Total Heat Transfer

Total heat transfer, abbreviated as Q, is the heat put into a system or heat lost from a system.

 

Total Heat Transfer Formula
\(\large{ Q =  h \; A \;  \left( T_s \;-\; T_{\infty} \right)  }\)
Symbol	English	Metric
\(\large{ Q }\) = total heat transfer	\(\large{\frac{Btu}{hr}}\)	\(\large{W}\)
\(\large{ A }\) = surface area where heat is transfered	\(\large{ft^2}\)	\(\large{m^2}\)
\(\large{ h }\) = heat transfer coefficient	\(\large{\frac{Btu}{hr-ft^2-F}}\)	\(\large{\frac{W}{m^2-K}}\)
\(\large{ T_s }\) = surface temperature	\(\large{F}\)	\(\large{K}\)
\(\large{ T_{\infty} }\) = approach fluid temperature	\(\large{F}\)	\(\large{K}\)