Hitachi Zosen Corporation

Kotaro Yagi

Takashi Ogawa

Daisuke Hashimoto

Yoshinobu Takaki

Kazuki Wakamiya

Kyohei Izuma

Masato Kawami

Yasuhide Okazaki

Masao Oku

Naohiro Nakataya

A fuel cell system includes a reformer, fuel cell stacks, and an exhaust-gas combustor. The reformer has a tubular shape extending in an axial direction and reforms raw fuel into combustion gas. The fuel cell stacks generate electric power from the fuel gas and oxidant gas. The fuel cell stacks are arranged radially outward of the reformer in a circumferential direction to face the reformer in a radial direction. The exhaust-gas combustor burns fuel gas that is not used and included in exhaust gas from the fuel cell stacks. The exhaust-gas combustor is arranged radially inward of the reformer to face the reformer in the radial direction. Each fuel cell stack includes flat plate type cells stacked in the radial direction. This achieves downsizing of the fuel cell system.

Fuel cell system

A fuel cell system includes a reformer and a plurality of fuel cells of solid oxide. The reformer reforms raw fuel to generate fuel gas. The plurality of fuel cells generates electric power by using the fuel gas and oxidant gas. The plurality of fuel cells is arranged in the up-down direction and the right-left direction. The reformer has a cell facing face that faces any of the plurality of fuel cells in the back-and-forth direction. This configuration improves temperature uniformity among the plurality of fuel cells, and as a result, suppresses or prevents a decrease in the power generation efficiency of the fuel cell system.

Growing community of inventors

Osaka, Japan

Kotaro Yagi