Dissertation Tommy Vikberg

Published: 10 October 2015

Industrial Wood Drying: Airflow Distribution, Internal Heat Exchange and Moisture Content as Input and Feedback to the Process
9 October 2015
Luleå University of Technology in Skellefteå

Tommy Vikberg

Institutionen för teknikvetenskap och matematik

Research subject


Professor Mihaela Campean, Transilvania University of Brasov, Brasov, Romania

Professor Diego Elustondo, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet

From the abstract

At a sawmill, the most energy demanding process is the wood drying. The drying process also has a great impact on quality parameters determined for the boards in the final sorting and thereby affects the sales value to a great extent. The objective of the work described in this compilation thesis was to find ways to improve the industrial wood drying process through better input, feedback and process itself. As input and feedback to the drying process, ways to improve the accuracy in estimating the moisture content (MC) was investigated. For the drying process itself, an investigation of the airflow distribution in a batch kiln at several different fan speeds was performed. Potential energy savings by introducing a new kiln layout was also investigated.