| 摘要 |
PROBLEM TO BE SOLVED: To prevent hot-water, flowing down through an always wet space formed in the filling material of a heat exchanging unit and other hot-water, flowing down through a neighbored wet type/dry type switching space, from moving to enter into each other. SOLUTION: In a water cooling tower, a filling member 20, having always wet type spaces 21 and wet type/dry type switching spaces 22 by arraying filling plates 20a, 20b, extended in up-and-down direction, in the horizontal direction, is formed while a multitude of stages of the filling members 20 are arranged in a heat exchanging unit 6 below a hot-water tank to introduce outdoor air into the always wet spaces 21 as well as the switching spaces 22 and supply hot-water 12 into the always wet type space 21 while supplying the hot-water 12 into the switching spaces 22 only when an outdoor air temperature is higher than a predetermined value and a humidity in the same space is lower than a predetermined humidity. In such a water cooling tower, a connecting plate structure 35, precluding the movement of the hot-water 12 between the always wet type spaces 21 and the switching spaces 22, is provided between the upper stage filing plates 20a and the lower stage filling plates 20a, which are forming the switching spaces 22.
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