| 摘要 |
PROBLEM TO BE SOLVED: To substantially enhance humidification ability by uniformly spreading a drying gas to an outer surface of a hollow fiber membrane inserted into a cylindrical body as a housing. SOLUTION: In the humidification module 4, both ends of a hollow fiber membrane bundle 7 in which a large number of water-permeable hollow fiber membrane 6 are bundled are fixed and supported between one end and the other end in a housing 5 by a potting part 8, and an entrance 5A and an exit 5B for humidifying by passing a gas are provided on this housing 5. Viewing the humidification module 4 in a predetermined cross section along a length direction of the hollow fiber membrane bundle, a ratio L/A of the shortest length L tightened to an area where the hollow fiber membrane bundle 7 clamped by the potting parts 8, 8 each other is filled and a length A of a diagonal line tightened to the area satisfies the following condition 1 or a ratio D/L of a height D of the hollow fiber membrane bundle 7 of the area where the hollow fiber membrane bundle 7 clamped by the potting parts 8, 8 each other is filled and the shortest length L tightened to the area satisfies any one of the condition 1: 2<arcos(L/A)<=19; condition 2: 2<arctan(D/L)<=19. Provided that a unit is degree and L/A and D/L are less than 1.
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