Thermal Analysis Of The Rib Edge Treatment In Interrupted Microchannel Heat Exchanger
Keywords:
Interrupted microchannel, rectangular rib, thermal performance, nanofluid, heat transfer enhancementAbstract
Solving the problem of effective heat dissipation is of importance in electronic systems and other portable systems. This is particularly important to maintain the system’s efficiency and to increase the durability of the system’s component parts. In this study, a three-dimensional interrupted microchannel is designed and modelled to study and verify the thermal performance of the microchannel heat sink for effective thermal management in a compact space. The performance of the microchannel heat sink is optimized by carrying out a three-dimensional edge treatment of different rib configurations to determine the best design that will improve the heat transfer capability of the heat sink. Nanofluids formulated from Al2O3 nanoparticle and water having different volume fraction is used as the working fluid. The influence of increasing the nanoparticle volume fraction and the Reynolds number on the performance of the heat sink was also studied. The Al2O3-water nanofluid showed improved thermal performance in the microchannel heat sink when compared with water. Increasing the Reynolds number increased both the heat transfer coefficient and the pressure drop within the system, however, the performance evaluation criteria showed that the increase in the heat transfer coefficient surpassed that of the pressure drop.
References
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Adio, S. A., Mehrabi, M., Sharifpur, M., & Meyer, J. P. Experimental investigation and model development for effective viscosity of MgO-ethylene glycol nanofluids by using dimensional analysis, FCM-ANFIS and GA-PNN techniques. International Communications in Heat and Mass Transfer, 72, 71–83, 2016.
Bahiraei, M., & Alighardashi, M. Investigating non-Newtonian nanofluid flow in a narrow annulus based on second law of thermodynamics. Journal of Molecular Liquids, 219, 117–127, 2016.
Bello-Ochende, T., Meyer, J. P., & Ighalo, F. U. Combined numerical optimization and constructal theory for the design of microchannel heat sinks. Numerical Heat Transfer; Part A: Applications, 58(11), 882–899, 2010.
Chai, L., & Wang, L. Thermal-hydraulic performance of interrupted microchannel heat sinks with different rib geometries in transverse microchambers. International Journal of Thermal Sciences, 127(January), 201–212, 2018.
Chai, L., Xia, G. D., & Wang, H. S. (a). Laminar flow and heat transfer characteristics of interrupted microchannel heat sink with ribs in the transverse microchambers. International Journal of Thermal Sciences, 110, 1–11, 2016.
Chai, L., Xia, G. D., & Wang, H. S. (b). Parametric study on thermal and hydraulic characteristics of laminar flow in microchannel heat sink with fan-shaped ribs on sidewalls - Part 2: Pressure drop. International Journal of Heat and Mass Transfer, 97, 1081–1090, 2016.
Chai, L., Xia, G., Zhou, M., Li, J., & Qi, J. Optimum thermal design of interrupted microchannel heat sink with rectangular ribs in the transverse microchambers. Applied Thermal Engineering, 51(1–2), 880–889, 2013.
Hamilton, R., & Crosser, O. Thermal conductivity of heterogeneous two-component systems. Industrial & Engineering Chemistry …, 1, 187–191, 1962.
Ijam, A., & Saidur, R. Nanofluid as a coolant for electronic devices (cooling of electronic devices). Applied Thermal Engineering, 32, 76–82, 2012.
Jang, S. P., & Choi, S. U. S. Effects of Various Parameters on Nanofluid Thermal Conductivity. 129(May 2007), 2013.
Jia, Y., Xia, G., Li, Y., Ma, D., & Cai, B. Heat transfer and fluid flow characteristics of combined microchannel with cone-shaped micro pin fins. International Communications in Heat and Mass Transfer, 92, 78–89, 2018.
Kumar, V., & Sarkar, J. Two-phase numerical simulation of hybrid nanofluid heat transfer in minichannel heat sink and experimental validation. International Communications in Heat and Mass Transfer, 91, 239–247, 2018.
Lee, P.-S., Garimella, S. V., & Liu, D. Investigation of heat transfer in rectangular microchannels. International Journal of Heat and Mass Transfer, 48(9), 1688–1704, 2005.
Naqiuddin, N. H., Saw, L. H., Yew, M. C., Yusof, F., Ng, T. C., & Yew, M. K. Overview of micro-channel design for high heat flux application. Renewable and Sustainable Energy Reviews, 82(June 2017), 901–914, 2018.
Qi, C., Hu, J., Liu, M., Guo, L., & Rao, Z. Experimental study on thermohydraulic performances of CPU cooled by nanofluids. Energy Conversion and Management, 153(July), 557–565, 2017.
Qu, W. and Mudawar, I. Experimental and numerical study of pressure drop and heat transfer in a single-phase micro-channel heat sink. International Journal of Heat and Mass Transfer, 45(12), 2549–2565, 2002.
Sarafraz, M. M., Arya, A., Hormozi, F., & Nikkhah, V. On the convective thermal performance of a CPU cooler working with liquid gallium and CuO/water nanofluid: A comparative study. Applied Thermal Engineering, 112, 1373–1381, 2017.
Sharifpur, M., Adio, S. A., & Meyer, J. P. Experimental investigation and model development for effective viscosity of Al2O3-glycerol nanofluids by using dimensional analysis and GMDH-NN methods. International Communications in Heat and Mass Transfer, 68, 2015.
Shi, X., Li, S., Wei, Y., & Gao, J. Numerical investigation of laminar convective heat transfer and pressure drop of water-based Al2O3nanofluids in a microchannel. International Communications in Heat and Mass Transfer, 90, 111–120, 2018.
Tuckerman, D. B., & Pease, R. F. W. High-Performance Heat Sinking for VLSI. (5), 126–129, 1981.
Xu, B., Ooti, K. T., Wong, N. T., & Choi, W. K. Experimental investigation of flow friction for liquid flow in microchannels. International Communications in Heat and Mass Transfer, 27(8), 1165–1176, 2000.
Xu, J. L., Gan, Y. H., Zhang, D. C., & Li, X. H. Microscale heat transfer enhancement using thermal boundary layer redeveloping concept. International Journal of Heat and Mass Transfer, 48(9), 1662–1674, 2005.
Zhai, Y., Xia, G., Li, Z., & Wang, H. Experimental investigation and empirical correlations of single and laminar convective heat transfer in microchannel heat sinks. Experimental Thermal and Fluid Science, 83, 207–214, 2017.
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Published
2019-11-01
How to Cite
Alo, T., & Adio, S. (2019). Thermal Analysis Of The Rib Edge Treatment In Interrupted Microchannel Heat Exchanger. Ife Journal of Technology, 26(1), 51–56. Retrieved from http://ijt.oauife.edu.ng/index.php/ijt/article/view/147
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