To study the occurrence of biofouling phenomenon on heat exchanger surfaces, a new biofouling thermal resistance model for heat exchanger surface was developed. Considering the effect of microbial activity on fouling resistance, a growth term of surface biofilm was introduced into the Kern–Seaton model. The microbial growth dynamics was described by using a modified Gompertz model. The occurrence of fouling process due to iron bacteria in a tube and an alternating elliptical axis tube were considered as examples to validate the fouling model. The results showed that the relative error between the calculated data obtained from new microbial fouling resistance model and experimental data was less than 10%, in addition to the induction phase.

中文翻译：

---

具有传热表面表面生物膜生长项的生物污垢热阻模型


为了研究换热器表面生物污垢现象的发生，建立了一种新的换热器表面生物污垢热阻模型。考虑到微生物活动对抗污性的影响，Kern-Seaton模型中引入了表面生物膜的生长项。使用修改后的 Gompertz 模型描述微生物生长动力学。以管内铁细菌引起的结垢过程和交替椭圆轴管为例来验证结垢模型。结果表明，除诱导阶段外，新的微生物抗污模型计算数据与实验数据的相对误差小于10%。