Abstract
A new hybrid bi-modal wick structure was designed and fabricated in this study with the objective to simultaneously enhance performance in capillary pumping, permeability and evaporative heat transfer. Utilizing substrates with large pores and sintered powders, a highly integrated bi-modal wick structure was created with small pores lining the walls of the large pores. This unique structure can be tailored to a number of different configurations, including uniform, radial and axially varied pore morphologies. Tests of heat pipes containing the bi-modal wick structure in various configurations revealed increases in effective thermal conductivity by as much as 400% as compared to baseline heat pipes containing monolithic wick materials such as copper mesh.
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References
T.C. Jen, G. Gutierrez, S. Eapen, G. Barber, H. Zhao, P.S. Szuba, J. Labataille, J. Manjunathaiah, Int. J. Mach. Tool Manu. 42, 643–652 (2002)
S.W. Chi, Heat Pipe Theory and Practice: A Sourcebook (McGraw-Hill Book Company, New York, NY, 1976)
P. Dunn, D.A. Reay, Heat Pipes, 2nd edn. (Pergamon Press, Oxford, England, 1978)
G.P. Petersen, An Introduction to Heat Pipes (John Wiley and Sons, Inc., New York, NY, 1994)
A. Faghri, Heat Pipe Science and Technology (Taylor and Francis, Washington, USA, 1995)
A. Gupta, G. Upadhya, Adv. Electron. Pack. 2, 2129–2137 (1999)
B.D. Marcus, Theory and Design of Variable Conductance Heat Pipe, Report No. CR-2018 (NASA, Washington, DC, 1972)
C.A. Busse, A. Campanile, J. Loens, in 1st International Heat Pipe Conference, Stuttgart, 1973
R. Williams, D. Harris, Exp. Thermal Fluid. Sci. 27, 227–235 (2003)
R.A. Freggens, in Proceedings of the 4th Intersociety Energy Conversion Engineering Conference, pp. 888–897, 1969
K.C. Leong, C.Y. Liu, J. Porous Mater. 4, 303–308 (1997)
E.G. Reimbrecht, P. Wendhausen, M.C. Fredel, E. Bazzo, Key Eng. Mater. 189–191, 455–460 (2001)
T. Kajikawa, H. Takazawa, Heat Transfer Eng. 4(1), 57–66 (1983)
A. Brautsch, P. Kew, Appl. Thermal Eng. 22, 815–824 (2002)
M. North, R. Rosenfeld, Liquid Film Evaporation from Bidisperse Capillary Wicks in Heat Pipe Evaporators (Thermacore, Inc., Lancaster, PA, year unknown)
M. Hanlon, H. Ma, Trans. ASME 125, 644–652 (2003)
G. Gati, G. Celata, M. Cumo, M. Furrer, Revue. Gen. Thermique. 37, 5–16 (1998)
W. Fischer, G. Gammel, Heat Pipe with a Sintered Capillary Structure, US Patent 3,840,069, (1974)
J. Wang, in Proceedings of ASME 35th National Heat Transfer Conference (Anaheim California, 2001) pp. 1063–1070
S.K. Konev, F. Polasek, L. Horvat, Heat Transfer Sov. Res. 19(1), 14–17 (1987)
J. Wang, W. Catton, in 17th IEEE SEMI – THERM Symposium, pp. 211–218, (2001)
Y. Léon, C.A. Léon, Adv. Colloid Interface Sci. 76–77, 341–372 (1998)
Acknowledgements
The authors thank the Ontario Centers of Excellence for providing financial support for this research under the Emerging Materials Knowledge program. The testing of the heat pipes was carried out by Mr. Feng Cai and his dedication is greatly appreciated. The authors would also like to acknowledge Dr. Tarik Kaya for introducing us to heat pipes.
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Huang, X., Franchi, G. Design and fabrication of hybrid bi-modal wick structure for heat pipe application. J Porous Mater 15, 635–642 (2008). https://doi.org/10.1007/s10934-007-9143-1
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DOI: https://doi.org/10.1007/s10934-007-9143-1