Changes of particle size classification of wood chips according to the new standard rules for domestic use

In 2014, the European standards of solid biofuel classi cation have been replaced by the International ISO standards. Considering wood chips, the main change concerns the definition of particle size distribution classes. This change in the quality, as a consequence of the new standard rules, has been quantified using 206 wood chips samples. The results show an improved classification of particle size distribution of woodchips with a reduction of not classified samples from 40 to 14% and an increase in samples belonging to the dimensionally smaller particle size classes.