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TECHNICAL PAPERS: Evaporation, Boiling, and Condensation

Evaporation Heat Transfer in Sintered Porous Media

[+] Author and Article Information
M. A. Hanlon

Aperion Energy Systems, Inc., 398 Dix Road, Suite 102, Jefferson City, MO 65109

H. B. Ma

Department of Mechanical and Aerospace Engineering, University of Missouri—Columbia, Columbia, MO 65211

J. Heat Transfer 125(4), 644-652 (Jul 17, 2003) (9 pages) doi:10.1115/1.1560145 History: Received March 11, 2002; Revised November 01, 2002; Online July 17, 2003
Copyright © 2003 by ASME
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References

Busse,  C. A., and Stephan,  P. C., 1993, “Analysis of the Heat Transfer Coefficient of Grooved Heat Pipe Evaporator Walls,” Int. J. Heat Mass Transf., 35(2), pp. 383–391.
Wayner,  P. C., 1994, “Thermal and Mechanical Effect in the Spreading of a Liquid Film Due to a Change in the Apparent Finite Contact Angle,” ASME J. Heat Transfer, 117(4), pp. 938–945.
Khrustalev,  D., and Faghri,  A., 1995, “Heat Transfer During Evaporation on Capillary-Grooved Structures of Heat Pipes,” ASME J. Heat Transfer, 117(3), pp. 938–945.
Kobayashi,  Y., Ikeda,  S., and Iwasa,  M., 1996, “Evaporative Heat Transfer at the Evaporative Section of A Grooved Heat Pipe,” J. Thermophys. Heat Transfer, 10(1), pp. 83–89.
Ma,  H. B., and Peterson,  G. P., 1997, “Temperature Variation and Heat Transfer in Triangular Grooves with an Evaporating Film,” J. Thermophys. Heat Transfer, 11, pp. 90–97.
Hallinan, K. P., Allen, J. S., and Pratt, D. M., 1999, “Investigation the Relationship between Thin Film Dynamics and Evaporation at a Meniscus in a Capillary,” Proceedings of the 5th ASME/JSME Joint Thermal Engineering Conference, March 15–19, San Diego, CA.
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Webb, R. L., 1994, Principles of Enhanced Heat Transfer, John Wiley & Sons, Inc, New York.
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Bau,  H. H., and Torrance,  K. E., 1982, “Boiling in Low-Permeability Porous Materials,” Int. J. Heat Mass Transf., 25(1), pp. 45–55.
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Ma, H. B., and Peterson, G. P., 1997, “Experimental Investigation of the Thermal Capillary Limit of a Novel Micro Heat Pipe Design,” Proceedings of the 35th AIAA Aerospace Sciences Meeting, Reno, NV, Jan. 6–10.
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Peterson, G. P., 1994, An Introduction to Heat Pipes, John Wiley and Sons, Inc., New York.
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Hausner, H., and Mal, M. K., 1982, Handbook of Powder Metallurgy, Second Ed., Chemical Publishing Co, Inc., New York.

Figures

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Thin film evaporation in sintered particles
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Schematic of two-dimensional fluid flow and evaporation in a sintered wick structure
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(a) Schematic of the experimental system; (b) test section; and (c) solid model of the heater fabricated for experimentation (cylinder diameter is 2.54 cm, top surface is 1×2 cm2 , and length of rectangular neck is 2 cm)
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Wick thickness effect on the temperature drop (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Heat flux level effect on the temperature drops (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Wick thickness effect on the evaporating heat transfer coefficients (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Comparison of the calculated results with the experimental data (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Wick thickness effect on the capillary and boiling limitations (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Wick thickness effect on the temperature distribution (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Particle size effect on the dryout heat flux (L=0.254 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Porosity effect on the dryout heat flux (rb=0.635 mm; ε=43 percent; LH=0.01 m; working fluid=water)
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Entry length effect on the dryout heat flux (rb=0.635 mm;Tsat=373.15 K; ε=43 percent; LH=0.01 m; working fluid=water)  

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