comparison of bubble parameters between boiling and hydrogen evolving systems

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