In order to investigate the impact of water quality on fouling process of enhanced tubes, two continuous fouling tests on eight enhanced tubes (with different internal and external tube geometries) and one plain tube (with a plain inside surface and an enhanced outside surface) were carried out in duration of 98 days, using cooling water with medium and low fouling potential respectively at a water velocity of ∼1.6 m/s. Compared with the medium fouling potential water, the introduction period of fouling on a plain tube in low fouling potential water test was much longer than enhanced tubes. Test results suggested that the influence of water quality on fouling development was much larger than geometry of heat transfer tubes when the water quality changed from low to medium fouling potential. For one heat transfer tube, the asymptotic fouling resistance was continuously increasing with the increase of fouling potential of water. In this study the length index ($\gamma$) determined by the geometry of enhanced tube was introduced to improve the accuracy of previous fouling model. Finally, an improved fouling prediction model considering the effect of water quality was developed, which had a maximum error of 22.94%.

为了调查水质对增强管结垢过程的影响，对八支增强管（内外管几何形状不同）和一根普通管（内表面和外表面均经过增强）进行了两次连续结垢测试持续98天，使用中度和低结垢潜力的冷却水，水速分别为〜1.6 m / s。与中等结垢潜力水相比，在低结垢潜力水试验中，普通管上结垢的引入期要长于增强管。测试结果表明，当水质从低到中度变化时，水质对结垢的影响远大于传热管的几何形状。对于一根传热管，随着水的结垢潜力的增加，渐近结垢阻力不断增加。在这项研究中，长度指数（$\gamma$）由增强管的几何形状确定，以提高以前的结垢模型的准确性。最后，建立了一种考虑水质影响的改进的结垢预测模型，其最大误差为22.94％。