硅酸铝/氧化锆纤维板在微波加热中透波性研究  

Wave-transparent property of aluminosilicate / zirconia fiberboard in microwave heating

作　　者：尚小标 陈君若[1] 张伟峰[1] 彭金辉[2,3] 陈华[2,3] 郭胜惠[2,3] 陈菓[2,3] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650093 [2]昆明理工大学非常规冶金省部共建教育部重点实验室,云南昆明650093 [3]昆明理工大学微波能工程应用及装备技术国家地方联合工程实验室,云南昆明650093

出　　处：《化学工程》2014年第5期35-38,共4页Chemical Engineering(China)

基　　金：国家高技术研究发展计划(863计划)项目(2013AA064003);国家国际科技合作专项资助(2012DFA70570);国家自然科学基金青年科学基金资助项目(51304097);云南省国际合作项目资助(2011IA004)

摘　　要：为了研究微波加热过程中温度、厚度对硅酸铝/氧化锆纤维板保温层透波性能的影响,以期设计出在整个微波加热过程中都具有良好透波性能的保温层,利用通过单层平板内电磁波传播的理论机制和计算模拟技术,分析了保温层厚度和温度变化对硅酸铝/氧化锆纤维板透波性能影响的规律。同时从透波性能的角度,提出了硅酸铝/氧化锆纤维板保温层在微波加热中厚度选择的基本原则。研究结果表明:20℃时,硅酸铝纤维板的功率透过系数随厚度增加呈波动状态变化,存在透波峰;随着温度的升高,这种波动状逐渐消失,近似呈线性递减,1 300℃时,0.1 m厚度的硅酸铝纤维透波率仅为0.62。氧化锆纤维板在20,200,500℃时,功率透过系数随着厚度的增加呈明显的波动变化,厚度为0.04,0.08 m时,功率透过系数曲线出现透波峰。该研究成果有助于微波高温加热设备的设计,微波加热工艺参数的优化以及微波能利用率的提高。In order to research the effects of temperature and thickness on the transmission performance of aluminosilicate / zirconia fiberboard insulation layer, a computer simulation was carried out according to the electromagnetic wave transmission. The calculation results well display the relationships among the values of thickness of the aluminosilicate / zirconia fiberboard,temperature and microwave transmission performance. The preferred thickness was also investigated and discussed. It indicates that a series of transmission peaks appears with the thickness increasing at aluminosilicate 20 ℃. The exponential decreasing was replaced by linear decreasing with temperature rise. The power permeated coefficient reaches 0. 62 at 1 300 ℃ as the aluminosilicate fiberboard has a thickness of 0. 1 m. A series of transmission peaks appears with the thickness increases at 20,200,500 ℃. The zirconia fiberboard presents an excellent transmission performance with the thickness of 0. 04,0. 08 m. The research results are helpful to design the microwave high temperature heating equipments,optimize the parameters of microwave heating process,and improve the utilization of microwave energy.

关 键 词：硅酸铝纤维板 氧化锆纤维板 保温层 微波加热 透波性能 复介电常数 

分 类 号：TS653.6[轻工技术与工程]