Fouling in heat exchangers is inevitable and causes a reduction in their thermal effectiveness and an increase in pumping costs. This dissertation aims to validate an alternative heat exchanger cleaning device, which automates the process and does not require the interruption of the industrial process that uses exchangers. The motivation for the research resulted from the challenge imposed on the Metrology Program at PUC-Rio to devise an innovative solution to perform the online cleaning of hydrogenerator heat exchangers, made possible with financing from the electricity sector and which motivated this dissertation. The master s research development methodology pursued two optimization strategies: (i) improving the hydrodynamics of the hydraulic circuits of the designed cleaning device, aiming to reduce pumping costs and (ii) simulating the number of minimum cleaning cycles to ensure that all the tubes of the heat exchanger are visited by cleaning artefacts. Among the consolidated results, the following stand out: (i) improvement of hydrodynamic flows in the different hydraulic sections of the servo-hydraulic cleaning device; (ii) metrological reliability of the measurement system embarked in the equipment and (iii) development of probabilistic modeling capable of predicting the number of cleaning cycles capable of ensuring the efficiency of the exchanger cleaning procedure, which contributes to its understanding. The performance tests performed in the laboratory support the conclusion that the master s research was able to validate and make available a hydrodynamically more efficient and operationally more effective version of the cleaning device originally designed.