2.2. Convective transfer
The exchange of heat between a surface and a moving fluid in contact with it, or the transfer of heat within a fluid through the collective movement of its molecules from one point to another. In the process of convection, heat always moves from hot regions to cold regions.
Convection is the transfer of heat with the transfer of mass ;
Common phenomenon (weather, domestic heating...).
Example :
It is through convection that heat, transmitted to water inside a boiler, is transported to the different rooms of an apartment.
