System for water recovery from an exhaust stream of a fuel cell of an aircraft

The hot side of the condenser (CON) lies ahead of the expansion unit (T1) and the coolant is formed by dried fuel cell (BZ) outlet gas, which has first been depressurized in the expansion unit (T1). The hot side of the condenser outlet connects to the inlet of a water separator (WE). The heat exchanger is regenerative. The expansion unit is implemented as a turbine (T1), which is connected in turn to an electrical generator. Further salient features of the system include a cabin-air turbine (T2), fuel cell operation at high temperature, a reformer generating hydrogen (ATR) for the fuel cell, an after-burner (Burner), and a nitrogen-pressurized containment vessel.