Channel Blockage and Flow Maldistribution during Unsteady Flow in a Model Microchannel Plate heat Exchanger - Publication - Bridge of Knowledge


Channel Blockage and Flow Maldistribution during Unsteady Flow in a Model Microchannel Plate heat Exchanger


This paper describes the problem of channel blockage as a result of flow maldistribution between the channels of a model mini channel plate heat exchanger consisting of one pass on each leg. Each leg of the heat exchanger contains 51 parallel and rectangular minichannels of four hydraulic diameters namely 461 μm, 571 μm, 750 μm and 823 μm. In addition, a more complex geometry has been investigated where for the sake of breaking the development length the inclined transverse cuts have been incorporated. The moment of liquid phase transition through the exchanger (the working medium: water) was recorded for the mass fluxes ranging from 18.67 to 277.76 kg/m2s in 51 parallel channels with the use of a fast speed camera. The Reynolds numbers Re in the individual channels were from 10.76 to 90.04. The relationship between the mass flux and the size of the minichannels in the presence of the maldistribution is discussed here. The existence of the threshold in the mass flux below which the phenomenon occurs has been shown. Two mechanisms of channel blocking have been recorded and described in detail. A miniscale variation of one of them containing the extended geometry was created as well.


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Journal of Applied Fluid Mechanics no. 12, pages 1023 - 1035,
ISSN: 1735-3572
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Bibliographic description:
Dąbrowski P., Klugmann M., Mikielewicz D.: Channel Blockage and Flow Maldistribution during Unsteady Flow in a Model Microchannel Plate heat Exchanger// Journal of Applied Fluid Mechanics. -Vol. 12, iss. 4 (2019), s.1023-1035
Digital Object Identifier (open in new tab) 10.29252/jafm.12.04.29316
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  1. Amador, C., A. Gavriilidis and P. Angeli (2004). Flow Distribution in Different Microreactor Scale-out Geometries and the Effect of Manufacturing Tolerances and Channel Blockage. Chemical Engineering Journal 101(1-3), 379-90. open in new tab
  2. Anbumeenakshi, C. and M. R. Thansekhar (2016). Experimental Investigation of Header Shape and Inlet Configuration on Flow Maldistribution in Microchannel. Experimental Thermal and Fluid Science 75, 156-61. open in new tab
  3. Bahiraei, M. and S. Heshmatian. (2017). Application of a Novel Biological Nanofluid in a Liquid Block Heat Sink for Cooling of an Electronic Processor: Thermal Performance and Irreversibility Considerations. Energy Conversion and Management 149, 155-67. open in new tab
  4. Bejan, A. and M. R. Errera. (1997). Deterministic Tree Networks for Fluid Flow: Geometry for Minimal Flow Resistance Between a Volume and One Point. Fractals 5(4), 685-95. open in new tab
  5. Berthier, J., K. A. Brakke, E. P. Furlani, I. H. Karampelas, V. Poher, D. Gosselin, M. Cubizolles and P. Pouteau. (2015). Whole Blood Spontaneous Capillary Flow in Narrow V-Groove Microchannels. Sensors and Actuators, B: Chemical 206, 258-67. open in new tab
  6. Brutin, D., V. S. Ajaev and L. Tadrist (2013). Pressure Drop and Void Fraction during Flow Boiling in Rectangular Minichannels in Weightlessness. Applied Thermal Engineering 51(1-2), 1317-27. open in new tab
  7. García-Cascales, J. R., F. Illán-Gómez, F. Hidalgo- Mompeán, F. A. Ramírez-Rivera and M. A. Ramírez-Basalo (2017). Performance Comparison of an Air/Water Heat Pump Using a Minichannel Coil as Evaporator in Replacement of a Fin-and-Tube Heat Exchanger. International Journal of Refrigeration 74, 558-73. open in new tab
  8. Hall, D., and I. Mudawar. (1999). Ultra-High Critical Heat Flux (CHF) for Subcooled Water Flow Boiling?II: High-CHF Database and Design Equations. International Journal of Heat and Mass Transfer 42(8), 1429-56. open in new tab
