| 茶叶介电特性的研究 |
| |
| 引用本文： | 闫建伟,牛素贞,尹杰,宋勤飞,何林.茶叶介电特性的研究[J].浙江农业学报,2012,24(3):514-516. |
| |
| 作者姓名： | 闫建伟 牛素贞 尹杰 宋勤飞 何林 |
| |
| 作者单位： | 1. 贵州大学机械工程学院,贵州贵阳,550025
2. 贵州大学农学院,贵州贵阳,550025 |
| |
| 基金项目： | 贵州省科技支撑计划农业攻关项目(20103028);贵阳市科技计划项目(20114010121) |
| |
| 摘 要： | 采用TH2816B型LCR数字测试仪对茶叶的介电特性进行了研究,结果表明:在10～200kHz频率范围内,茶叶的相对介电常数随频率增加而减小,介电损耗因数随着频率的增大先减小而后略有增加；在200kHz时,当茶叶的温度为20～60℃和含水率为5.3％,7.6％,10.2％,13.8％,16.0％,20.0％,25.0％且逐渐增加时,相对介电常数和介质损耗因数均呈增大的趋势.
|
| 关 键 词： | 茶叶 介电特性 相对介电常数 介电损耗因数 含水率 |
Dielectric properties of tea leaves |
| |
| YAN Jian-wei
,
NIU Su-zhen
,
YIN Jie
,
SONG Qin-fei
,
HE Lin.Dielectric properties of tea leaves[J].Acta Agriculturae Zhejiangensis,2012,24(3):514-516. |
| |
| Authors: | YAN Jian-wei NIU Su-zhen YIN Jie SONG Qin-fei HE Lin |
| |
| Institution: | 1,*(1College of Mechanical Engineering,Guizhou University,Guiyang 550025,China;2 College of Agriculture,Guizhou University,Guiyang 550025,China) |
| |
| Abstract: | The dielectric properties of tea leaves were measured with precision TH2816B inductance capacitance resistance(LCR) meter over a temperature range of 20-60℃ and a frequency span of 10-200 kHz.The results showed that the relative dielectric constant decreased linearly with increasing frequency,but the dielectric loss factor decreased and then increased slightly.The relative dielectric constant and dielectric loss factor both increased with increasing temperature between 20℃ and 60℃ and moisture content(5.3%,7.6%,10.2%,13.8%,16.0%,20.0%,25.0%) at given 200 kHz frequency. |
| |
| Keywords: | tea leaves dielectric properties relative dielectric constant dielectric loss factor moisture content |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
