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

Abstract 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.