NOVELTY - Energy generation unit comprises a high temperature fuel cell stack, which is operated with liquid fuel, a reformer connected upstream of the fuel cell stack for processing the fuel, a recirculation line for at least partially feeding back the anode exhaust gas into the reformer and a device for feeding the liquid fuel into the anode exhaust gas. The device for feeding the fuel is in the form of an evaporator device (20), which comprises a housing (21) which has an evaporator fleece (23) in the region of the fuel feed line (22).    USE - Used as an energy generation unit.    ADVANTAGE - The energy generation unit achieves: accurate metering of the liquid fuel; and homogenization of the reactant gas even in partial load operation.    DETAILED DESCRIPTION - Energy generation unit comprises a high temperature fuel cell stack, which is operated with liquid fuel, a reformer connected upstream of the fuel cell stack for processing the fuel, a recirculation line for at least partially feeding back the anode exhaust gas into the reformer and a device for feeding the liquid fuel into the anode exhaust gas. The device for feeding the fuel is in the form of an evaporator device (20), which comprises a housing (21) which has an evaporator fleece (23) in the region of the fuel feed line (22). The hot anode exhaust gas is applied to the evaporator fleece from the recirculation line. The housing of the evaporator device is arranged in an exhaust chamber (26) of the energy generating unit which receives hot exhaust gases of exhaust chamber. An INDEPENDENT CLAIM is also included for an evaporator device for producing a feed gas from a hot carrier gas, e.g. anode off-gas, and a liquid fuel for operating a high temperature fuel cell stack with an upstream reformer, comprising a cylindrical housing on one side, preferably at the center, for the fuel and gas outlet on the opposite side, for the feed gas, preferably anode exhaust gas and vaporized fuel.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of the evaporator device of the exhaust chamber.    Evaporator device (20)    Housing (21)    Fuel feed line (22)    Evaporator fleece (23)    Exhaust chamber (26)