Study effect of variation in packing height on numbers of transfer unit for cross cooling tower 横流塔填料高度变化对冷却数影响的研究
Through regressing experimental data, the correlative expressions of the axial backmixing parameter Pe and the pressure drop of packing layer Δ p/ Z and the height of mass transfer unit H OG were obtained. 通过对实验数据的回归分析得出了轴向返混参数、填料层压降及传质单元高度的关联式。
By correlating the experimental data, equations for calculating the pressure drop, packing factor, flooding gas velocity and gas phase overall height of a transfer unit were obtained. The calculated results were in conformity with the experimental data, which maximum deviation was 17%. 通过试验数据处理,得到了计算该填料层压降、填料因子、液泛气速和气相总传质单元高度的关联式,这些关联式的计算结果与实测结果吻合较好,其中最大偏差为(±17%)。
The minimum liquid& vapor ratio and the Height of Mass Transfer Unit "HTU" can be obtained in lack of interphase heat transfer coefficient by the model. 利用该模型可以在缺乏相间传热系数的情况下,计算出最小液-汽比及传质单元高度HTU。