Temperature and power control in microwave drying

被引：72

作者：

Li, Zhenfeng ^{[1
,2
]}

Raghavan, G. S. V. ^{[1
]}

Orsat, Valerie ^{[1
]}

机构：

[1] McGill Univ, Dept Bioresource Engn, Ste Anne De Bellevue, PQ H9X 3V9, Canada

[2] NW A&F Univ, Coll Mech & Elect Engn, Yangling 712100, Shaanxi, Peoples R China

来源：

JOURNAL OF FOOD ENGINEERING | 2010年 / 97卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Temperature; Microwave; Drying; Power; Control; Apple; KINETICS; APPLE;

D O I：

10.1016/j.jfoodeng.2009.11.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A microwave drying system with the ability of automatic temperature and power control was developed for apple drying. The samples' mass and the moisture content could be obtained online. Four different drying modes were attempted with different combination of temperature and power controls. Feedback temperature control with predefined variable power profiles resulted in the best temperature control and product quality. All other modes proved their own pros and cons. The study also verified that it was difficult to maintain a constant temperature during microwave drying process when a feedback temperature control was not included. The results can be used to determine microwave power levels in microwave drying practices both with and without temperature control. (C) 2009 Elsevier Ltd. All rights reserved

引用

页码：478 / 483

页数：6

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