[1]张雪飞,刘显茜.胡萝卜切片热风干燥对流传质系数的估算[J].机械与电子,2015,(11):17-20.
　ZHANG Xuefei,LIU Xianxi.Estimation of the Mass Transfer Coefficient During Hot-air-drying of Carrot Section[J].Machinery & Electronics,2015,(11):17-20.
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胡萝卜切片热风干燥对流传质系数的估算
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《机械与电子》[ISSN:1001-2257/CN:52-1052/TH]

卷:
期数:
2015年11期
页码:
17-20
栏目:
设计与研究
出版日期:
2015-11-25

文章信息/Info

Title:
Estimation of the Mass Transfer Coefficient During Hot-air-drying of Carrot Section
文章编号:
1001-2257(2015)11-0017-04
作者:
张雪飞; 刘显茜
(昆明理工大学机电工程学院,云南 昆明 650500)
Author(s):
ZHANG Xuefei; LIU Xianxi
(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)
关键词:
胡萝卜;  对流传质系数;  热风干燥;  菲克定律
Keywords:
carrot;  mass transfer coefficient;  hot-air-drying;  Fick theorem
分类号:
TS205
文献标志码:
A
摘要:
将逆数值方法应用于物性测试,通过建立胡萝卜的内部水分扩散模型,把反映物料干燥过程动态特性的实验含水率曲线与物料颗粒内部的水分扩散相结合,确定胡萝卜在脱水过程中的对流传质系数。同时研究了厚度、半径、干燥温度和相对湿度对胡萝卜切片对流传质系数的影响。结果表明,对流传质系数不是一个常数。对流传质系数随厚度和干燥温度的增大而增大; 随相对湿度的减小而减小; 半径的增大对其无明显影响。
Abstract:
This paper has applied inverse numerical method to the estimation of physical property. By building an internal moisture diffusion model and selecting connective boundary conditions, the moisture diffusion inside the material has been organically combined with the drying experimental curves to determine the mass transfer coefficient. At the same time, the impact of thickness, radius, drying temperature and relative humidity on the mass transfer coefficient of carrot section is studied. The results show the mass transfer is not a constant. The mass transfer coefficient had an increased trend followed by thickness and temperature, and decreased with the decrease of relative humidity; and there is no obvious effect from the increases of the radius.

参考文献/References:

[1] Liu Xianxi,Chen Junruo,Hou Hongying.Theoretical analysis of water diffusivity estimated by Crank'sequation[J].Chemical Engineering and Processing,2012,55:24-28.
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备注/Memo

备注/Memo:
收稿日期:2015-08-21
基金项目:云南省自然科学基金(2011FZ064); 国家自然科学基金资助项目(51566006)
作者简介:张雪飞(1988-),女,山西大同人,硕士,主要从事热风干燥对流传质系数的估算及可靠性的分析研究; 刘显茜(1972-),男,河南延津人,副教授,硕士研究生导师,主要从事多孔材料传热传质耦合机理及数值模拟研究,通信作者。
更新日期/Last Update: 2019-11-25