FUEL CELL SYSTEM

摘要

A fuel cell system that is simple and in which the amount of consumption of fuel gas at the time of the completion of operation can be reduced. A fuel cell system (1) has supply piping (22) from a fuel gas supply source (21), where fuel gas is stored, to a gas inlet (2a) of a fuel cell (2) and has circulation piping (23) from a gas outlet (2b) of the fuel cell (2) to a joining point (A) at which the circulation piping (23) joins the supply piping (22). On the upstream side of the joining point (A) of the supply piping (22) are a pressure regulation valve (42) and a shut-off valve (43). The downstream side of the joining point (A) of the supply piping (22) and the circulation piping (23) are always communicated.