In this research, cooling of polymer membrane fuel cells by nanofluids is numerically studied. Single-phase homogeneous technique is used to evaluate thermophysical properties of the water/Al2O3 nanofluid as a function of temperature and nanoparticle concentration. Four cooling plates together with four various fluids (with different nanoparticle concentrations) are considered for cooling fuel cells. The impact of geometry, Reynolds number, and concentration is investigated on some imperative parameters such as surface temperature uniformity and pressure drop. The results reveal that, among different cooling plates, the multipass serpentine flow field has the best performance. It is also proved that the use of nanofluid, in general, enhances the cooling process and significantly improves those parameters directly affecting the fuel cell performance and efficiency. By increasing the nanoparticle concentration by 0.006, the temperature uniformity index will decrease about 13%, the minimum and maximum temperature difference at the cooling plate surface will decrease about 13%, and the pressure drop will increase about 35%. Nanofluids can improve thermal characteristics of cooling systems and consequently enhance the efficiency and durability of fuel cells.
Effects of Cooling Passages and Nanofluid Coolant on Thermal Performance of Polymer Electrolyte Membrane Fuel Cells
Shahrood University of Technology,
Shahrood 3619995161, Iran
Faculty of Engineering,
University of Isfahan,
Isfahan 8174673441, Iran
Manuscript received July 20, 2018; final manuscript received November 24, 2018; published online January 22, 2019. Assoc. Editor: Bengt Sunden.
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Kordi, M., Moghadam, A. J., and Afshari, E. (January 22, 2019). "Effects of Cooling Passages and Nanofluid Coolant on Thermal Performance of Polymer Electrolyte Membrane Fuel Cells." ASME. J. Electrochem. En. Conv. Stor. August 2019; 16(3): 031001. https://doi.org/10.1115/1.4042254
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