5 Photo: Martinsons. Jonas Westling Flexibility and quality. This type of kiln gives great flexibility as regards type of wood and dimensions. A forklift-fed batch kiln requires relatively little space and is a good choice where achieving the desired quality at the lowest investment cost is a major requirement. Combined with our market-leading control systems, our batch kilns provide the right conditions for satisfying ever stricter requirements in respect of processing quality and customisation. Control with great choice. With drying requirement as the starting point, we offer the following choices: schedule control, model control, power control, adaptive simulator control and adaptive temperature drop control. To these can be added Valutec’s leading simulator technology. This has in-built intelligence that, in a simple and user-friendly way, radically shortens the time necessary for optimising a drying process. Based on industry-leading R & D. The drying facility is built in stainless steel and air circulation is controlled by axial fans. All sensitive equipment is located in the building’s ventilated “cold attic”. Leading research and development, both Nordic and international, is the basis of all our design solutions (see Technical solutions, pages 10 – 11). Kilns can advantageously be fitted with heat recovery systems. Volume and target moisture content. Valutec’s forklift-fed batch kilns are particularly adapted for planks, but can also be used for boards. Batch volume can vary from 50 to 450 m3 (21–190 MBF) and target moisture content from 5 – 20%. Just as all our other batch kilns, the forklift-fed batch kiln ensures precise control of the climate throughout the entire drying process. This opens the possibility of drying that, with minimum risk of checking, takes the timber all the way to exactly the desired target moisture content. PRINCIP Forklift trucks load and unload the kiln from a single side. Axial fans located on a deck above the timber load blow circulation air between the piles (in the timber’s longitudinal direction). Lamella-type heat coils give maximum heat transfer. After initial equalisation of moisture content, the heating level is adapted to how the moisture content is changing. Making use of the pressure difference, the moist air is evacuated via two ducts on either side of the load.
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