HumidityandtemperaturehaveanessentialinﬂuenceonPEMfuelcellsystemperformance. Thewatercontentwithinthepolymericmembraneisimportantforenhancingprotonconductionand achievinghighefﬁciencyofthesystem. Thecombinationofnon-stationaryoperationrequestsandthe variabilityofenvironmentconditionsposesanimportantchallengetomaintainingoptimalmembrane hydration. Thispaperpresentsahumidiﬁcationandthermalcontrolsystem,topreventthemembrane from drying. The main characteristics of such a device are small size and weight, compactness and robustness, easy implementation on commercial fuel cell, and low power consumption. In particular, the NTHS method was studied in a theoretical approach, tested and optimized in a laboratory and ﬁnally applied to a PEMFC of 1 kW that supplied energy for the prototype vehicle IDRA at the Shell Eco-Marathon competition. Using a speciﬁc electronic board, which controls several variables and decides the optimal reaction air ﬂow rate, the NTHS was managed. Furthermore, the effects of membrane drying and electrode ﬂooding were presented.
|Titolo:||Nafion tubing humidification system for polymer electrolyte membrane fuel cells|
|Data di pubblicazione:||2019|
|Digital Object Identifier (DOI):||10.3390/en12091773|
|Appare nelle tipologie:||1.1 Articolo in rivista|