Wood Kiln Drying Time Chart

This adage obviously only takes a few of the aforementioned variables into account but it s at least a rough starting point in understanding the time investment required in order to properly air dry lumber.

Wood kiln drying time chart.

In the original dry kiln operator s manual written in the early 1950s some species were not used in high quality products. The kiln is nearly air tight and the de humidifier drains through the floor. See table 1 for actual dimen sions presumably because of the lack of data these values are only ranges of time estimates. 1 since 1977 nyle has been building the world s most energy efficient lumber dryers.

Drying times and kilns the traditional rule of thumb for air drying lumber is to allow one year of drying time per inch of wood thickness. Newer wood drying technologies have included the use of reduced atmospheric pressure to attempt to speed up the drying process. In the 1950s seldom was this lower grade lumber kiln dried. With the insulation we can use the kiln in the winter in ohio as the returned heat from the de humidifier and the fan motor are sufficient or we can add a small heater.

As a result the kiln schedules were too severe. In 1949 a chicago company introduced a wood drying kiln that used infrared lamps that they claimed reduced the standard drying time from 14 days to 45 minutes. We pioneered the development of dehumidification drying as a practical economical drying method. Wood and softwood species.