Influence of tree species and machine settings on chip quality and specific energy consumption of a stationary drum chipper

Abstract Chipper fine tuning, i. e. the selection of suitable feedstocks and machine settings for comminution, might help to optimize wood chip production in terms of chip quality and energy efficiency. A total of 46 wood chip samples were produced with an electrically powered stationary drum chipper. Feedstocks derived from small diameter stem wood (O