The paper proposes the use of microwave irradiation to lower the initial moisture content of wood chips. The study involved willow and fir chips fractionated by means of a sieve separator and unfractionated ash chips. The wood chips were exposed to a constant microwave power of 800 W for 30 s, 60 s, 120 s and 180 s. The chips were weighed before and after irradiation to measure loss of moisture. It was found that the decline in moisture content increased with wood chip size for a given irradiation time and microwave power. The initial moisture content of wood chips was not found to significantly affect loss of moisture as the drying rates of wood chips with higher and lower moisture content exposed to microwaves were not statistically different. The results showed that irradiation intensity increased with the time of exposure to microwaves and unit radiant energy per unit of evaporated moisture decreased with increasing wood chip size in the 3.15–31.50 mm range.

中文翻译：

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微波辐射对不同树种获得的各种木屑级分水分含量的影响

该论文提出使用微波辐射来降低木片的初始水分含量。该研究涉及通过筛分离器和未分级的灰屑分级分离的柳树和冷杉木屑。将木片暴露于800 W的恒定微波功率下30 s，60 s，120 s和180 s。在辐照之前和之后称重木屑以测量水分损失。发现在给定的照射时间和微波功率下，水分含量的下降随木片尺寸的增加而增加。未发现木片的初始水分含量会显着影响水分的损失，因为暴露于微波下的木片的较高和较低水分的干燥速率没有统计学差异。