Determination of airside heat transfer coefficient on wire-on-tube type heat exchanger

Abstract

Experiments were conducted to obtain the correlation on the airside heat transfer coefficient of wire-on-tube type heat exchangers using single layer samples. Correction factors to the Zhukauskas correlation were determined from the experimental results. Numerical analysis and experiments were performed to validate the applicability of these correction factors using three wire-on-tube type condensers. The results show that the average discrepancy between the performance experiments and present numerical results using the correction factors obtained from this study and Zhukauskas correlation shows 3.7%, while it was 24.7% when the existing correlation was used.