Boiling heat transfer in small rectangular channels at low Reynolds number and mass flux

doi:10.1016/j.expthermflusci.2016.04.022

	Boiling heat transfer in small rectangular channels at low Reynolds number and mass flux
	Wang, Sheng 1; Bi, Xiaotao 2; Wang, Shudong 1
刊名	EXPERIMENTAL THERMAL AND FLUID SCIENCE
	2016-10-01
卷号	77 页码:234-245
关键词	Flow Boiling Heat Transfer Mini-channel Compact Heat Exchangers
ISSN号	0894-1777
DOI	10.1016/j.expthermflusci.2016.04.022
文献子类	Article
英文摘要	Boiling heat transfer experiments were performed in a small rectangular channel (hydraulic diameter, De = 3.0 mm) with water and methanol. The channel size represents the tube configurations in plate fin heat exchangers, which are commonly used for generating hydrogen from hydrogen-rich liquid fuels. The tested mass flux ranged from 6.59 to 21.97 kg m(-2) s, heat flux from 13.3 to 30.1 kW m(-2) and inlet temperatures from ambient to 80 degrees C. Tests were carried out at atmospheric pressure. Local heat transfer coefficients were determined experimentally as a function of vapor quantity along the length of the test section. Insights into heat transfer mechanisms in small channels are presented over a range of Reynolds number from 38 to 263. Experimental results and comparisons with state-of-the-art predictive correlations are presented. The Chen correlation was found to be most suitable for predictions of water boiling heat transfer under the recommended application range for minichannels. For methanol, the Shah correlation was more sound over the range with Re larger than 50, while the Gungor-Winterton equation was more accurate when Re was smaller than 50. In addition, flow boiling instability in minichannels was detected when the flow was dominated by subcooled boiling. However, the periodic oscillations of temperature and pressure disappeared when the heat transfer became dominated by saturated boiling. (C) 2016 Elsevier Inc. All rights reserved.
WOS关键词	SILICON MICROCHANNELS ; GENERAL CORRELATION ; PARALLEL MICROCHANNELS ; TRANSFER COEFFICIENT ; PRESSURE-DROP ; DIAMETER TUBE ; LIQUID FLOW ; INSTABILITIES ; WATER ; CONVECTION
WOS研究方向	Thermodynamics ; Engineering ; Physics
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000377829000021
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170562]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Wang, Sheng; Wang, Shudong
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy DNL, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ British Columbia, Dept Chem & Biol Engn, 2216 Main Mall, Vancouver, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Wang, Sheng,Bi, Xiaotao,Wang, Shudong. Boiling heat transfer in small rectangular channels at low Reynolds number and mass flux[J]. EXPERIMENTAL THERMAL AND FLUID SCIENCE,2016,77:234-245.
APA	Wang, Sheng,Bi, Xiaotao,&Wang, Shudong.(2016).Boiling heat transfer in small rectangular channels at low Reynolds number and mass flux.EXPERIMENTAL THERMAL AND FLUID SCIENCE,77,234-245.
MLA	Wang, Sheng,et al."Boiling heat transfer in small rectangular channels at low Reynolds number and mass flux".EXPERIMENTAL THERMAL AND FLUID SCIENCE 77(2016):234-245.