Thermal Analysis of Heat Transfer Enhancement and Fluid Flow for Low Concentration of Al2O3 Water - Ethylene Glycol Mixture Nanofluid in a Single PEMFC Cooling Plate. (November 2015)

• Record Type: Journal Article
• Authors: Zakaria, Irnie; Mohamed, W.A.N.W.; Mamat, A.M.I Bin; Saidur, R.; Azmi, W.H.; Mamat, Rizalman; Sainan, K.I.; Ismail, H.
• Is Part Of: Energy procedia. Volume 79(2015)
• Page Start: 259
• Page End: 264
• Publication Date: 2015-11
• Subjects: mini channel -- nanofluid -- heat transfer -- PEMFC -- fluent; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.11.475
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: Numerical analysis of thermal enhancement for a single Proton Exchange Membrane Fuel Cell (PEMFC) cooling plate is presented in this paper. A low concentration of Al2O3 in Water - Ethylene Glycol mixtures was used as coolant in 220 mm x 300 mm cooling plate with 22 parallel mini channels of 1 x 5 x 100 mm. This cooling plate mimicked conventional PEMFC cooling plate as it was made of carbon graphite. Large header was added to have an even velocity distribution across all Re number studied. The cooling plate was subjected to a constant heat flux of 100W that represented the artificial heat load of a single cell. Al2 O3 nano particle volume % concentration of 0.1 and 0.5 vol was dispersed in 50:50 (water: Ethylene Glycol) mixtures. The effect of different flow rates to heat transfer enhancement and fluid flow in Re range of 30 to 150 were observed. The result showed that thermal performance has improved by 7.3 and 4.6% for 0.5 and 0.1 vol % Al2 O3 consecutively in 50:50 (water:EG) as compared to base fluid of 50:50 (water:EG). It is shown that the higher vol % concentration of Al2 O3 the better the heat transfer enhancement but at the expense of higher pumping power required as much as 0.04W due to increase in pressure drop. The positive thermal results implied that Al2 O3 nanofluid is a potential candidate for future applications in PEM fuel cell thermal management