Comparsion List for all kinds of drying method
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Traditional steam drying
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Hot wind drying
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Platen Vacuum drying
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Microwave drying
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Common High frequency drying
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CNHF High frequency vacuum drying
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Drying speed
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slow
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slow
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Slightly faster
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Fast
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Fast
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Fast
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Working range
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Timber thinkness 10-55mm
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Timber thinkness 10-55mm
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Thinner timber drying is suitable for panel of floor
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Thinkness is less 20mm
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It is suitable to dry veneer,thinner timber,hard wood or thinker timber(especially for red wood) in final drying and secondary
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Loading method
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Cumbersome loading it needs put baffle between wood timbers for air convection
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Cumbersome loading it needs put baffle between wood timbers for air convection
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More cumbersome loading
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Simple Loading .but it has requirments for loading position,or the wood will be dried uniformly.
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Very simple. Directly stack timber on feed device,ni need baffle.
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Flatness after drying
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Bad,easy deformation and bend
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Bad,easy deformation and bend
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Good,Good flatness by hot platen
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Better
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Best.The timber will not happen deformation and bend under the hydraulic platen press timber tightly
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Uniform moisture content after drying
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Little
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Much
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Little
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Less
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Least
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Drying cost
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Low cost.But it is high cost for drying hard and thicker wood.
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Low cost.But it is high cost for drying hard and thicker wood.
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Higher
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Highest
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Higher.but low cost for hard wood,thicker wood and secondary drying for wood.
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Uniform moisture content after drying
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Good
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Worse than traditional steam drying
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Good
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Commom
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Bad
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Better
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Operation
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Complicated operation and works need professional training
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Complicated operation and works need professional training
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Complicated operation and works need professional training
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Simple
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Simple
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Simple
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