魔芋片单层热风干燥特性的试验研究  

An Experimental Study on Hot Air Drying Properties for Thin Layer-sliced Konjak

作　　者：邱凌[1] 仇农学[1] 薛惠岚[1] 吴万兴 

机构地区：[1]西北农业大学干旱半干旱研究中心,机械与电子工程学院,陕西省林业科学研究所

出　　处：《西北农业大学学报》1995年第5期78-82,共5页Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)

基　　金：林业部"八五"攻关项目

摘　　要：利用自行设计的循环式热风干燥装置，在风温５０～９０℃，风速０．５～１．５ｍ／ｓ，片厚５～１３ｍｍ三因素五水平二次正文旋转组合优化试验设计的２３种工况下，模拟魔芋片单层热风干燥过程，研究了三因素对魔芋片干燥特性和效率的影响规律，探析了干燥机理和效应原因，得到干燥速率数学模型。统计检验结果表明，所得模型的置信度大于９９％，可定量描述干燥速率随风温、风速、片厚的变化规律。Simulated hot air drying tests for thin layer-sliced konjak were per-formed by using a self-designed recycle hot air drying device under the conditions of50℃～90℃ for air temperature,0.5～1.5m/s for airflow velocity and 5～13 mm forthickness of the sliced konjak. The effect of the air temperature,the airflow speed. theslice thickness and the drying rate was studied in particular. From an analysis of thedrying mechanism and the effect of different factors on drying process, the mathematicmodel of drying rate was obtained. The results concluded from the monte carlo methodshowed that the confidence level of the model was higher than 99%. So it could quantita-tively describe the changing rules of the drying rate with air temperature, airflow veloci-ty and slice thickness.

关 键 词：魔芋 干燥特性 干燥速率 魔芋片 热风干燥 

分 类 号：TS255.36[轻工技术与工程—农产品加工及贮藏工程]