For a 11 W PEM fuel cell, the exergy analysis at different channel geometry and internal parameters such as temperature, pressure and mass flow rate is investigated experimentally. The geometry of the cell is rectangular, elliptical and triangular. A PEM fuel cell with active area and Nafion 117 membrane with 4mg Pt for the anode and cathode is employed as a membrane electrode assembly. The results show that when the geometry of the cell is rectangular, the irreversibility of the cell is at lower value and the exergy efficiency is at higher value. Also the results show that with the increase of hydrogen, oxygen and cell temperature, the exergy efficiencies of the cell increase and irreversibilities decrease.
کلید واژگان :Fuel cell, channel geometry, Irreversibility, Exergy efficiency, operating parameters
ارزش ریالی : 600000 ریال
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