The course begins with the general definition of heat in thermodynamics following ... Finally, the problem of heat transfer by natural convection for both laminar and turbulent boundary layer flow ...

However, despite their name, radiators actually transfer most of their heat to a room by convection, not radiation. Normally radiant heaters must be at least red hot before they are effective.

These convection currents can transfer heat energy into the loft. Trapped air is a natural insulator and because it is trapped, convection currents cannot be set up easily. So, trapped air reduces ...