A complete Dusty-Gas Model for the H2–H2O mixture in the anode transport layer of the anode-supported SOFC is considered. An exact conservation law relating the total pressure and the hydrogen molar fraction at any point in the anode to their values in the anode channel is derived. Using this conservation law, approximate analytical solutions for the hydrogen molar fraction and total pressure in the anode transport layer are obtained. Possible appliucations of the solutions are discussed. A condition for neglecting the pressure gradient is derived.
Andrei Kulikovsky (Wed,) studied this question.