Heat Transfer Coefficient

Heat transfer coefficient, abbreviated as h, also called film coefficient or film effectiveness, is the convective heat transfer between a solid surface and the fluid around it.

 

Heat Transfer Coefficient formula

\(\large{ h = \frac { Q" }{\Delta T} }\)

Where:

Units	English	Metric
\(\large{ h }\) = heat transfer coefficient	\(\large{\frac{Btu}{hr-ft^2-F}}\)	\(\large{\frac{W}{m^2-K}}\)
\(\large{ Q" }\) = heat flux	\(\large{\frac{Btu}{hr-ft^2}}\)	\(\large{\frac{W}{m^2}}\)
\(\large{ \Delta T }\) = temperature differential between the solid surface and surrounding area	\(\large{F}\)	\(\large{K}\)

 

Related Heat Transfer Coefficient formula

\(\large{ h=\frac{ Nu \; k }{ l_c  }   }\)

(Nusselt number)

Where:

\(\large{ h }\) = heat transfer coefficient

\(\large{ l_c }\) = characteristic length

\(\large{ Nu }\) = Nusselt number

\(\large{ k }\) = thermal conductivity