Volume 10 Issue 1 ( March 2023 )

This paper presents a comparative study for amount of natural convection heat transfer of solid and perforated faced fins. Effect of number of perforation and its size on natural convection characteristic is also investigated. Experiment is being done for solid fins and perforated fins having different number of perforations on its surface. Effect of size of the perforation and fins spacing on the surface where it need to be mounted is also examined. Solid works software is used for the modelling of the fins and steady state thermal model of ANSYS software is used for the numerical analysis and optimization of the fin’s porosity. Analysis is done for 1,2, 3, 4, 5 row inline and zig-zag perforations for different pores diameter which are 4mm, 6mm, 8mm, 10mm and 13mm respectively. Fins spacing on the mounted surface is also an influencing parameter to control the natural heat transfer. Fins spacing is taken 6mm, 8mm, 10mm, 12mm respectively. After the detailed analysis it was concluded that perforated fin should be used over the solid fins to improve the heat transfer rate and for the temperature decrement of the fins surface. Analytical results have presented in this paper in which it is shown that perforated fins having 5 row zig-zag pattern holes with 10mm hole diameter and 10 mm fins spacing can give the optimized result.

Keywords: Natural Heat Transfer, Perforated Fins, ANSYS, Solid Works