# Total Heat Transfer

Written by Jerry Ratzlaff on . Posted in Thermodynamics

### Total Heat Transfer Formula

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

Where:

$$\large{ Q }$$ = total heat transfer (heat put into system or heat lost)

$$\large{ A }$$ = surface area where heat is transfered

$$\large{ h }$$ = heat transfer coefficient

$$\large{ T_s }$$ = surface temperature

$$\large{ T_{\infty} }$$ = approach fluid temperature