# Heat Transfer Coefficient of a Pipe Wall

Written by Jerry Ratzlaff on . Posted in Thermodynamics

## Heat Transfer Coefficient of a Pipe Wall

The resistance to the flow of heat by the pipe wall material can be expressed by the heat transfer coefficient of the pipe wall.

### Heat Transfer Coefficient of Pipe Wall FormulA

$$\large{ p_{wall} = \frac { 2k } { d_i \; \cdot \; ln \left( \frac { p_o } { P_i } \right) } }$$

Where:

$$\large{ h_{wall} }$$ = heat transfer coefficient of wall

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

$$\large{ ln }$$ = natural logarithm

$$\large{ p_i }$$ = pipe ID

$$\large{ p_o }$$ = pipe OD