Flat-tubular solid oxide cell stack

摘要

Disclosed herein is a flat-tubular solid oxide cell stack. The cell stack includes a plurality of unit cells which are stacked one on top of another. Each unit cell includes a flat-tubular electrode support made of a porous conductive material. A first-gas flow channel is formed in the electrode support in a longitudinal direction thereof. First gas flows along the first-gas flow channel. A second-gas flow channel is formed on the outer surface of the electrode support. Second-gas flows along the second-gas flow channel. A connection hole is formed on each of opposite ends of the first-gas flow channel of each of the unit cells and communicates with the first-gas flow channel of the adjacent unit cell so that the first gas flows along the unit cells in a zigzag manner in the longitudinal directions of the unit cells.

主权项

1. A flat-tubular solid oxide cell stack, comprising:
a plurality of unit cells stacked one on top of another, each of the unit cells comprising a flat-tubular electrode support made of a porous conductive material, with at least one first-gas flow channel formed in the electrode support in a longitudinal direction thereof, first gas flowing along the first-gas flow channel, and at least one second-gas flow channel formed in an outer surface of the electrode support, second-gas flowing along the second-gas flow channel, wherein a connection hole is formed on each of opposite ends of the fast-gas flow channel of each of the unit cells and communicates with the first-gas flow channel of an adjacent unit cell, the unit cells being configured to direct the first-gas along one direction in the first-gas flow channel of one of the unit cells, then through the connection hole, and then along an opposite direction in the first-gas flow channel of the adjacent unit cell, so that the first gas flows through each tint-gas flow channel of the unit cells in a zigzag manner in the longitudinal direction of the unit cells, and a first-gas flow manifold connected to one end of the first-gas flow channel of each of uppermost and lowermost ones of the unit cells, the first-gas flow manifold being connected to one end of the first-gas flow channel of a middle flat tube unit cell situated in the middle of the stack so that the first gas diverges up and down from a medial portion of the cell stack and then flows along corresponding unit cells in zigzag manners in the longitudinal direction of the unit cells.