A REVIEW OF MINIATURE CHANNELS AND NANOFLUIDS TECHNOLOGIES USED AS HEAT TRANSFER ENHANCEMENT TECHNIQUES FOR MICROCOOLING SYSTEMS | ||||
| Journal of Al-Azhar University Engineering Sector | ||||
| Volume 19, Issue 72, July 2024, Page 185-211 PDF (1.01 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/auej.2024.265603.1601 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mohamed S. Elsherbiny   1; Mostafa Ali2; Moatsem Shahin 3; Mahmoud El-Kady2
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| 1Renewable Energy Department, Faculty of Energy and Environmental Engineering, British University in Egypt, Cairo, Egypt | ||||
| 2Mechanical Engineering Department, Faculty of Engineering, Al-Azhar University, Nasr City, Cairo, Egypt | ||||
| 3Mechanical Engineering Department, Faculty of Engineering, Badr University in Cairo, Cairo, Egypt | ||||
| Abstract | ||||
| The synergy between nanofluids and microchannels has become a cornerstone in addressing the escalating thermal challenges across diverse industries, as this symbiotic relationship can meet stringent thermal demands. The objective of the current review is to provide a general and recent overview of all aspects, enhancement techniques, and variables related to miniature channels aligned with utilizing nanofluids from a liquid convection perspective, categorizing variables, and focusing on unique and recent methods used from experimental and numerical perspectives. Consequently, the main elements are simplified into the coolant, heat sink, and operating conditions; besides, their interactions are pivotal because there is no absolute answer for which specific combination of techniques leads to the highest enhancement; however, more complex geometries, sharp edges, and dynamic flow were preferred. Experimental and numerical findings are not identical; besides, the availability of experimental contributions is much lower, which increases the barrier to knowing the enhancement mechanisms and the phenomena behind them. Hybrid nanofluids do not always have a beneficial effect; besides, increasing Re number or particle concentration in HYNF as well; however, higher heat loads are preferred when utilizing nanofluids in MCHS. Increasing the level of hybridization showed a higher enhancement value; however, it was not tested through miniature channels. The manipulation of micro concentrations, hybridization ratios, higher levels of hybridization, porous heat sinks, bionic configurations, organic nanofluids, nanophase change materials, new modeling techniques like ANN, GA, and LBM, and carbon-based heat sinks despite the fabrication barrier are all recommended. Special Issue of AEIC 2024 (Mechanical & Chemical and Material Engineering Session) | ||||
| Keywords | ||||
| Numerical and Experimental Review; Microchannel Heat Sinks; Nanofluids; Hybrid nanofluids; Forced Convection Liquid Cooling | ||||
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