垂直通気層の放湿効果におよぼす上下端開口形状の影響 : 通気層による構造体の防湿効果に対する研究・その2

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タイトル別名
  • CONFIGURATION EFFECT OF OPENED EDGES OF VERTICAL AIR LAYERS ON THE EFFICIENCY OF VAPOR DISCHARGE : Effect of air layers with opened edges on moisture in building assembly Part 2
  • 垂直通気層の放湿効果におよぼす上下端開口形状の影響--通気層による構造体の防湿効果に関する研究-2-
  • スイチョク ツウキソウ ノ ホウシツ コウカ ニ オヨボス ジョウ カタン カ

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抄録

This paper reports the effects of rectangular opened edges of vertical air layers on the efficiency of vapor discharge. Varying the width, location and direction of rectangular opended edges and the width of air layer, the following results are obtained ; 1) The efficiency of vapor discharge is fairly small when the upper edge is opened and the lower edge is closed, and is extremely poor when vice versa. 2) When slits with width of less than 2 cm are opened at the both edges of vertical air layer, the efficiency of vapor discharge is positively affected by the thickness of air layer, given the width of slits. It is, however, invariant with the thickness of air layer if the air layer is more than 3 cm thick. 3) Given the thickness of air layer and the total area of opened edges, the slits exhibit the slight higher efficiency of vapor discharge than rectangular openings. 4) The equivalent vapor transmission coefficient depends largely of the difference of humidity in the cases where the thickness of air layer is less than 3 cm.

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