1, "Small Cooling Fan" heat conduction, convection and radiation. Substance itself or the substance when in contact with the material, energy transfer is called heat conduction, which is the most common form of heat transfer. For example, CPU heatsink base in direct contact with the CPU heat away way belongs to the heat conduction.
2, "Small Cooling Fan" thermal convection: refers to the flow of a fluid (gas or liquid) will go tropical heat transfer mode, the computer chassis cooling system is more common cooling fan driven by the flow of gas, "Forced convection "cooling.
3, "Small Cooling Fan" thermal radiation: that is to rely on the transfer of heat rays, the most common is the daily solar radiation. These three cooling methods are not isolated, in the daily heat transfer in three ways that are simultaneously heat, work jointly.