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방해판이 부착된 교반조의 교반소요동력의 추정

Estimation of Power Input in a Baffled Agitated Vessel

이영세 이수각 김종식

Lee YS Lee SK Kim JS

HWAHAK KONGHAK, February 1995, 33(1), 46-55(10), NONE

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Abstract

본 연구에서는 난류역 완전방해판 조건하의 교반소요동력을 기왕의 연구자의 결과와 본 실험결과와의 비교, 검토를 행하였으며 양호한 동력상관식을 제시한다._x000D_ N_P=7.09(n_p)^0.7(b/d)(H/D)^0.18 n_p^0.7(b/d)<1_x000D_ N_P=7.09{(n_p)^0.7(b/d)}^0.7(H/D)^0.18 n_p^0.7(b/d)≥1_x000D_ 또한 교반 impeller 부착위치에 따른 동력수의 추산식을 제시한다._x000D_ N_p(min)=N_p(max)-2.47n_p^1.32(b/d)^1.71 n_p^1.32(b/d)^1.71≤2.87_x000D_ N_p(min)=N_p(max)-7.06 n_p^1.32(b/d)^1.71>2.87

In the present study, power input in the totally baffled agitated vessels was compared systematically in connection with several previous studies and adequate power input correlation was found to be:_x000D_ N_P=7.09(n_p)^0.7(b/d)(H/D)^0.18 n_p^0.7(b/d)<1_x000D_ N_P=7.09{(n_p)^0.7(b/d)}^0.7(H/D)^0.18 n_p^0.7(b/d)≥1_x000D_ Power number correlation was also formulated experimentally, which was dependent upon the position of the impeller in the stirred vessels, as follows:_x000D_ N_p(min)=N_p(max)-2.47n_p^1.32(b/d)^1.71 n_p^1.32(b/d)^1.71≤2.87_x000D_ N_p(min)=N_p(max)-7.06 n_p^1.32(b/d)^1.71>2.87

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