# Heat Transfer by Conduction through a Plane Wall

### Heat Transfer by Conduction through a Plane Wall Formula

\(\large{ Q_c = \frac {- k \; A \; \left( T_2 \;-\; T_1 \right) } { l } }\)

Where:

\(\large{ Q_c }\) = heat transfer by conduction

\(\large{ l }\) = thickness of the material

\(\large{ A }\) = area cross section

\(\large{ T_1 }\) = temperature of one surface of the wall

\(\large{ T_2 }\) = temperature of the other surface of the wall

\(\large{ k }\) = thermal conductivity