Fuzzy logic to predict the heat transfer in an air cooler equipped with different tube inserts

This paper highlights the application of fuzzy logic to predict the heat transfer in an air cooled heat exchanger equipped with three types of tube inserts including; butterfly, classic and jagged twisted tape. In the study which was carried out in the range of Reynolds number, the maximum heat transfer was obtained by the butterfly insert with an inclined angle of 90°. The results have also revealed that the heat transfer rates obtained by employing the classic and jagged inserts, reduced by increasing twist ratio. Moreover, it has been also shown that, fuzzy logic is a powerful technique used for predicting the heat transfer due to its low error rate. The average error of fuzzy technique as compared with experimental data was found to be 0.68% for this study.

► Fuzzy Logic was used for modeling.
► Reynolds number, inclined angle and Twist ratio were chosen to be varied.
► It was observed that maximum heat transfer occurred at the Twist ratio of 1.76.
► Heat transfer increased by decreasing twist ratio.
► Fuzzy Logic is a reliable method for modeling.