Enhanced heat transport behavior of micro channel heat sink with graphene based nanofluids. (October 2020)

• Record Type: Journal Article
• Authors: Balaji, T.; Selvam, C.; Lal, D. Mohan; Harish, Sivasankaran
• Is Part Of: International communications in heat and mass transfer. Volume 117(2020:Oct.)
• Publication Date: 2020-10
• Subjects: Functionalized graphene nanoplatelets -- Electronics cooling -- Deionised water -- Heat transfer coefficient -- Nanofluids -- Micro channel heat sink; GnP Graphene Nano Platelets -- SEM Scanning Electron Microscope -- f-GnP Functionalized Graphene Nano Platelets -- CHTC Convective Heat Transfer Coefficient -- DI water De-ionised water -- EG Ethylene Glycol; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Heat -- Transmission; Mass transfer; Periodicals; 621.4022
• DOI: 10.1016/j.icheatmasstransfer.2020.104716
• Languages: English
• ISSNs: 0735-1933

Abstract

Abstract: This paper investigates the convective heat transfer characteristics of f-GnP (functionalized Graphene Nanoplatelets) suspended in distilled water. The effect of mass flow rate (5 g/s to 30 g/s) and the GnP concentration (0 vol% to 0.2 vol%) on various heat transport parameters such as convective heat transfer coefficient, temperature drop, Nusselt Number, Pressure drop have been discussed in this study. Experiments with GnP based nanofluids in the heat sink decreases the heat sink temperature by 10 °C and enhances the convective heat transfer coefficient and Nusselt number by 71% and 60% with a little increment in the pressure drop of about 12% higher as compared with water. The results prove that the functionalized GnP based nanofluids would effectively replace the existing nanofluids that improves the performance of the electronic chips due to enhanced thermal conductivity and convective heat transfer coefficient. Highlights: Functionalized graphene/water nanofluid was prepared and characterized. Thermal conductivity of nanofluid increased by ~11% at 0.2 vol% of GnP. Heat transfer coefficient and pressure drop of GnP/water nanofluid are reported. Heat transfer coefficient enhanced by ~71% with 0.2 vol% of GnP. The increase in pressure drop was significantly limited with 0.2 vol% of GnP.