Where moisture content is below 25%, approximate thermal conductivity k across the grain can be calculated with a linear equation of the form:
Where Gx is specific gravity based on oven dry mass and volume at moisture content x (%) and A, B, and C are constants.
For Gx > 0.3, temperatures around 24ºC and x < 25% MC, the values of the constants are as follows:
- A = 0.01864
- B = 0.1941
- C = 0.004064 (k in W m-1 K-1)
Gx = 0.65