Newton's Law of Cooling

At contact surfaces between a fluid and a solid wall, there is always a thin layer of fluid through which the heat is transferred by conduction. Whenever there is an appreciable movement of the fluid, conduction heat transfer in fluid may be neglected compared with convection heat transfer. The heat transfer from the solid surface to the fluid can be described by Newton's law of cooling. It states that the heat transfer, dQ/dt, from a solid surface of area A, at a temperature Tw, to a fluid of temperature T, is:

where is the heat transfer coefficient. Related topics:
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