International Scientific Journal

Thermal Science - Online First

online first only

Numerical investigation on cooling rate in proton exchange membrane fuel cell using propylene glycol fluid

In this study, a cooling channel was constructed inside the fuel cell to examine the impact of cooling on proton exchange membrane (PEM) fuel cell performance. The performance of the fuel cell was assessed using four different coolant mixtures: DI100 (100 percent Deionized water), PG10 (90 percent DI water + 10% Propylene Glycol), PG20 (80 percent DI Water + 20% Propylene Glycol), and PG30 (70 percent DI Water + 30% Propylene Glycol). The efficiency of the fuel cell, system temperature, operating parameters, coolant, and cooling channel shape of the fuel cell were tested using a computational fluid dynamics model based on the finite volume approach. The test results showed that the fuel cell performance was good for both single-cell fuel cells and fuel cell stacks at temperatures of 354 k and 360 k, respectively. However, as the membrane became dehydrated above 362 k for single cell fuel cells and after 371 k for fuel cell stacks, performance of the fuel cell decreased and no appreciable improvement was seen. For single cells, the fuel cell showed good performance improvement at PG30 combinations, whereas the best performance in stacks was attained at PG20 combinations.
PAPER REVISED: 2022-11-10
PAPER ACCEPTED: 2022-12-17
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