Abstract

In the present research, an experimental investigation is carried out for analysing the heat transfer performance by designing the fin with rectangular cross-section. The heat transfer performance of fin with same geometry having perforations and without perforations is compared. Approximately 3% to 5% more heat transfer rate can be achieved with perforated fin as compared with same geometry of fin without perforations. In thermal analysis, variation of temperature with respect to the distance at which heat flow occur through the fin is analyzed. Extension surfaces with perforations is used to increases the surface area of the fin in contact with the fluid flowing around it. When the surface area increases, more fluid comes in contact with surface which increases the rate of heat transfer. Here the mode of heat transfer is forced convection and it can be accomplished by using the blower with regulator and the flow analysis can be analysed by calculating Reynolds number, Nusselt number for the fin with perforations and without perforations.

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