A Review on Experimental Investigation of Natural Convection Heat Transfer with a Special V fin Array

Natural convection from vertical surfaces with large surface element is encountered in several technological applications of particular interest of heat dissipation from electronic circuit. Natural convection represents an inherently reliable cooling process. Because of boundary layer development, the tall vertical fins restrict the heat transfer enhancement. . This heat transfer enhancing technique was investigated for natural convection adjacent to a vertical heated plate with a multiple v- type partition plates (fins) in ambient air surrounding. In order to enhance the heat transfer, V-shaped partition plates (fins) with edges faced upstream were attached to the two identical vertical plates. The V-type partition plates with two different heights were tried. The heat transfer in the downstream region of the partition plate is markedly enhanced when the plate height exceeds certain critical values because of the inflows of the low temperature fluid into the separation region. It was observed that among the three different fin array configurations on vertical heated plate, V-type fin array design performs better than rectangular vertical fin array and V-fin array with bottom spacing design. The performance was observed to improve further, with increase in the height of the V-plates.