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Research Papers: Micro/Nanoscale Heat Transfer

Addressing Two-Phase Flow Maldistribution in Microchannel Heat and Mass Exchangers

[+] Author and Article Information
Dhruv C. Hoysall

Mem. ASME
G.W. Woodruff School of
Mechanical Engineering,
Georgia Institute of Technology,
Atlanta, GA 30332
e-mail: dhoysall3@gatech.edu

Khoudor Keniar

Mem. ASME
G.W. Woodruff School of
Mechanical Engineering,
Georgia Institute of Technology,
Atlanta, GA 30332
e-mail: kkeniar3@gatech.edu

Srinivas Garimella

Fellow ASME
G.W. Woodruff School of
Mechanical Engineering,
Georgia Institute of Technology,
Atlanta, GA 30332
e-mail: sgarimella@gatech.edu

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received October 17, 2017; final manuscript received June 21, 2018; published online July 23, 2018. Assoc. Editor: Guihua Tang.

J. Heat Transfer 140(11), 112402 (Jul 23, 2018) (9 pages) Paper No: HT-17-1615; doi: 10.1115/1.4040706 History: Received October 17, 2017; Revised June 21, 2018

Multiphase flow phenomena in single micro and minichannels have been widely studied. Characteristics of two-phase flow through a large array of microchannels are investigated here. An air–water mixture is used to represent the two phases flowing through a microchannel array representative of those employed in practical applications. Flow distribution of the air and water flow across 52 parallel microchannels of 0.4 mm hydraulic diameter is visually investigated using high-speed photography. Two microchannel configurations are studied and compared, with mixing features incorporated into the second configuration. Slug and annular flow regimes are observed in the channels. Void fractions and interfacial areas are calculated for each channel from these observations. The flow distribution is tracked at various lengths along the microchannel array sheets. Statistical distributions of void fraction and interfacial area along the microchannel array are measured. The design with mixing features yields improved flow distribution. Void fraction and interfacial area change along the length of the second configuration, indicating a change in fluid distribution among the channels. The void fraction and interfacial area results are used to predict the performance of different microchannel array configurations for heat and mass transfer applications. Results from this study can help inform the design of compact thermal-fluid energy systems.

