ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels最新文献_第3页

Development of a Hybrid Heat Sink for Thermal Management of Photovoltaic Cells 光伏电池热管理用混合式散热器的研制

ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels Pub Date : 2019-10-29 DOI: 10.1115/icnmm2019-4244

Danish Rahman, A. Almomani, Ibrahim Hassan, Y. Al-Hamidi, A. Rahman

引用次数: 0

An Approximate Method of Analysis for Laminar Heat Transfer in Liquid-Liquid Taylor Flows in Mini Scale Tubing 小型管中液-液泰勒流层流换热的近似分析方法

ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels Pub Date : 2019-10-29 DOI: 10.1115/icnmm2019-4217

K. Alrbee, Y. Muzychka, X. Duan

{"title":"An Approximate Method of Analysis for Laminar Heat Transfer in Liquid-Liquid Taylor Flows in Mini Scale Tubing","authors":"K. Alrbee, Y. Muzychka, X. Duan","doi":"10.1115/icnmm2019-4217","DOIUrl":"https://doi.org/10.1115/icnmm2019-4217","url":null,"abstract":"\u0000 Heat transfer analysis of liquid-liquid Taylor flow in previous studies almost never shows the effect of slug length on heat transfer. The homogenous or single-phase analysis is often the only method available to deal with flow of multi components. In the present study a new approach is developed to model the segmented liquid-liquid Taylor flow as two separated systems and presenting heat transfer enhancement for each component. The effect of internal circulation and boundary layer renewal within the two fluid components is clearly observed. An experimental setup was assembled using open loop system at mini scale size in which liquid-liquid Taylor flow is heated under a constant wall temperature. Three silicone oils of 1, 3, and 5 cSt were segmented using distilled water at three volume fractions 0.25, 0.5 and 0.75. Finally, heat transfer data of the dimensionless mean wall heat flux shows good agreement with a predictive model proposed in an earlier work by the second author. The results show an impact of the fluid cell dimensions on the rate of heat transfer.","PeriodicalId":221056,"journal":{"name":"ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133056286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Numerical Simulation of Liquid-Liquid Taylor Flow With Heat Transfer 带传热的液-液泰勒流动数值模拟

ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels Pub Date : 2019-10-29 DOI: 10.1115/icnmm2019-4214

M. Kwakkel, M. Fernandino, C. Dorao

引用次数: 0

Design and Scale-up of Modular Capillary Helical Flow Inverter Reactors With Narrow Residence Time Distribution 窄停留时间分布模块化毛细管螺旋流反相反应器的设计与放大

ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels Pub Date : 2019-10-29 DOI: 10.1115/icnmm2019-4237

N. Kockmann, W. Krieger, Mira Schmalenberg

{"title":"Design and Scale-up of Modular Capillary Helical Flow Inverter Reactors With Narrow Residence Time Distribution","authors":"N. Kockmann, W. Krieger, Mira Schmalenberg","doi":"10.1115/icnmm2019-4237","DOIUrl":"https://doi.org/10.1115/icnmm2019-4237","url":null,"abstract":"\u0000 Lab-on-chip processes often require long dwelling times leading to coiled capillary reactors with laminar flow. These tubular reactors are designed for a reaction time, unfortunately with a wide residence time distribution. This contribution presents a modular concept based on coiled flow inverters (CFI), which achieve high radial mixing with narrow residence time distribution at low Reynolds numbers [1]. The modular design enables quick adaptation to changing residence times and flow rates with low pressure loss. The tube diameters range from capillaries with a few 100 μm to several millimeters for high throughput and long residence time.\u0000 With the aid of a design space diagram, the required pipe diameters and lengths can be quickly determined based on standardized coil diameters [2]. The modular concept enables various arrangements for different residence time and flow rate requirements with minimum pressure loss. In the laboratory, for example, a chemical process in the throughput range of a few grams per hour can be developed and processed in the simple device. The results can be scaled via the platform concept to higher production rates with constant residence time characteristics. The scale-up concept can easily be displayed and designed graphically in the reactor performance diagram.","PeriodicalId":221056,"journal":{"name":"ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels","volume":"408 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123556769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermoreflectance Wall Temperature Measurement in Annular Two-Phase Flow 环空两相流热反射壁温测量

ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels Pub Date : 2019-06-23 DOI: 10.1115/icnmm2019-4249

Jason Chan, Brian Fehring, Roman W. Morse, Kristofer M. Dressler, G. Nellis, E. Hurlburt, A. Berson

引用次数: 0