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本文依据大量螺旋槽管污垢特性的实验数据,分析螺旋槽换热表面的污垢形成机理,考虑换热表面结构对污垢沉积和剥蚀过程的影响,同时考虑饱和度对溶液颗粒污垢沉积的影响,合并螺旋槽换热表面的强化传热特性,建立了螺旋槽换热表面的污垢预测模型。将螺旋槽管污垢预测模型的计算结果同实验数据结果相对比,污垢热阻随时间的预测值与实验值的误差控制在15%以内。
Based on the experimental data of a large number of fouling characteristics of spiral grooved tube, the formation mechanism of fouling on spiral heat transfer surface is analyzed. The influence of heat transfer surface structure on fouling and denudation process is considered. Meanwhile, the influence of saturation on fouling of solution particles is considered. The enhanced heat transfer characteristics of the helical groove heat transfer surface are established, and the fouling prediction model of the spiral groove heat transfer surface is established. Comparing the calculation results of the spiral groove pipe fouling prediction model with the experimental data, the error of the fouling thermal resistance with the predicted value and the experimental value of the time is controlled within 15%.