Tiny Cooling Fan thermal design principles and calculating self-cooled

"Tiny Cooling Fan" in the natural convection and radiation, the tablet vertically mounted radiator, radiator channel profiles should be vertical. Surface of the blade should be painted or treated so that it has good emissivity, e.g., aluminum should be subjected to oxidation treatment. As for the mandatory "Tiny Cooling Fan" convection radiator, they should be positioned no hard and fast rules, of course, is still to make the cooling air through the channel "Tiny Cooling Fan" radiator vanes between the principle of free movement.