Patent ID: 7361211

Claim:
A moisture exchange module comprising: a bundle of moisture-permeable hollow fibre membranes having a longitudinal bundle axis; a gas stream flowing through the hollow fibres; an inflow region disposed adjacent to the bundle of hollow fibre membranes and having a cross-section approximately equal to a cross-section of the bundle of hollow fibre membranes; at least one line element configured to supply the gas stream and having an interior cross-section and a line axis, the at least one line element opening tangentially into the inflow region at an angle of from 60° to 120° with respect to the bundle axis so that the line axis does not intersect the bundle axis; an annular diverter device configured to divert a flow of the gas stream and disposed between the interior cross-section of the line element and the inflow region so as to form an annular gap, the annular gap being connected to the at least one line element and connected to the inflow region on a side of the inflow region remote from the bundle of hollow fibre membranes.