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RESEARCH PAPER

An Experimental Investigation of Flow Boiling Characteristics of Water in Parallel Microchannels

[+] Author and Article Information
Mark E. Steinke, Satish G. Kandlikar

Thermal Analysis and Microfluidics Laboratory, Mechanical Engineering Department, Kate Gleason College of Engineering, Rochester Institute of Technology, Rochester, NY 14623

J. Heat Transfer 126(4), 518-526 (May 20, 2004) (9 pages) doi:10.1115/1.1778187 History: Received January 13, 2003; Revised May 20, 2004
Copyright © 2004 by ASME
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References

Figures

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Hydraulic diameter versus Reynolds number of previous studies from available literature and present work
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Hydraulic diameter versus Reynolds number of local heat transfer data. For available literature and present work.
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Water loop sub-system. Includes: pressure cooker, flat plate heat exchanger, throttle valve, flow meter, test section, and condenser.
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Heat transfer test section. Test section constructed for data collection.
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Single-phase friction factor versus Reynolds number for adiabatic experiments. For: 161 kg/m2 s<G<1782 kg/m2 s.
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Flow Reversal. Flow is from left to right, single channel shown. Counter flow interface velocity: 0.197 m/s. For: G=467 kg/m2 s,Vf=0.480 m/s,qts=140 kW/m2,x>0.0, and Δt=8 ms.
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Microchannel dry-out. Flow is from left to right, single channel shown. For: G=375 kg/m2 s,qts=632 kW/m2,x=0.63, and Δt=4 ms.
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Dry-out in schematic form. Representation of flow occurring in Fig. 7: (a) channel dry-out, (b) annular slug with liquid head, (c) contact angle shift, (d) vapor penetration at dry-out occurrence, and (e) thinning film as it returns to dry-out.
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Local heat transfer coefficients versus local quality. For: G=157 kg/m2 s;ReLO=116;55 kW/m2<q<278 kW/m2;0<x<1.
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Local heat transfer coefficients versus local quality. For: G=366 kg/m2 s;ReLO=270;119 kW/m2<q<504 kW/m2;0<x<1.
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Local heat transfer coefficients versus local quality. For: G=671 kg/m2 s;ReLO=496;217 kW/m2<q<636 kW/m2;0<x<1.
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Local heat transfer coefficients versus local quality. For: G=1022 kg/m2 s;ReLO=756;348 kW/m2<q<700 kW/m2;0<x<1.
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Local heat transfer coefficients versus local quality. For: G=1782 kg/m2 s;ReLO=1318;610 kW/m2<q<898 kW/m2;0<x<1.
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Critical heat flux versus Reynolds number. For: G=157, 366, 671, 1022, and 1782 kg/m2 s; ReLO=116, 270, 496, 756, and 1318; qchf=340, 539, 666, 764, and 930 kW/m2 .
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Predicted heat transfer coefficient using Kandlikar modified microchannel correlation, 54. Laminar hlo, nucleate boiling dominant only. For: G=157 kg/m2 s;ReLO=116;q=119, 151, and 182 kW/m2 .
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Predicted heat transfer coefficient using Kandlikar modified microchannel correlation, 54. Laminar hlo, nucleate boiling dominant only. For: G=366 kg/m2 s;ReLO=270;q=441, 473, and 504 kW/m2 .

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