安徽农业科学2009，Vol.37Issue(31)：15414-15416,3.
苹果片热泵干燥工艺试验研究
Experimental Study on the Heatpump Drying Technology of Apple Slices
摘要
Abstract
[Objective] The purpose of the study was to optimize the technological parameters of drying apple slices with self-made heat-pump drying equipment. [ Method ] The apple slices were dehydrated and dried with self-made heat-pump drying equipment, the influences of the temperature of drying medium, forced filling rate and slice thickness on drying rate and power consumption were discussed through single factor experiments and 3-factor and 3-level orthogonal test. [ Result] Under 30～40 ℃, in the same drying time, as the temperature of drying medium was increased, the drying rate was accelerated obviously. When the forced filling rate was 1-2 kg/m~2 , as the forced filling rate was increased, the drying time was increased and the drying rate was decreased obviously. In the thickness range of 3 -5 mm, as the slice thickness was increased , the drying time was increased and the drying rate was decreased obviously. The variance analysis showed that the temperature of drying medium and forced filling rate were the main influencing factors of drying rate. The results of multiple comparison indicated that the optimum technological combination was as follows: the temperature of drying medium was 30℃, the forced filling rate was IS kg and the slice thickness was 3, 4 or 5 mm. [ Conclusion ] The heat-pump drying technology enhanced drying efficiency and reduced power consumption.关键词
苹果片/热泵干燥/工艺Key words
Apple slice/ Heat-pump drying/ Technology分类
轻工纺织引用本文复制引用
张海红,刘贵珊..苹果片热泵干燥工艺试验研究[J].安徽农业科学,2009,37(31):15414-15416,3.基金项目
2007年度宁夏高等学校科学研究项目 （）
"热泵干燥系统的研究及应用"基金资助项目编号NXGJ20070302. （）
