Universal Journal of Mechanical Engineering Vol. 8(2), pp. 84 - 91
DOI: 10.13189/ujme.2020.080202
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Thermal and Hydrodynamic Characteristics of Graphite-H₂O and CuO-H₂O Nanofluids in Microchannel Heat Sinks

Mohammed Abdulqader Sulaiman , Ahmed Mohammed Adham ^*, Sirwan Farooq Omar
Department of Mechanical and Energy Engineering, Erbil Technical Engineering College, Erbil Polytechnic University, Iraq

ABSTRACT

In this study, nanofluids were used as coolant for high-heat dissipation electronic devices with nanoparticle volume concentrations from 1% to 5%. The results were compared to other conventional cooling systems. Graphite-H₂O and CuO-H₂O nanofluids were analyzed at inlet velocities of 0.1 m/s and 1.5 m/s in a rectangular copper shaped microchannel heat sink MCHS with a bottom size of 20mm×20mm. The results indicate that suspended nanoparticles significantly increase thermal conductivity, heat flux, pumping power, and pressure drop. For graphite-water and CuO-water nanofluids at 0.1m/s with 5.0% volume, the greatest percentage increase in thermal conductivity was 15.52% and 14.34%, respectively. Graphite-water at 0.1 m/s and 1.5 m/s with 5% volume fraction had a maximum heat flux of 18% and 3.46%, respectively. CuO-water at 0.1 m/s and 1.5 m/s inlet velocity with the same volume concentrations had a heat flux of 17.83% and 3.33%, respectively. For graphite-H₂O and CuO-H₂O at 0.1 m/s with 5% volume fraction, pumping power and pressure drop were 0.000695 W and 92.63 Pa, respectively. For inlet velocity of 1.5 m/s with same volume concentration were 0.156306 W and 1389.39 Pa, respectively.

KEYWORDS
Heat Flux, Minichannel Heat Sink, Nanofluid, Pumping Power, Thermal Conductivity

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Mohammed Abdulqader Sulaiman , Ahmed Mohammed Adham , Sirwan Farooq Omar , "Thermal and Hydrodynamic Characteristics of Graphite-H₂O and CuO-H₂O Nanofluids in Microchannel Heat Sinks," Universal Journal of Mechanical Engineering, Vol. 8, No. 2, pp. 84 - 91, 2020. DOI: 10.13189/ujme.2020.080202.

(b). APA Format:
Mohammed Abdulqader Sulaiman , Ahmed Mohammed Adham , Sirwan Farooq Omar (2020). Thermal and Hydrodynamic Characteristics of Graphite-H₂O and CuO-H₂O Nanofluids in Microchannel Heat Sinks. Universal Journal of Mechanical Engineering, 8(2), 84 - 91. DOI: 10.13189/ujme.2020.080202.