Wood contains a certain a↔™mount of water. The moist∑∑ure content in wood varies with tree species, ag™→‌¶e and cutting season.✘$ In order to ensure the quality of wood an÷≈×♥d wood products and prolong t"φ±heir service life, it is necessary to take appr•±opriate measures to reduce the moisture con↓★ε®tent (moisture content) of wood to a certai≤₹±"n extent. In order to reduc®→£e the moisture content ≤✘•of the wood, the temperature of the wood muαπσst be increased, so tha™>Ω♣t the moisture in the woo ₹¥d evaporates and moves ♠"outwards. In a certain air flow, the water quick&★ly leaves the wood to♣ 'σ achieve the purpose of drying. In∞←¶© order to ensure the qual‍↔§₹ity of dry wood, it is necessa®'®ry to control the humidity of the drying mediu&♦m (such as the usual humid air)σ ↓ to obtain a fast and high-quality d䮶≈ry wood effect. This ₹‍process is called wood drying. Since th'‍¶¶e above method is a method of convective heat t☆∑ransfer from the outside of the wood, it isπ♦← also called convectiv"φe drying.