Experimental Investigation of Forced Convection on Square Micro-Pin Fins

摘要

An investigation is to be conducted to determine whether micro-pin fin can increase heat transfer under forced convection or not. This would be accomplished by performing an experimental investigation. In the present analysis, thermal effectiveness of square micro-pin fin arrays under forced convection conditions in air was studied. Square micro-pin fins of different sizes are tested for three different heat loads, and it was observed that heat transfer performance of stainless steel micro-pin fins was enhanced 5-15% compared with flat plate fins. Further, increase in the overall Nusselt number of the surface was found due to boundary layer regeneration and enhanced flow mixing. In addition, heat transfer effectivity and thermal resistance were decreases with the increase of Reynolds numbers.