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Wood drying (also seasoning lumber or wood seasoning) reduces the moisture content of wood before its use. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more traditional method. There are two main reasons for drying wood: Woodworking
Vacuum drying is the mass transfer operation in which the moisture present in a substance, usually a wet solid, is removed by means of creating a vacuum. In chemical processing industries like food processing , pharmacology, agriculture, and textiles, drying is an essential unit operation to remove moisture. [ 1 ]
Most waterlogged wood is such that decayed wood cells in the material fill with water. Depending on the wood type and how long the wood has been in water, removal of the water from the cells too rapidly (in the form of natural drying or other) could apply major stress to the cell walls and cause them to collapse.
Drying and polymerization: The soaked wood is dried in vacuum dryers through direct heating with steam. Due to the high boiling point of furfuryl alcohol (170 °C), it is possible to first dry the water from the wood and then carry out polymerization at a second higher temperature stage.
These processes autoclave the treated wood, subjecting it to pressure and heat, along with nitrogen or water vapour to control drying in a staged treatment process ranging from 24 to 48 hours at temperatures of 180 °C to 230 °C depending on timber species. These processes increase the durability, dimensional stability and hardness of the ...
"This vacuum does it all, hardwood, rugs and more," raved a third. "It's easy to empty and easy to clean the filter, and the attachments are amazing. ... This No. 1 bestselling kit can minimize ...
But if you really want to save time, try a vacuum-mop combo. The very busy Martha Stewart recently named her Bissell Crosswave OmniForce Wet Dry Vacuum "the best new home appliance I have received."
Dielectric drying (radiofrequency or microwaves being absorbed inside the material) is the focus of intense research nowadays. It may be used to assist air drying or vacuum drying. Researchers have found that microwave finish drying speeds up the otherwise very low drying rate at the end of the classical drying methods.
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