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Experimental Investigation of Thermal Performance of Microchannel Heat Sink with Nanofluids Al2O3/Water and SiO2/Water

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Abstract

The result of experimental investigation of the influence of nanofluids on the enhancement of heat transfer in a microchannel heat sink is presented in the paper. The microchannel heat sink has 25 numbers of rectangular microchannels of 0.42 mm width, 4.2 mm depth and 100 mm length. Nanofluids of Al2O3/water and SiO2/water with volume concentration of 0.1% and 0.25% and deionized water were used as heat transfer fluids. The nanofluid and its volume concentration are found to affect the heat transfer. Significant heat transfer enhancement of the microchannel is observed with the nanofluids when compared to deionized water. Nanofluid Al2O3/water exhibits better heat transfer performance than SiO2/water due to the higher thermal conductivity of Al2O3/water. Nanofluids with higher volume concentration show better heat transfer enhancement. The additional pressure drop caused by the nanofluids is not so high.

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Acknowledgements

The authors would like to thank the Management, Principal, and QC-ARD of K.L.N. College of Engineering, Madurai, India for the financial and administrative support to carry out the research work.

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  1. Department of Mechanical Engineering, K.L.N College of Engineering, Madurai, Tamilnadu, 630612, India

    M. R. Thansekhar & C. Anbumeenakshi

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  1. M. R. Thansekhar
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  2. C. Anbumeenakshi
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Correspondence to M. R. Thansekhar.

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Thansekhar, M.R., Anbumeenakshi, C. Experimental Investigation of Thermal Performance of Microchannel Heat Sink with Nanofluids Al2O3/Water and SiO2/Water. Exp Tech 41, 399–406 (2017). https://doi.org/10.1007/s40799-017-0189-y

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  • DOI: https://doi.org/10.1007/s40799-017-0189-y

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