Natural Convection heat transfer enhancement from rectangular fin arrays with diverse geometrical perforations

Abstract

Heat dissipation is a drastic issue to handle due to continued integration, miniaturization, compacting and lightening of equipment. Heat dissipaters are not only chosen for their thermal performance; but also for other design parameters that includes weight, cost and reliability, depending on application. Present study has been taken place with circular perforated fin array with different perforation diameter. The main objective of this paper is the Numerical study to quantify Natural Convection heat transfer enhancement of fins array with different types of perforations like Circular, Elliptical, Square and Triangular based on its performance as well as with saving in material by mass. The variables for this natural convection cooling with the help of finned surfaces are geometrical parameters and positioning of perforation. In this study, the steady state heat transfer from the solid fin and perforated fin arrays are compared. The optimized parameters are analysed for better heat transfer coefficient. The increase in the heat transfer coefficient was achieved with perforated fins for area corresponding to 12mm perforation diameter, which shows better enhanced heat transfer coefficient as opposed to the solid fin array with saving in material by mass.