Baek, Seung Man Yu, Seung Ho Nam, Jin Hyun Kim, Charn-Jung 2024-01-20T17:01:27Z 2024-01-20T17:01:27Z 2021-09-05 2011-06 1359-4311 https://pubs.kist.re.kr/handle/201004/130294 A uniform temperature distribution is important to obtain better control and higher performance of polymer electrolyte membrane fuel cells (PEMFCs). In PEMFCs, more than half of the chemical energy of hydrogen is converted into heat during the electrochemical general:ion of electricity. If not being properly exhausted, this reaction heat overheats the PEMFCs and thus impairs their performance and durability. In general, large-scale PEMFCs are cooled by liquid water that circulates through coolant flow channels in bipolar plates or in dedicated cooling plates. In this study, detailed fluid flow and heat transfer in large-scale cooling plates with 13 cm x 18 cm square area was simulated using a commercial computational fluid dynamics (CFD) code. Based on the CFD simulations, the Performances of six different coolant flow field designs were assessed in terms of the maximum temperature, temperature uniformity, and pressure drop characteristics. The results demonstrated that multi-pass serpentine flow field (MPSFF) designs could significantly improve the uniformity of temperature distribution in a cooling plate compared with the conventional serpentine flow field designs, while maintaining the coolant pressure drop similar. (c) 2011 Elsevier Ltd. All rights reserved. English PERGAMON-ELSEVIER SCIENCE LTD THERMAL MANAGEMENT ISSUES FUEL-CELLS PLATES PERFORMANCE A numerical study on uniform cooling of large-scale PEMFCs with different coolant flow field designs Article 10.1016/j.applthermaleng.2011.01.009 1 APPLIED THERMAL ENGINEERING, v.31, no.8-9, pp.1427 - 1434 APPLIED THERMAL ENGINEERING 31 8-9 1427 1434 scie scopus 000289385900008 2-s2.0-79952536479 Thermodynamics Energy & Fuels Engineering, Mechanical Mechanics Thermodynamics Energy & Fuels Engineering Mechanics Article THERMAL MANAGEMENT ISSUES FUEL-CELLS PLATES PERFORMANCE Polymer electrolyte membrane fuel cells Cooling plate Flow field design Temperature uniformity Parallel Serpentine flow field Multi-pass serpentine flow field