(WO9721257-A2)      A procedure for operating a high temperature fuel cell has the fuel gas needed for the electrochemical reaction produced by a reforming process, whereby more hydrogen is created than is needed in the cell. The heat for the reforming process is taken from the electrochemical fuel cell reaction. The fuel gas is reformed both inside the fuel cell module as well as before entering the module. There is a storage device (70) in an exhaust path (10) of the anode portion (20) of the module (4). There is also a load in the same path as well as heat exchangers (28,32) to transfer the heat content of the exhaust to the reformer (5).    ADVANTAGE -   Optimised power density.    (EP865674-A2)      A procedure for operating a high temperature fuel-cell has the fuel gas needed for the electrochemical reaction produced by a reforming process, whereby more hydrogen is created than is needed in the cell. The heat for the reforming process is taken from the electrochemical fuel cell reaction.    The fuel gas is reformed both inside the fuel cell module as well as before entering the module. There is a storage device (70) in an exhaust path (10) of the anode portion (20) of the module (4). There is also a load in the same path as well as heat exchangers (28,32) to transfer the heat content of the exhaust to the reformer (5).    ADVANTAGE -   Optimised power density.    (JP2000501227-W)      A procedure for operating a high temperature fuel-cell has the fuel gas needed for the electrochemical reaction produced by a reforming process, whereby more hydrogen is created than is needed in the cell. The heat for the reforming process is taken from the electrochemical fuel cell reaction.    The fuel gas is reformed both inside the fuel cell module as well as before entering the module. There is a storage device (70) in an exhaust path (10) of the anode portion (20) of the module (4). There is also a load in the same path as well as heat exchangers (28,32) to transfer the heat content of the exhaust to the reformer (5).    ADVANTAGE -   Optimised power density.    (US6162556-A)      A procedure for operating a high temperature fuel-cell has the fuel gas needed for the electrochemical reaction produced by a reforming process, whereby more hydrogen is created than is needed in the cell. The heat for the reforming process is taken from the electrochemical fuel cell reaction.    The fuel gas is reformed both inside the fuel cell module as well as before entering the module. There is a storage device (70) in an exhaust path (10) of the anode portion (20) of the module (4). There is also a load in the same path as well as heat exchangers (28,32) to transfer the heat content of the exhaust to the reformer (5).    ADVANTAGE -   Optimised power density.    (EP865674-B1)      A procedure for operating a high temperature fuel-cell has the fuel gas needed for the electrochemical reaction produced by a reforming process, whereby more hydrogen is created than is needed in the cell. The heat for the reforming process is taken from the electrochemical fuel cell reaction.    The fuel gas is reformed both inside the fuel cell module as well as before entering the module. There is a storage device (70) in an exhaust path (10) of the anode portion (20) of the module (4). There is also a load in the same path as well as heat exchangers (28,32) to transfer the heat content of the exhaust to the reformer (5).    ADVANTAGE -   Optimised power density.