【摘要】 本文采用LDCT法测得了液固传质数据,并根据传质传热类比,得到了垂直同心圆管内气液并流向上时的传热数据和垂直管内气液向上流过横管时的传热数据。实验结果和shah的传热关联图进行了比较,吻合情况良好。通过对实验数据的处理,获得如下无因次准数关联式:<1> 同心圆管中的传热<2> 鼓泡塔中的传热<3> 垂直管内气液流过横管时的传热更多还原

【Abstract】 Heat transfer coefficients of gas-liquid two-phase flow were studied by LDCT (the limiting diffusion current technique) for two different cases: case 1.In vertical annuli;case 2. The gas and liquid flow across a transverse tube. Nitrogen and an equimolar solution of potassium ferri-and ferro-cyanide with excess sodium hydroxide were used. The results were found to agree fairly well with those of shah.The experimental data were correlated and the following dimensionless equations were obtained respectively: case 1: ; JH = 330ReL-0.792 (UoG /UOL ) 0.211 (μG/ μL) 0.542For heat transfer in bubble columns:StH= 0.168 (ReGFrGPrL2) -0.260 ReL-0.026case 2:JH = 26. 2ReL-0.637 (UoG /UOL ) 0.113 (μG /μL ) 0.420更多还原