Condensation Heat Transfer in Horizontal Non-Circular Microchannels

DOI: 10.4236/epe.2013.59063   PDF   HTML   XML   3,628 Downloads   5,824 Views   Citations


This investigation contributes to a better understanding of condensation heat transfer in horizontal non-circular microchannels. For this purpose, the conservation equations of mass, momentum and energy have been numerically solved in both phases (liquid and vapor), and all the more, so the film thickness analytical expression has been established. Numerical results relative to variations of the meniscus curvature radius, the condensate film thickness, the condensation length and heat transfer coefficients, are analyzed in terms of the influencing physical and geometrical quantities. The effect of the microchannel shapes on the average Nusselt number is highlighted by studying condensation of steam insquare, rectangular and equilateral triangular microchannels with the same hydraulic diameter of 250 μm.

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H. Mghari, M. Asbik and H. Louahlia-Gualous, "Condensation Heat Transfer in Horizontal Non-Circular Microchannels," Energy and Power Engineering, Vol. 5 No. 9, 2013, pp. 577-586. doi: 10.4236/epe.2013.59063.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] S. Kandlikar, S. Garimella, D. Li, S. Colin and M. King, “Heat Transfer and Fluid Flow in Minichannels and Microchannels,” Elsevier, Amsterdam, 2006.
[2] E. Begg, D. Khrustalev and A. Faghri, “Complete Condensation of Forced Convection Two-Phase Flow in a Miniature Tube,” Journal of Heat Transfer, Vol. 121, No. 4, 1999, pp. 904-915.
[3] H. Louahlia-Gualous and M. Asbik, “Numerical Modeling of Annular Film Condensation inside a Miniature Tube,” Numerical Heat Transfer Part A: Applications, Vol. 52, No. 3, 2007, pp. 251-273.
[4] M. Miscevic, P. Lavieille and B. Piaud, “Numerical Study of Convective Flow with Condensation of a Pure Fluid in Capillary Regime,” International Journal of Heat and Mass Transfer, Vol. 52, No. 21-22, 2009, pp. 5130-5140.
[5] G. B. Ribeiro, J. R. Barbosa and A. T. Prata, “Performance of Microchannel Condensers with Metal Foams on the Air-Side: Application in Small-Scale Refrigeration Systems,” Applied Thermal Engineering, Vol. 36, 2012, pp. 152-160.
[6] G. El Achkar, P. Lavieille and M. Miscevic, “Loop Heat Pipe and Capillary Pumped Loop Design: About Heat Transfer in the Isolated Bubbles Zone of Condensers,” Applied Thermal Engineering, Vol. 33-34, 2012, pp. 253257.
[7] A. Odaymet, H. Louahlia-Gualous, “Experimental Study of Slug Flow for Condensation in a Single Square Microchannel,” Experimental Thermal and Fluid Science, Vol. 38, 2012, pp. 1-13.
[8] H. Louahlia-Gualous and B. Mecheri, “Unsteady Steam Condensation Flow Pattern inside a Miniature Tube,” Applied Thermal Engineering, Vol. 27, 2007, pp. 12251235.
[9] A. Odaymet and H. Louahlia-Gualous, “Experimental Study of Slug Flow for Condensation in a Single Square Microchannel,” Experimental Thermal and Fluid Science Vol. 38, 2012, pp. 1-13.
[10] X. J. Quan, P. Cheng and H. Y. Wu, “Transition from Annular Flow to Plug/Slug Flow in Condensation of Steam in Microchannels,” International Journal of Heat and Mass Transfer, Vol. 51, No. 3-4, 2008, pp. 707-716.
[11] T. S. Zhao and Q. Liao, “Theoretical Analysis of Film Condensation Heat Transfer inside Vertical Mini Triangular Channels,” International Journal of Heat and Mass Transfer, Vol. 45, 2002, pp. 2829-2842.
[12] H. Y. Wu and P. Cheng, “Condensation Flow Patterns in Silicon Microchannels,” International Journal of Heat and Mass Transfer, Vol. 48, No. 11, 2005, pp. 2186-2197.
[13] H. S. Wang, J. W. Rose and H. Honda, “A Theoretical Model of Film Condensation in Square Section Horizontal Microchannels,” Chemical Engineering Research and Design, Vol. 82, No. A4, 2004, pp. 430-434.
[14] H. S. Wang and J. W. Rose, “Theory of Heat Transfer during Condensation in Microchannels,” International Journal of Heat and Mass Transfer, Vol. 54, No. 11-12, 2011, pp. 2525-2534.
[15] A. Agarwal., “Heat Transfer and Pressure Drop during Condensation of Refrigerants in Microchannels,” Ph.D. Dissertation, Georgia Institute of Technology, 2006.
[16] J. Hu and C. Chao, “An Experimental Study of the Fluid Flow and Heat Transfer Characteristics in Micro-Condensers with Slug-Bubbly Flow,” International Journal of Refrigeration, Vol. 30, 2007, pp. 1309-1318.
[17] Y. Chen, M. Shi, P. Cheng and G. Peterson, “Condensation in Microchannels,” Nanoscale and Microscale Thermophysical Engineering, Vol. 12, 2008, pp. 1-27.
[18] Y. Chen, J. Wu, M. Shi and G. Peterson, “Numerical Simulation for Steady Annular Condensation Flow in Triangular Microchannels,” International Communications in Heat and Mass Transfer, Vol. 35, No. 7, 2008, pp. 805-809.
[19] M. M. Shah, “A General Correlation for Heat Transfer during Film Condensation Inside Pipes,” International Journal of Heat and Mass Transfer, Vol. 2, 1979, pp. 547-556.
[20] W. M .Kays and R. J. Moffat, “The Behavior of Transpired Turbulent Boundary Layers,” In: Studies in Convection: Theory, Measurement and Application, Academic Press, London, 1975.
[21] Y. Chen, X. Li, J. Wu and M. Shi, “One Dimensional Numerical Simulation for Steady Annular Condensation Flow in Rectangular Microchannels,” Heat Mass Transfer, Vol. 46, No. 1, 2009, pp. 75-82.
[22] M. K. Dobson, J. C. Chato, D. K. Hinde and S. P. Wang, “Experimental Evaluation of Internal Condensation of Refrigerants R-12 and R-134a,” Proceedings of the ASHRAE Winter Meeting, New Orleans, 23-26 January 1994, pp. 744-754.
[23] S. Koyama, K. Kuwahara and K. Nakashit, “Condensation of Refrigerant in a Multi-Port Channel,” First International Conference on Microchannels and Minichannels, Rochester, 24-25 April 2003, pp. 193-205.
[24] D. P. Traviss and W. M, Rohsenow, “Flow Regimes in Horizontal Two-Phase Flow with Condensation,” ASHRAE Transactions, Vol. 79, 1973, pp. 31-39.
[25] W. W. Akers, H. A. Deans and O. K. Crosser, “Condensation Heat Transfer within Horizontal Tubes,” Chemical Engineering Progress Symposium Series, Vol. 55, No. 29, 1959, pp. 171-176.
[26] W. W. Wang, T. D. Radcliff and R. N. A. Christensen, “Condensation Heat Transfer Correlation for MillimeterScale Tubing with Flow Regime Transition,” Experimental Thermal and Fluid Science., Vol. 26, No. 5, 2002, pp. 473-485.

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