Total Heat Transfer

Written by Jerry Ratzlaff on . Posted in Thermodynamics

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

Total Heat Transfer Formula

 $$\large{ Q = h \; A \; \left( T_s \;-\; T_{\infty} \right) }$$

Where:

 Units 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 $$\large{F}$$ $$\large{K}$$