INTENSIFICATION OF BEECH WOOD DRYING PROCESS USING MICROWAVES

被引：5

作者：

Rajewska, Kinga ^{[1
]}

Smoczkiewicz-Wojciechowska, Anna ^{[2
]}

Majka, Jerzy ^{[3
]}

机构：

[1] Poznan Univ Tech, Fac Chem Technol, Ul Berdychowo 4, PL-60965 Poznan, Poland

[2] Poznan Univ Life Sci, Fac Land Reclamat & Environm Engn, Ul Piatkowska 94e, PL-60649 Poznan, Poland

[3] Poznan Univ Life Sci, Fac Wood Technol, Ul Wojska Polskiego 38-42, PL-61627 Poznan, Poland

来源：

CHEMICAL AND PROCESS ENGINEERING-INZYNIERIA CHEMICZNA I PROCESOWA | 2019年 / 40卷 / 02期

关键词：

beech wood; microwave drying; strength tests; nonlinear regression; TEMPERATURE;

D O I：

10.24425/cpe.2019.126110

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper analyses the influence of the applied microwave power output on the intensification of drying in the context of process kinetics and product quality. The study involved testing samples of beech wood (Fagus sylvatica L.). Wood samples were dried in the microwave chamber at: 168 W, 210 W, 273 W, 336 W and 378 W power output level. For comparison, wood was dried convectively at 40 degrees C and 87% air relative humidity. The analysis of drying process kinetics involved nonlinear regression employing the Gompertz model. Dried samples were subjected to static bending tests in order to specify the influence of the applied microwave power on modulus of elasticity (MOE) and modulus of rapture (MOR). The obtained correlations of results were verified statistically. Analysis of drying kinetics, strength test results and Tukey's test showed that the applied microwaves of a relatively low level significantly shortened the drying time, but did not cause a reduction in the final quality of dried wood, compared with conventional drying.

引用

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页码：179 / 187

页数：9

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