Heat transfer characteristics of rectangular heat exchanger with circular fin roughness

Abstract

Abstract The methodology of the circular fin heat exchanger has been analysis by the help of ANSYS fluent workbench and the Ansys fluent also known as computational fluid dynamics (CFD), which used to design the single heat exchanger rectangular channel with parameters. The single rectangular channel is a 605 mm long with height H = 66 mm and width is 30 mm. Under a constant heat flux of I = 1000 w/m2, a heat exchanger fin tube bank being tested. The results of this investigation lead to the following conclusions: Nusselt number improves with changes in Reynolds number when pitch distance between the circular fins used. Heat transfer grows as well as friction factor reduces with increasing Reynolds number values (Re = 2000–8000). At pitch spacing P/l = 9 mm, P 1 = 21 mm, l = 20 mm, as well as Reynolds number Re = 8000, the number of the heat transfer rate rose 5.28 times.