Moisture exchanger and fuel cell arrangement comprising same

A moisture exchanger for transferring moisture between two gases, the moisture exchanger comprising:

• a plurality of hollow fiber membranes extending in a length direction, the hollow fiber membranes being spaced from each other in a thickness direction and a width direction;
• a housing including a housing frame housing the plurality of hollow fiber membranes, the housing frame having housing frame end walls including a plurality of openings, the plurality of fibers extending through and into the openings of the housing frame end walls, the housing having side walls in the length direction between the housing frame end walls;
• at least one partition situated in the housing between the hollow fiber membranes and dividing the plurality of hollow fiber membranes in a plane extending in the length and width directions, and supported in the side walls of the housing but spaced apart from both of the housing frame end walls at partition ends to define a plurality of parallel-connected areas having a plurality of hollow fiber membranes spaced apart side-by-side in the width direction, the parallel connected areas being open between the side-by-side hollow fiber membranes to permit widthwise distribution of a first gas of the two gases, a length of the at least one partition being smaller than a side wall length of the side walls in the length direction so that the parallel-connected areas are connected at flow-through cross-sectional areas between the partition ends and the housing frame end walls so as to permit thicknesswise distribution of the first gas between the plurality of parallel-connected areas, a second gas of the two gases passing through the hollow fiber membranes.