Issue |
MATEC Web Conf.
Volume 240, 2018
XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018)
|
|
---|---|---|
Article Number | 03001 | |
Number of page(s) | 3 | |
Section | Fluid Mechanics and Nanofluids | |
DOI | https://doi.org/10.1051/matecconf/201824003001 | |
Published online | 27 November 2018 |
Do ionic liquids replace water or nanofluids to enhance heat transfer in micro-channel systems?
a
School of Mechanical Engineering, University of Leeds, UK
b
Refrigeration Department, Eng. Division, Basra Oil Company, Ministry of Oil, Basra, Iraq
* Correspondence author: Email: mushtaq@boc.oil.gov.iq (M. T. Al-Asadi), ml13wtia@leeds.ac.uk (W. T. Al-Sallami)
This study explores the influence of different fluids in a uniform micro-channel geometry on conjugate heat transfer. Nanofluids used here, are SiO2 and Al2O3 nanoparticles with various concentrations up to 4% in water as a base fluid under laminar flow. Nanofluids are compared to an ionic liquid called Butyl Methyl Imidazolium Tetrafluroborate (BMIM BF4) to examine the influence of heat transfer and fluid flow characteristics. Good agreement was found against previous micro-channel studies, numerical simulations with COMSOL Multiphysics® V5.2a are used at Reynolds number ranging from 50 to1000 with a uniform heat flux of 100 W/cm2 relevent to cooling systems. Advanced fluids might offer significant potential in combatting the challenges of heat transfer in the technological drive toward lower weight/smaller volume electrical and electronic devices. The results show that the lowest thermal resistance is for nanofluids followed by water, then the ionic liquid. Moreover, Al2O3-water offers lower thermal resistance than the SiO2-water for all given nanoparticle concentrations. It is also found that there is no beneficial using ionic liquids in forced convection systems which work below boiling temperature conditions.
© The Authors, published by EDP Sciences, 2018
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.