| 多孔介质微波加热厚度的确定 |
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| 引用本文： | 牟群英,李贤军,张璧光.多孔介质微波加热厚度的确定[J].干燥技术与设备,2005,3(4):184-186. |
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| 作者姓名： | 牟群英 李贤军 张璧光 |
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| 作者单位： | [1]中南林学院理学院,湖南株州412006 [2]中南林学院工业学院,湖南长沙410004 [3]北京林业大学材料科学与技术学院,北京100083 |
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| 摘 要： | 简述了微波加热的机理，以湿木材为研究对象，通过理论计算确定了微波在木材中的穿透深度。计算表明：随着木材含水率和微波工作频率的增加，微波在木材中的穿透深度减小；当用频率为915MHz和2450MHz的微波加热或干燥具有高含水率的多孔介质时，多孔介质的最大厚度应分别控制在16cm和6cm以内。
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| 关 键 词： | 微波加热 木材 多孔介质 厚度 |
| 文章编号： | 1727-3080（2005）04-0184-03 |
| 收稿时间： | 2005-09-25 |
Research on heated thickness of a lumber by microwave |
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| Authors: | MOU Qun-ying LI Xian-jun ZHANG Bi-guang |
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| Affiliation: | 1. Science School of Central South Fore stry University, Zhuzhou 412006; 2.Industry School of Central South Forestry University, Changsha 410004; 3.Material Science and technology school of Beijing Forestry University,Beijing 100083 ,China |
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| Abstract: | In this paper, the mechanism of microwave heating and the influencing factors to the dielectric properties of wood were introduced. The calculating method for the penetrating depth of microwave through wood was developed. The calculated result shows that the penetrating depth decreases with the increasing wood moisture content and microwave frequency. When wood with a high moisture content is heated by microwave radiation under the frequencies of 915 MHz and 2450 MHz, the maximum penetrating thickness will reach to about 16 cm and 6 cm respectively. |
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| Keywords: | microwave heating wood porous medium thickness |
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