Heat Transfer
September 2nd, 2010
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How heat transfer affected by the rate of convection?
I would like to see an equation for heat transfer in terms speed. If air flow rate doubles, and everything else remains the same as the dual heat transfer?
It depends on the amount of turbulence, Feynman called "the greatest unsolved problem of classical physics." In a purely laminar flow there is no mixing between the layers where heat transfer is mainly drivers (see ref.). However, a higher speed tends to lead to rate increases in the average temperature of the fluid adjacent to the intersection closest temperature input and transfer as sqrt (v). You can check with the calculator Ref page. The conclusion seems to be that while there is an increased heat flow faster, the speed setting is defined for the hood.
Convection, Conduction, and Radiation
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