  9. Illán-Gómez, F., J. R. García-Cascales, F. Hidalgo- Mompeán and A. López-Belchí (2017). open in new tab
  10. Experimental Assessment of the Replacement of a Conventional Fin-and-Tube Condenser by a Minichannel Heat Exchanger in an Air/Water Chiller for Residential Air Conditioning. Energy and Buildings 144, 104-16. open in new tab
  11. Jajja, S. A., W. Ali, H. M. Ali and A. M. Ali. (2014). Water Cooled Minichannel Heat Sinks for Microprocessor Cooling: Effect of Fin Spacing. Applied Thermal Engineering 64(1-2), 76-82. open in new tab
  12. Kandlikar, S. G. (2005). High Flux Heat Removal with Microchannels-A Roadmap of Challenges and Opportunities. Heat Transfer Engineering 26(8), 5-14. open in new tab
  13. Kandlikar, S. G., and W. J. Grande. (2003). Evolution of Microchannel Flow Passages-- Thermohydraulic Performance and Fabrication Technology. Heat Transfer Engineering 24(1), 3-17. open in new tab
  14. Kumar, R., G. Singh, and D. Mikielewicz. (2017). A New Approach for the Mitigating of Flow Maldistribution in Parallel Microchannel Heat Sink. Journal of Heat Transfer (c). open in new tab
  15. Kumaraguruparan, G., R. Manikanda Kumaran, T. Sornakumar and T. Sundararajan. (2011). A Numerical and Experimental Investigation of Flow Maldistribution in a Micro-Channel Heat Sink. International Communications in Heat and Mass Transfer 38(10), 1349-53. open in new tab
  16. Siva, M. V., A. Pattamatta and S. K. Das. (2014). Effect of Flow Maldistribution on the Thermal Performance of Parallel Microchannel Cooling Systems. International Journal of Heat and Mass Transfer 73, 424-28.
  17. Mehendale, S. S., A. M. Jacobi and R. K. Shah (2000). Fluid Flow and Heat Transfer at Micro- and Meso-Scales With Application to Heat Exchanger Design. Applied Mechanics Reviews 53(7), 175-93. open in new tab
  18. Mikielewicz, D. and J. Wajs (2017). Possibilities of Heat Transfer Augmentation in Heat Exchangers with Minichannels for Marine Applications. Polish Maritime Research 24(s1), 133-40. open in new tab
  19. Mikielewicz, D. and J. Mikielewicz. (2010). A Thermodynamic Criterion for Selection of Working Fluid for Subcritical and Supercritical Domestic Micro CHP. Applied Thermal Engineering 30(16), 2357-62. open in new tab
  20. Mikielewicz, D., M. Klugmann and J. Wajs (2012). Experimental Investigation of M-Shape Heat Transfer Coefficient Distribution of R123 Flow Boiling in Small-Diameter Tubes. Heat Transfer Engineering 33(7), 584-95. open in new tab
  21. Minqiang, P., Z. Dehuai, T. Yong and C. Dongqing (2009). CFD-Based Study of Velocity Distribution among Multiple Parallel Microchannels. Journal of Computers 4(11), 1133-38.
  22. Moffat, R. J. (1988). Describing the Uncertainties in Experimental Results. Experimental Thermal and Fluid Science 1(1), 3-17. open in new tab
  23. Mu, Y. T., L. Chen, Y. Ling He, and W. Quan Tao. (2015). Numerical Study on Temperature Uniformity in a Novel Mini-Channel Heat Sink with Different Flow Field Configurations. International Journal of Heat and Mass Transfer 85, 147-57. open in new tab
  24. Mueller, A. C. and J. P. Chiou. (1988). Review of Various Types of Flow Maldistribution in Heat Exchangers. Heat Transfer Engineering 9(2), 36-50. open in new tab
  25. Nacke, R., B. Northcutt, and I. Mudawar. (2011). Theory and Experimental Validation of Cross- Flow Micro-Channel Heat Exchanger Module with Reference to High Mach Aircraft Gas Turbine Engines. International Journal of Heat and Mass Transfer 54(5-6), 1224-35. open in new tab
  26. Najim, M., and M. Barek Feddaoui. (2018). New Cooling Approach Using Successive Evaporation and Condensation of a Liquid Film inside a Vertical Mini-Channel. International Journal of Heat and Mass Transfer 122, 895- 912. open in new tab
  27. Ornatskii, A. P. and L. S. Vinyarskii (1965). Heat Transfer Crisis in a Forced Flow of Underheated Water in Small-Bore Tubes.
