Method to form smooth transition from start to running modes in fuel cell system; involves forming flow path from fuel processor to burner, which is opened when pressure exceeds air flow pressure

摘要

The method involves forming a flow path for a supply flow from a fuel processor (2) to a burner (34). The flow path is opened when the pressure in the flow path exceeds the air flow pressure. The delivery of hydrocarbon fuel to the burner is reduced according to the supply flow from the flow path, to retain a desired supply of heat from the burner and enable a relatively smooth transition from start to running modes. Independent claims are included for a method to operate a fuel cell system and for a method to operate a burner.