13 乾燥室内氣流觀察の一方法
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概要
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We observed the convections of a natural circulation kiln with a model by the "Schlieren Method", to study the circulations in a dry kiln of lumber. Our observations were done on the next items.1. Circulations varied with the setting of heaters.2. Circulations varied with the position and sizes of the outlet ports. Results of these observations are as follows, 1. a) On the case of the level type, end of heaters shoulp of be set about 50 cmapart fromawall.b) Mountain type and V type have not great differences in its effiency to correct the heating current to the middle of a kiln.2. Conditions observed on these items are I, (20×5mm) II, (20×10mm) III. (20×15mm) IV, (20×20mm); port Sizes; and in each case, the positions were changed 8 times on the wall from the bottom to the top.In case of I, Normal circulation only II, II.1 II.5 normal circulation II, II.6 II.8 reverse circulation III, III..1 III.3 normal circulation III, III.4 III.8 reverse circulation IV, IV.1 IV.3 normal circulation IV, IV.4 IV.8 reverse circulation
- 一般社団法人日本森林学会の論文
- 1950-02-25