FUEL CELLS ON THE NASA SPACE SHUTTLE ORBITER ... control unit Hoogers 181. Fuel Cell Reactants Fuel cells typically contain expensive metal catalysts. The function of the catalysts ... (3594 Words -- Approx. 14 Pages)
ALTERNATIVE FUEL SOURCES ... When the reactants enter the fuel cells, they flow through a preheater that raise their temperature to a minimum of 4.50 C from cryogenic temperature levels. ... (4160 Words -- Approx. 17 Pages)