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Title: Continuous nanofluids jet impingement heat transfer and flow in a micro-channel heat sink
Authors: Naphon P.
Nakharintr L.
Wiriyasart S.
Keywords: Drops
Fighter aircraft
Heat convection
Heat sinks
Heat transfer coefficients
Pressure drop
Titanium dioxide
Convective heat transfer
Enhancement of heat transfer
Experimental investigations
Heat Transfer enhancement
Heat transfer performance
Jet impingement
Micro channel heat sinks
Issue Date: 2018
Abstract: Experimental investigation on the TiO2 nanofluids jet impingement heat transfer and flow characteristics in the micro-channel heat sink are carried out. In the present study, three heat transfer enhancement techniques; micro-channel heat sink, jet impingement, and nanofluids are considered in which included the effect of relevant parameters of the nanofluids concentration, nozzle diameter, nozzle-to-heat sink distances, mass flow rate of nanofluids on the heat transfer performance of a micro-channel heat sink are considered. The obtained results showed that the suspending of nanoparticles in the base fluid remarkably increases the convective heat transfer by 18.56% at 0.015% nanofluids concentration. In addition, the obtained heat transfer coefficient tends to increase with increasing the nozzle diameter and decreasing nozzle level height. While the pressure drop across the test section increases as the nozzle diameter decreases and nozzle level height increases. However, the suspending of nanoparticles bring almost no extra addition of pressure drop as comparing with the base fluid. However, the obtained results point out that the proper selection of the relevant parameters to enhancement of heat transfer is important. © 2018 Elsevier Ltd
ISSN: 179310
Appears in Collections:Scopus 1983-2021

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