Simulation Approach for Cathodic Protection Prediction of Aluminum Fin-Tube Heat Exchanger Using Boundary Element Method

Metals

Yong-Sang Kim¹  In-Jun Park²  Jung-Gu Kim² 

[1] Department of Mechanical and Materials Engineering, Korea Institute of Nuclear Safety, 62, Gwahak-ro, Yuseong-gu, Daejeon 34142, Korea;School of Advanced Materials Engineering, Sungkyunkwan University, 2066, Seobu-Ro, Jangan-Gu, Suwon-Si 16419, Gyonggi-Do, Korea;

关键词: aluminum;    heat exchanger;    galvanic corrosion;    simulation;    polarization;   

DOI  :  10.3390/met9030376

来源: DOAJ

【 摘 要 】

The multi-galvanic effect of an Al fin-tube heat exchanger was evaluated using polarization tests, numerical simulation, and the seawater acetic acid test (SWAAT). Determination of the polarization state using polarization curves was well correlated with numerical simulations using a high-conductivity electrolyte. However, the polarization results did not match those of the low-conductivity electrolyte due to the lower galvanic effect. Although the polarization state is changed by electrolyte conductivity, the total net current of the tube is decreased in the case of the anodic joint. From SWAAT results, the leakage time of Al fin-tube heat exchanger assembled by anodic joint was longer than the case with cathodic joint.

【 授权许可】

Unknown