Absrtact: This paper briefly describes the development of wood and wood products drying technology, briefly introduces the principles and development status of various drying technologies, finds out the shortcomings of wood microwave drying equipment, creatively puts forward atmospheric freeze drying technology under low temperature environment, and introduces the origin of atmospheric freeze drying technology. Physiology and classification have opened up a new idea for wood drying technology in the direction of low temperature.
Key words: wood microwave drying; low temperature; atmospheric pressure; freezing
Drying is an indispensable link in the process of wood products processing. Wood drying refers to the process of reducing the moisture content of wood to the specified value range by using the difference between the water vapor pressure inside and outside the wood in the heating process. This process occupies an important position in the field of wood processing and manufacturing, and is also one of the processes with the highest technical content.
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