Irnie Zakaria and W. A. N. W Mohamed and W. H. Azmi
Thermal Analysis on Heat Transfer Enhancement and Fluid Flow for Al2O3 WaterEthylene Glycol Nanofluid in Single PEMFC Mini Channel
1661 - 1666
2015
9
9
International Journal of Aerospace and Mechanical Engineering
https://publications.waset.org/pdf/10002578
https://publications.waset.org/vol/105
World Academy of Science, Engineering and Technology
Thermal enhancement of a single mini channel in
Proton Exchange Membrane Fuel Cell (PEMFC) cooling plate is
numerically investigated. In this study, low concentration of Al2O3 in
Water Ethylene Glycol mixtures is used as coolant in single channel
of carbon graphite plate to mimic the mini channels in PEMFC
cooling plate. A steady and incompressible flow with constant heat
flux is assumed in the channel of 1mm x 5mm x 100mm. Nano
particle of Al2O3 used ranges from 0.1, 0.3 and 0.5 vol
concentration and then dispersed in 6040 (water Ethylene Glycol)
mixture. The effect of different flow rates to fluid flow and heat
transfer enhancement in Re number range of 20 to 140 was observed.
The result showed that heat transfer coefficient was improved by
18.11, 9.86 and 5.37 for 0.5, 0.3 and 0.1 vol. Al2O3 in 6040
(water EG) as compared to base fluid of 6040 (water EG). It is also
showed that the higher vol. concentration of Al2O3 performed
better in term of thermal enhancement but at the expense of higher
pumping power required due to increase in pressure drop
experienced. Maximum additional pumping power of 0.0012W was
required for 0.5 vol Al2O3 in 6040 (water EG) at Re number 140.
Open Science Index 105, 2015