HOLLOW-FIBER MEMBRANE MODULE FOR MOISTURE EXCHANGE

Disclosed is a hollow-fiber membrane module for moisture exchange, said module being capable of sufficiently humidifying a dry oxidant gas supplied into hollow-fiber membranes, minimizing imbalance in the filled hollow-fiber membranes, and evenly circulating a humidified off-gas. The disclosed hollow-fiber membrane module is provided with: a tube-shaped external case; a tube-shaped internal case enclosed concentrically inside the external case; a plurality of hollow-fiber membranes that are packed into a packing space between the external and internal cases and that extend in the axial direction; seals that affix the plurality of hollow-fiber membranes at both ends of the packing space and that seal the packing space; an inlet provided on one end of the internal or external case; an outlet provided on the other end of the external or internal case; first fluid channels that run from one end of the hollow-fiber membranes to the other via the hollow interiors of the hollow-fiber membranes; a second fluid channel that runs from the inlet to the outlet via the outside of the hollow-fiber membranes; and a porous tube that is inserted between the hollow-fiber membranes, concentrically with the external and internal cases, and that extends along the packing space.