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题名: The Characteristics of Pressure Drop in Microchannels
作者: Su, Hongjiu1, 2;  Niu, Haining2;  Pan, Liwei2;  Wang, Shudong1;  Wang, Anjie1;  Hu, Yongkang1
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
发表日期: 2010-04-21
DOI: 10.1021/ie9015045
卷: 49, 期:8, 页:3830-3839
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: The characteristics of the pressure drop of fluid were investigated in three different kinds of stainless steel microchannels with diameter of 0.56, 1.00, and 1.80 mm based on the absorption in the microchannels. For the single-phase flow pressure drop, nitrogen being used as the test fluid, it was found that the transition between the laminar and turbulent flow occurred at the Reynolds number of about 2000, which was different from some previous reports in which the early flow transition was observed in microchannels. For the two-phase flow pressure drop, an industrial chemical absorbent (40 wt % MDEA solution) and nitrogen being taken as the working fluid, it was found that the existing correlations including the homogeneous flow model and separated flow model failed to predict the experimental results because of the special operating condition in which the ratio of volumetric flow rate of gas to liquid phase ranged from 100 to 3400. A new correlation to predict the two-phase flow pressure drop was developed in the form of the Lockhart-Martinelli type which considered the effect of surface tension, gas phase inertial force, Reynolds number of liquid phase, and the Martinelli parameter. The predicted data with new correlation showed good agreement with the experimental results.
关键词[WOS]: TRAPEZOIDAL SILICON MICROCHANNELS ;  LIQUID 2-PHASE FLOW ;  RECTANGULAR CHANNELS ;  FRICTION FACTORS ;  MASS-TRANSFER ;  WATER ;  MICROTUBES ;  PATTERN ;  REGIMES ;  REACTOR
语种: 英语
WOS记录号: WOS:000276554200036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141781
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Su, Hongjiu,Niu, Haining,Pan, Liwei,et al. The Characteristics of Pressure Drop in Microchannels[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2010,49(8):3830-3839.
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