Bubble behaviors during subcooled pool boiling in water and nonionic surfactant aqueous solution

doi:10.1016/j.ijheatmasstransfer.2020.120087

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	Bubble behaviors during subcooled pool boiling in water and nonionic surfactant aqueous solution
	Guo, Dong-Sheng 2; Li, Xiao-Bin 2; Zhang, Hong-Na 2; Li, Feng-Chen 2; Su, Wen-Tao 3; Zhu, Han 1,2
刊名	International Journal of Heat and Mass Transfer
	2020-10-01
卷号	159
关键词	Coalescence Nonionic surfactants Bubble coalescence Bubble interaction Enhanced heat transfer Liquid subcooling Penetration behavior Surface tension gradient Surfactant molecules Surfactant solution
ISSN号	00179310
DOI	10.1016/j.ijheatmasstransfer.2020.120087
英文摘要	A visualization study of the bubble behavior in pool boiling of ultra-pure water and surfactant aqueous solution (Triton X-114) under different heat fluxes was performed, using a narrow transparent bare FTO heating surface with various subcooling degrees of 5°C, 25°C and 35°C, respectively. It is shown that with the decrease of liquid subcooling, bubble coalescence in ultra-pure water becomes obvious. Whilst with the increase of liquid subcooling, the bubble surface gets rough and unstable. In contrast, a newly discovered phenomenon of bubble-bubble (BB) penetration occurs in the surfactant solution under the same working condition as that in water. BB penetration behavior is a bubble interaction without coalescence. This bubble behavior is believed to be the results of micro-convection due to the shrinkage of the bubble root, and the Marangoni effect due to the surface tension gradient. Combination of Marangoni effect and bubble surface movement causes the surfactant molecules to aggregate toward the bubble root, and it effectively promotes the nucleation of the next bubble. Owe to the rapid growth of newly nucleated bubbles, the bubble-bubble penetration and piercing behaviors happen during the growth stage. The newly nucleated bubble partially accelerates the first bubble departure, also interacts with the first bubble by forming a tiny vapor channel. This phenomenon should be one of the reasons of enhanced heat transfer using surfactant solutions. © 2020
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000560367300031
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115676]
专题	兰州理工大学能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai; 519082, China; 3.College of Petroleum Engineering, Liaoning Shihua University, Fushun; 113001, China;
推荐引用方式 GB/T 7714	Guo, Dong-Sheng,Li, Xiao-Bin,Zhang, Hong-Na,et al. Bubble behaviors during subcooled pool boiling in water and nonionic surfactant aqueous solution[J]. International Journal of Heat and Mass Transfer,2020,159.
APA	Guo, Dong-Sheng,Li, Xiao-Bin,Zhang, Hong-Na,Li, Feng-Chen,Su, Wen-Tao,&Zhu, Han.(2020).Bubble behaviors during subcooled pool boiling in water and nonionic surfactant aqueous solution.International Journal of Heat and Mass Transfer,159.
MLA	Guo, Dong-Sheng,et al."Bubble behaviors during subcooled pool boiling in water and nonionic surfactant aqueous solution".International Journal of Heat and Mass Transfer 159(2020).