Experiment and numerical simulation for characteristics of two slotted fins

In order to enhance the heat transfer capacity of air-cooler, the air-side heat transfer and fluid flow characteristics of fins in two different types (X-type and annulus sector type) with four-row slotted in pressurizing air cooler were studied experimentally and numerically by infrared thermovision and Fluent software. The heat transfer and friction factor correlations were obtained in a wide range of Reynolds number. The air velocity and temperature fields between two neighboring fins, the distribution of local heat transfer coefficient and pressure drop in flow direction were obtained by numerical simulation. It shows that the consequence of numerical simulation accords with the experimental value, and the heat transfer characteristics of slotted fin in X-type are better than that of the fin in annulus sector type. Moreover, the pressure loss of the former is much lower than the latter.