Microwave is a kind of electromagnetic wave. The microwave (frequency: 2 450 MHz) used in this experiment is decimeter band, and the band code is LS. Electromagnetic waves have wave-particle duality. According to quantum theory, the energy of microwave radiation is discontinuous, consisting of one “energetic electron”, each quantity.
microwave drying equipment
The energy of the sub is E=hf, where h=6.626 * 10-34 J. S is the Planck constant and F is the frequency. This quantum effect should be taken into account when microwave drying.
Wood is a kind of biological material composed of macromolecule material and low molecular substance. Macromolecular materials consist of cellulose, hemicellulose and lignin, and low molecular substances consist of wood extracts (esters and glycerol, etc.) and ash powder. Usually wood contains a certain amount of moisture. Wood with a certain amount of moisture undergoes energy conversion under the action of microwave. Wood with high, low and water molecules absorb microwave energy while the temperature rises rapidly. Water molecules get rid of adsorption and bondage and gradually leave the wood. Wood is dried.
1.2 characteristics of wood microwave drying
Timeliness, integrity, selectivity and high efficiency of wood microwave heating have been recognized. Whether there is a “positive heat source” has not been decided, and the conditions for its formation and stability have not been studied in detail.
The energy of the sub is E=hf, where h=6.626 * 10-34 J. S is the Planck constant and F is the frequency. This quantum effect should be taken into account when microwave drying.
Wood is a kind of biological material composed of macromolecule material and low molecular substance. Macromolecular materials consist of cellulose, hemicellulose and lignin, and low molecular substances consist of wood extracts (esters and glycerol, etc.) and ash powder. Usually wood contains a certain amount of moisture. Wood with a certain amount of moisture undergoes energy conversion under the action of microwave. Wood with high, low and water molecules absorb microwave energy while the temperature rises rapidly. Water molecules get rid of adsorption and bondage and gradually leave the wood. Wood is dried.
1.2 characteristics of wood microwave drying
Timeliness, integrity, selectivity and high efficiency of wood microwave heating have been recognized. Whether there is a “positive heat source” has not been decided, and the conditions for its formation and stability have not been studied in detail.
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