Éitude d'une géométrie innovante pour le refroidissement de plaques de piles à combustible PEMFC

Abstract

Use of an embarked fuel cell, especially in a car, requires improving the cooling system efficiency. In such an application, one of the constraints is the low temperature (80 C) and the important heat power to dissipate. A solution is to extract the latent heat of a boiling fluid. Another solution is to use a single phase flow fluid for cooling the system. For these reasons, heat transfer coefficient and frictional pressure drop are experimentally investigated. Single phase flow and flow boiling configurations of HFE7100 are tested in a vertical mini-channels device. An innovative technology is proposed. This geometry well performs for single phase flow and has to be improved for two-phase flow. © AFM, EDP Sciences 2008.