  28. Teplofizika Vysokikh Temperatur 3(1965): 441- 51. open in new tab
  29. Ramos-Alvarado, B., Bo F. and G. P. Peterson. (2013). Comparison and Optimization of Single-Phase Liquid Cooling Devices for the Heat Dissipation of High-Power LED Arrays. Applied Thermal Engineering 59(1-2): 648-59. open in new tab
  30. Ran, J., L. Li, X. Du, R. Wang, W. Pan and W. Tang (2015). open in new tab
  31. Robles, A., V. Doung, A. J. Martin, J. L. Guadarrama and G. Diaz (2014). Aluminum Minichannel Solar Water Heater Performance under Year- Round Weather Conditions. Solar Energy 110, 356-64. open in new tab
  32. Sakamatapan, K. and S. Wongwises. (2014). Pressure Drop during Condensation of R134a Flowing inside a Multiport Minichannel. International Journal of Heat and Mass Transfer 75, 31-39. open in new tab
  33. Sturgis, J. C. and I. Mudawar (1999). Assessment of CHF Enhancement Mechanisms in a Curved, Rectangular Channel Subjected to Concave Heating. Journal of Heat Transfer 121(2), 394- 404. open in new tab
  34. Teng, J. (2012). Fluid Dynamics in Microchannels. Intechopen 403-36. open in new tab
  35. Tuo H., Hrnjak P. (2013). Effect of the header pressure drop induced flow maldistribution on the microchannel evaporator performance. International Journal of Refrigeration 36(8), 2176-2186. open in new tab
  36. Tuckerman, D. B. and R. F. W. Pease (1981). High- Performance Heat Sinking for VLSI. IEEE Electron Device Letters 2(5), 126-29. open in new tab
  37. Wajs, J., D. Mikielewicz and E. Fornalik-Wajs (2016). Thermal Performance of a Prototype Plate Heat Exchanger with Minichannels under Boiling Conditions. Journal of Physics: Conference Series 745, 032063. open in new tab
  38. Wang, J. (2011). Theory of Flow Distribution in Manifolds. Chemical Engineering Journal 168(3), 1331-45. open in new tab
  39. Wen, J., and Y. Li. (2004). Study of Flow Distribution and Its Improvement on the Header of Plate-Fin Heat Exchanger. Cryogenics 44(11), 823-31. open in new tab
  40. Zhou, J., X. Zhao, X. Ma, Z. Du, Y. Fan, Y. Cheng and X. Zhang (2017). Clear-Days Operational Performance of a Hybrid Experimental Space Heating System Employing the Novel Mini- Channel Solar Thermal & PV/T Panels and a Heat Pump. Solar Energy 155, 464-77. open in new tab
  41. Zhou, P., D. Tarlet, M. Wei, Y. Fan and L. Luo (2017). Novel Multi-Scale Parallel Mini- Channel Contactor for Monodisperse Water-in- Oil Emulsification. Chemical Engineering Research and Design 121, 233-44. open in new tab
  42. Zhou, W., W. Deng, L. Lu, J. Zhang, L. Qin, S. Ma and Y. Tang (2014). Laser Micro-Milling of Microchannel on Copper Sheet as Catalyst Support Used in Microreactor for Hydrogen Production. International Journal of Hydrogen Energy 39(10), 4884-94. open in new tab
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Gdańsk University of Technology

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