Convective Heat Transfer from Tube Banks of 8 Rows with In-Lined Arrangements in Crossflow

Abstract

Due to the superior heat transfer efficiency and cheaper cost compared to other types of heat exchangers, the inline crossflow heat exchanger is often employed in the process sector. Modelling of the flow arrangement is usually used as the foundation for the unit's design. The tube pitch distance ratio, Reynolds number, and fluid entry velocity into the heat exchanger are all modified in this study. The resistance to airflow around a heat exchanger is directly correlated with the distance between tubes. More excellent heat transmission is encouraged by smaller spacing since it improves the surface contact area per volume. However, more pumping force is needed to force air through the confined space. The optimum ratio of heat transmission over the necessary pumping power is provided by optimal tube spacing. A flow through a heat model with an in-line structure that has two rows and eight tubes per row was investigated experimentally in the Reynolds number range of 5000 to 30000. In various tube pitch distance ratios, the distribution of local static pressure was experimentally established around the tubes. Additionally, the overall pressure loss was calculated. FLUENT, a programme for computational fluid dynamics (CFD), is being used in this work to evaluate the pressure drop and velocity vectors that occur as fluid flows over a vertical tube.