Timber Seasoning (Junior Cert Wood Technology): Flashcards
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14 cards from this deck
Kiln seasoning
Kiln seasoning
Drying wood in controlled environment (heat, air, humidity)
Moisture content
Moisture content
Amount of water in wood, important for strength and use
Pre-heating phase purpose
Pre-heating phase purpose
Slowly heats wood evenly without drying it yet
Kiln drying phase temp range
Kiln drying phase temp range
40°C to 70°C
Target moisture % in kiln seasoning
Target moisture % in kiln seasoning
6-10% depending on wood's use
Conditioning phase purpose
Conditioning phase purpose
Distributes moisture evenly, prevents problems
Hot air circulation function
Hot air circulation function
Heats the wood quickly
Fans function in kiln
Fans function in kiln
Spread air evenly to dry wood uniformly
Steam injectors function
Steam injectors function
Soften fibres to prevent drying issues
Vents function in kiln
Vents function in kiln
Let out wet air and bring in dry air
Kiln seasoning time duration
Kiln seasoning time duration
1-3 weeks
Main disadvantage of kiln seasoning
Main disadvantage of kiln seasoning
High energy use and running costs
Compartment kilns characteristic
Compartment kilns characteristic
Dry large batches with controlled conditions for even results
Progressive kilns characteristic
Progressive kilns characteristic
Wood moves through different zones for ongoing operation
