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The success of wood drying resides in attention to detail. Loading the drying kiln correctly, and precisely managing the airflow are two practices , together with a proper drying software, that make a drying program successful.
Here we provide you with 6 suggestions to improve your drying kiln performance:

  1. Lumber positioning: When loading lumber, it is important to arrange it in a way that the airflow does not directly hit the ends of the boards. To prevent the air from descending directly down the stack, it is recommended to have a spacious area between the lumber and the wall, approximately 1.5-1.8 meters wide.

  2. Horizontal flaps or deflectors: In the case of tunnel cells, semi-circular flaps or revolving deflectors of 300 mm width can be used to direct the air at different heights uniformly. This helps to improve the airflow circulation within the stack.

  3. Vertical flaps: These devices, with dimensions of 460 mm and 750 mm in width, are positioned on the sides to block the air and prevent it from flowing over the ends of the boards. In situations where the stacks are adjacent to one side of the cell, two flaps can be placed, one in front and one at the back, to block only the exposed side.

  4. Horizontal baffles: These double devices, usually made of rubber, are placed between the lumber and the attic to prevent the air from circulating aimlessly. They typically have heights of 500 or 1000 mm, or intermediate heights, and must touch the stacks for at least 10 cm to function correctly.

  5. Space between the stack and the attic: For effective drying of the wood, especially for softwood that requires ample airflow, it is preferable to leave a space of at least 50 cm between the stacks and the attic. This helps to ensure proper airflow circulation and uniform drying of the higher boards.

  6. Corner deflectors: These devices with a radius of 300 mm are placed on the corners of the cells to allow the air to slide and avoid the friction of the 90° angle. This improves the airflow circulation inside the cell and provides better spacing.

These suggestions will help you creating your personal best practices to achieve your desired result.Feel free to contact us for more info about this, and other curiosities about the wood drying world.