# Heat Transfer by Conduction

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Heat transfer by conduction ( $$Q_c$$ ) (also called heat conduction, heat radiation, or heat transfer) is the flow of heat between two objects having different temperatures that are in contact with each other.

### Heat Transfer by Conduction Formula

(Eq. 1)  $$\large{ Q_c = \frac { kA \Delta T t } {d} }$$

(Eq. 2)  $$\large{ Q_c = \frac { kA \left( T_h \;-\; T_c \right) t } {d} }$$

Where:

$$\large{ Q_c }$$ = heat transfer by conduction

$$\large{ A }$$ = area cross section

$$\large{ T_c }$$ = cooler temperature

$$\large{ T_h }$$ = higher temperature

$$\large{ \Delta T }$$ = temperature differential

$$\large{ t }$$ = time taken

$$\large{ k }$$ = thermal conductivity

$$\large{ d }$$ = thickness of the material