Leaking manifold seal

摘要

A fuel cell stack has external reactant gas manifolds pressed against its sides with seal material disposed between the sides of the stack and each manifold. The stack is disposed within a pressure vessel. An inert gas is fed into the pressure vessel at a pressure slightly above the pressure of the reactant gases within the stack. The inert gas continuously leaks into the reactant gas manifolds past the seal material, thereby preventing leakage out of the manifolds.