ilmakuivuminen

Ilmakuivuminen refers to the process of drying materials, typically wood, by exposing them to ambient air. This natural drying method is a common practice in forestry and woodworking for reducing the moisture content of timber before its use in construction, furniture making, or other applications. The rate of drying depends on several factors including air temperature, humidity, wind speed, and the initial moisture content of the material.

The process involves the evaporation of water from the wood's surface into the surrounding atmosphere. As water evaporates from the surface, capillary action draws more water from the interior of the wood towards the surface, continuing the drying process. Proper air circulation is crucial to prevent excessive moisture buildup and potential fungal growth or wood degradation. Wood is often stacked with spacers or stickers to allow air to flow freely between the planks.

Compared to kiln drying, which uses controlled heat and humidity, ilmakuivuminen is a slower and more energy-efficient method. However, it is also less predictable and can take significantly longer, sometimes months or even years depending on the wood thickness and environmental conditions. The final moisture content achieved through air drying is generally higher than that of kiln-dried wood, typically around 12-20%, which may be suitable for many outdoor or less demanding indoor applications. This method is favored for its low cost and minimal environmental impact.