NOVELTY - The module (12) has a heat exchanger (50) including an annular oxygen-containing gas supply chamber (82a), an annular oxygen-containing gas discharge chamber (82b) to which heated oxygen-containing gas is discharged, heat exchange pipes (74) with a first end connected to the gas supply chamber and a second end connected to the gas discharge chamber, and a combustion gas channel (120c) for supplying combustion gas between the pipes. A circumscribed non-uniform-flow suppression plate (116a) is provided along a minimum circumscribed circle which contacts outer surfaces of the pipes.    USE - Fuel cell module i.e. solid oxide fuel cell module (claimed), for use in a fuel cell system of a vehicle in stationary and mobile applications for generating electrical energy in power generation by electrochemical reactions of fuel gas and oxygen-containing gas e.g. air.    ADVANTAGE - The annular oxygen-containing gas supply chamber, the annular oxygen-containing gas discharge chamber, and the heat exchange pipes are provided as basic structures in the heat exchanger, so that simple and compact structure of the fuel cell module can be achieved easily while suppressing generation of waste heat and heat radiation, facilitating thermally self-sustaining operation and achieving improvement in heat efficiency, and production cost is reduced effectively, and desired operation can be achieved depending on various operating conditions, by changing the volumes of the oxygen-containing gas supply chamber and the oxygen-containing gas discharge chamber, and length, diameter, and number of the pipes. The circumscribed non-uniform-flow suppression plate is provided along the minimum circumscribed circle which contacts the outer surfaces of the heat exchange pipes, so that combustion gas flows along the outer surfaces of the heat exchange pipes by guidance action of the circumscribed non-uniform-flow suppression plate, thus suppressing non-uniform flow and blow-through of the combustion gas, and making flow channel of combustion gas to be longer, and hence increasing quantity of heat received from combustion gas by oxygen-containing gas, and achieving improvement in heat exchange efficiency.    DETAILED DESCRIPTION - The heat exchange pipes are heat transmission pipes.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross sectional view of a fuel cell peripheral equipment.    Fuel cell module (12)    Heat exchanger (50)    Heat exchange pipes (74)    Annular oxygen-containing gas supply chamber (82a)    Annular oxygen-containing gas discharge chamber (82b)    Circumscribed non-uniform-flow suppression plate (116a)    Combustion gas channel (120c)