怀山药微波真空干燥模型的建立

Modeling of Microwave Vacuum Drying of Chinese Yam

DOI：10.3969/j.issn.1673-1689.2012.10.010

中文关键词: 怀山药 微波真空干燥 数学模型

英文关键词: Chinese yam microwave vacuum drying mathematical modeling

基金项目:河南省重点科技攻关计划项目(092102110023);河南科技大学科学研究基金项目(2008ZY040)

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中文摘要:

采用微波真空干燥设备对鲜切怀山药进行了微波真空组合干燥试验研究。通过试验值的水分比和时间的关系建立了怀山药的薄层微波真空干燥模型。结果表明:在干燥处理开始至物料含水率达到50%的范围之内,水分比与时间呈线性关系,即:水分比的预测模型为:MR=(0.103 225 3P-1.628 6×15-5 W-0.009 729 556)(1/(0.089 295 9P-1.566 473×10-5 W-0.010 239 25)+t)。通过试验值与模型预测值的比较,验证了该模型能很好的描述和预测怀山药微波真空干燥的水分比变化规律。

英文摘要:

Research on microwave vacuum drying of Chinese yam was carried out by using a microwave vacuum drying equipment.The thin layer microwave vacuum drying model of Chinese yam was established by analyzing the relationship between moisture ratio and time of experimental data.The results indicate that moisture ratio was linear before the moisture content of materials was 50% in the microwave vacuum drying.The prediction model of moisture ratio was MR=(0.103 225 3P-1.628 6×15-5W-0.009 729 556)(1/(0.089 295 9P-1.566 473×10-5W-0.010 239 25)+t).The model could describe and predict change regulation of moisture ratio very well according to the comparison of experimental values and calculated values.

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