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References

Ozawa, M. , Akagawa, K. , and Sakaguchi, T. , 1989, “ Flow Instabilities in Parallel-Channel Flow Systems of Gas-Liquid Two-Phase Mixtures,” Int. J. Multiphase Flow., 15(4), pp. 639–657. [CrossRef]
Tshuva, M. , Barnea, D. , and Taitel, Y. , 1999, “ Two-Phase Flow in Inclined Parallel Pipes,” Int. J. Multiphase Flow., 25(6–7), pp. 1491–1503. [CrossRef]
Kandlikar, S. G. , and Balasubramanian, P. , 2005, “ An Experimental Study on the Effect of Gravitational Orientation on Flow Boiling of Water in 1054 × 197 μm Parallel Minichannels,” ASME J. Heat Transfer., 127(8), pp. 820–829.
Balasubramanian, P. , and Kandlikar, S. G. , 2005, “ Experimental Study of Flow Patterns, Pressure Drop, and Flow Instabilities in Parallel Rectangular Minichannels,” Heat Transfer Eng., 26(3), pp. 20–27. [CrossRef]
Rong, X. , Kawaji, M. , and Burgers, J. G. , 1996, Gas-Liquid and Flow Rate Distributions in Single End Tank Evaporator Plates, SAE International, Detroit, MI.
Kandlikar, S. G. , Steinke, M. , Tian, S. , and Campbell, L. A. , 2001, “ High-Speed Photographic Observation of Flow Boiling of Water in Parallel Mini-Channels,” 35th National Heat Transfer Conference, Anaheim, CA, June 10–12.
Hetsroni, G. , Mosyak, A. , Segal, Z. , and Pogrebnyak, E. , 2003, “ Two-Phase Flow Patterns in Parallel Micro-Channels,” Int. J. Multiphase Flow., 29(3), pp. 341–360. [CrossRef]
Peles, Y. , 2003, “ Two-Phase Boiling Flow in Microchannels: Instabilities Issues and Flow Regime Mapping,” ASME Paper No. ICMM2003-1069.
Kim, Y. J. , Joshi, Y. K. , Fedorov, A. G. , Lee, Y.-J. , and Lim, S.-K. , 2010, “ Thermal Characterization of Interlayer Microfluidic Cooling of Three-Dimensional Integrated Circuits With Nonuniform Heat Flux,” ASME J. Heat Transfer., 132(4), p. 041009. [CrossRef]
Yoon, S. H. , Saneie, N. , and Kim, Y. J. , 2014, “ Two-Phase Flow Maldistribution in Minichannel Heat-Sinks Under Non-Uniform Heating,” Int. J. Heat Mass Transfer., 78, pp. 527–537. [CrossRef]
Vist, S. , and Pettersen, J. , 2004, “ Two-Phase Flow Distribution in Compact Heat Exchanger Manifolds,” Exp. Therm. Fluid Sci., 28(2–3), pp. 209–215. [CrossRef]
Marchitto, A. , Devia, F. , Fossa, M. , Guglielmini, G. , and Schenone, C. , 2008, “ Experiments on Two-Phase Flow Distribution Inside Parallel Channels of Compact Heat Exchangers,” Int. J. Multiphase Flow., 34(2), pp. 128–144. [CrossRef]
Fei, P. , and Hrnjak, P. , 2004, “ Adiabatic Developing Two-Phase Refrigerant Flow in Manifolds of Heat Exchangers,” University of Illinois at Urbana-Champaign, Urbana, IL, Report No. 225.
Ahmad, M. , Berthoud, G. , and Mercier, P. , 2009, “ General Characteristics of Two-Phase Flow Distribution in a Compact Heat Exchanger,” Int. J. Heat Mass Transfer., 52(1–2), pp. 442–450. [CrossRef]
Mahvi, A. J. , and Garimella, S. , 2017, “ Visualization of Flow Distribution in Rectangular and Triangular Header Geometries,” Int. J. Refrig., 76(Suppl. C), pp. 170–183. [CrossRef]
Rong, X. , Kawaji, M. , and Burgers, J. , 1995, “ Two-Phase Header Flow Distribution in a Stacked Plate Heat Exchanger,” Gas-Liq. Flows, 225, pp. 115–122.
Nagavarapu, A. K. , and Garimella, S. , 2011, “ Design of Microscale Heat and Mass Exchangers for Absorption Space Conditioning Applications,” ASME J. Therm. Sci. Eng. Appl., 3(2), p. 021005. [CrossRef]
Determan, M. D. , and Garimella, S. , 2012, “ Design, Fabrication, and Experimental Demonstration of a Microscale Monolithic Modular Absorption Heat Pump,” Appl. Therm. Eng., 47(0), pp. 119–125. [CrossRef]
Mandhane, J. M. , Gregory, G. A. , and Aziz, K. , 1974, “ A Flow Pattern Map for Gas—Liquid Flow in Horizontal Pipes,” Int. J. Multiphase Flow., 1(4), pp. 537–553. [CrossRef]
Mehdizadeh, A. , Sherif, S. A. , and Lear, W. E. , 2009, “ CFD Modeling of Two-Phase Gas-Liquid Slug Flow Using Vof Method in Microchannels,” ASME Paper No. FEDSM2009-78438.
Winkler, J. , Killion, J. , and Garimella, S. , 2012, “ Void Fractions for Condensing Refrigerant Flow in Small Channels. Part Ii: Void Fraction Measurement and Modeling,” Int. J. Refrig., 35(2), pp. 246–262. [CrossRef]
Kawahara, A. , Chung, P. M.-Y. , and Kawaji, M. , 2002, “ Investigation of Two-Phase Flow Pattern, Void Fraction and Pressure Drop in a Microchannel,” Int. J. Multiphase Flow., 28(9), pp. 1411–1435. [CrossRef]
Keinath, B. , and Garimella, S. , 2016, “ Measurement and Modeling of Void Fraction in High-Pressure Condensing Flows Through Microchannels,” Heat Transfer Eng., 37(13–14), pp. 1172–1180. [CrossRef]
Garimella, S. , Agarwal, A. , and Killion, J. D. , 2005, “ Condensation Pressure Drop in Circular Microchannels,” Heat Transfer Eng., 26(3), pp. 28–35. [CrossRef]

Figures

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Fig. 1

Schematic of experimental setup

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Fig. 2

Microchannel test sections

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Fig. 11

Distribution of interfacial area in test section 1

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Fig. 10

Void fraction variation with window

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Fig. 8

Representative void fraction distribution in test section 1

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Fig. 7

Processed image showing interfaces and channel boundaries

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Fig. 6

Binary image obtained after initial processing

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Fig. 5

Data reduction algorithm for the analysis of flow videos

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Fig. 12

Interfacial area intensity variation with window

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Fig. 14

Distribution of two-phase mixture in microchannel absorber

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Fig. 13

Flow across the mixing section

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Fig. 4

Representative image of flow through test section

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Fig. 3

Illustration of the test section assembly

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Fig. 9

Evolution of void fraction distribution with length

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Fig. 15

Channel wise heat transfer in absorber

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