| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a hollow yarn membrane module making sweep air easy to flow in a shearing direction with respect to hollow yarn membranes even in the vicinity of a housing and enhanced in dehumidifying capacity by providing a plurality of opening parts to the wall surface other than the potting part of the housing. SOLUTION: Sweep air supply perforated pipes 3 are arranged on a knitted fabric obtained by knitting hollow yarn membranes 2 into a sheet shape in the same direction as the hollow yarn membranes and uniformly superposed to be rolled to form a winding layer member. This winding layer member is housed in a housing 1 and both ends thereof are fixed by a potting agent. Since the potting part 5 on the inlet side of air to be dehumidified is cut along with hollow yarn bundles, the hollow yarn membranes 2 are fixed in an open state and the steep air supply perforated pipes 3 are embedded in the potting part in an open state to be fixed. Two or more opening parts 4 are provided in the wall surface excepting the potting parts 5, 6 of the housing and the total area ratio of the opening parts occupying the area of the wall surfaces is pref. set to 1-50%. Thereupon, sweep air is easy to flow in a shearing direction and the boundary film of the outside is destructed.</p> |
