From: Effect of wood biomass components on self-heating
Sample
Higher heating value (MJ/kg)
Ash content (%d.b.)
Sawdust
19.83 ± 0.33
0.35 ± 0.01
Bark chips
19.05 ± 0.10
2.46 ± 0.18
Washed bark chips
–
2.09 ± 0.10
Torrefied bark chips
21.95 ± 0.13
4.23 ± 0.38