Heat Flux

Heat flux, abbreviated as Q", also called thermal flux, is the heat flow rate transfer through a given surface, per unit surface.

 

Heat Flux formula
\(\large{ Q" = \frac { Q_f } { A }  }\)
Symbol	English	Metric
\(\large{ Q" }\) = heat flux	\(\large{\frac{Btu}{hr-ft^2}}\)	\(\large{\frac{W}{m^2}}\)
\(\large{ A }\) = area	\(\large{ft^2}\)	\(\large{m^2}\)
\(\large{ Q_f }\) = heat flow rate	\(\large{\frac{Btu}{hr}}\)	\(\large{W}\)