荔枝热泵干燥特性及干燥数学模型

doi:10.7506/spkx1002-6630-201311023

食品科学 ›› 2013, Vol. 34 ›› Issue (11): 104-108.doi: 10.7506/spkx1002-6630-201311023

荔枝热泵干燥特性及干燥数学模型

杨韦杰，唐道邦，徐玉娟，吴继军，肖更生

1.广东省农业科学院蚕业与农产品加工研究所，广东省农产品加工重点实验室，广东广州 510610；
2. 江西农业大学生物科学与工程学院，江西南昌 330045

收稿日期:2012-03-13 修回日期:2013-04-27 出版日期:2013-06-15 发布日期:2013-06-03
通讯作者: 杨韦杰 E-mail:wjyang2004@163.com
基金资助:
葡萄酒;葡萄酒;农业部公益性行业专项

Drying Characteristics and Mathematical Modeling for Heat Pump Drying of Litchi

YANG Wei-jie，TANG Dao-bang，XU Yu-juan，WU Ji-jun，XIAO Geng-sheng

1. Guangdong Key Laboratory of Agricultural Product Processing, Sericulture and Farm Product Processing Research Institute,Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China；2. College of Bioscience and Bioengineering,Jiangxi Agricultural University, Nanchang 330045, China

Received:2012-03-13 Revised:2013-04-27 Online:2013-06-15 Published:2013-06-03

摘要/Abstract

摘要：

为探索荔枝热泵干燥特性，研究55、60、65℃干燥温度及0.4、1.0m/s风速条件下整果荔枝热泵干燥曲线和干燥速率随时间变化曲线的相关规律，通过水分比的变化拟合荔枝热泵干燥数学模型。结果表明：干燥温度对荔枝整果干燥速率影响较大，干燥温度越高，干燥用时越短；风速对荔枝干制加工时间的影响较小；降速干燥阶段为荔枝热泵干燥过程的主要阶段；Midilli模型能较好模拟整果荔枝热泵干燥过程，模型预测值与实验值比较吻合，可以用来描述和预测荔枝的热泵干燥进程。

关键词: 荔枝, 热泵干燥, 数学模型, 干燥曲线, 干燥速率

Abstract:

The heat pump drying characteristics of whole litchis were investigated. Drying experiments were carried out at
different levels of temperature (55, 60 ℃ and 65 ℃) and air velocity (0.4 m/s and 1.0 m/s). Different mathematical models
were developed to test the drying behavior of litchis. The results showed that temperature affected the drying rate of whole
litchis: the higher the drying temperature, the shorter the drying time. Minimum influence of air velocity was observed on the
processing time of litchis. The falling-rate period was a key stage in the heat pump drying process of litchis. The proposed
Midilli model fitted very well the heat pump drying process of whole litchis. There was good agreement between the
predicted and experimental values, indicating the reliability of this model.

Key words: litchi, heat pump drying, mathematical modeling, drying curve, drying rate

中图分类号:

TS255.42

杨韦杰，唐道邦，徐玉娟，吴继军，肖更生. 荔枝热泵干燥特性及干燥数学模型[J]. 食品科学, 2013, 34(11): 104-108.

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荔枝热泵干燥特性及干燥数学模型

Drying Characteristics and Mathematical Modeling for Heat Pump Drying of Litchi

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