Effective emissivity of surface

Some typical values for the effective emissivity of surface materials are listed in the table below. Also refer to the table in $epsilon_{rad}$.

Symbol
$K_{t}$
Related
$\epsilon_{rad}$
Used in
$\alpha_{st}$
Choices
IdComponentValue
1Jacket/protective cover0.90
2Conductor, unpainted0.29
3Conductor, black color painting (by brush)0.90
4Enclosure, white color painting (by brush)0.70
5Enclosure, black color painting (by spray)0.95