半圆管夹套的传热研究  

HEAT TRANSFER IN AGITATED VESSEL WITH HALF-PIPE -COIL JACKET

作　　者：王文清[1] 冯连芳[1] 王凯[1] 高步良[2] 王迎春[2] 

机构地区：[1]浙江大学化工系,杭州310022 [2]齐鲁石油化工公司研究院,淄博255436

出　　处：《合成橡胶工业》1990年第2期83-87,共5页China Synthetic Rubber Industry

摘　　要：采用稳态法关联与非稳态法进行冷却时间校核相结合的方法,在直径为0.45m的不锈钢搅拌釜中,对电热体系和内冷管体系,分别采用单层三叶后掠式桨,双层Brumoein桨和双层三叶后掠式桨的组合,对半圆管夹套的传热进行了研究,得到了在湍流域的传热关联式:Nu=0.044Re^(0.3)×Pr^(1/3)Viso^(0.14)式中,Nu、Re中的定性长度均取半圆管夹套的当量直径(=0.611d)。稳态法关联与非稳态法校核的平均偏差分别为7.5％与4.0％,可供设计工业搅拌釜时参考。Heat transfer from the half-pipe-coil jacket side toward the liquid in the agitated vessel was investigated in an agitated stainless steel tank with a diameter of 0.45m and equipped with either helical cooling/heating tubes or electric heating baffles in the tank. The agitators used were 3-bladed retreat blade impeller and Brumagin impeller. The heat transfer correlation in the turbulent flow region for the outside-film coefficients was determined by Wilson's empirical steady method and compared with results by non-steady method. The correlation was expressed as: Nu = 0.044Re0:8 Pr1/3 Vis0114 The average deviations between the rusults calculated by this equation and those by the non-steady method were 7.5% and [4.0%, respectively.

关 键 词：搅拌反应釜 夹套式 换热器 传热 

分 类 号：TQ051.5[化学工程]