RESERVOIR FOR HOT WEATHER OPERATION OF EVAPORATIVELY COOLED FUEL CELL

摘要

A fuel cell system includes a fuel cell having a cathode and an anode. A water flow field is in communication with the cathode for producing moist air. A cooling system for an evaporatively cooled fuel cell includes a condenser arranged to receive the moist air and produce condensed water. A separator may be arranged to receive the condensed water. A return line fluidly connects the separator and the water flow field. A reservoir has additional water that is in fluid communication with the return line for selectively providing the additional water to the water flow field in an out-of-balance hot fuel cell condition. The reservoir is connected in and to the cooling system in a manner that does not block water flow if the reservoir freezes.