在收缩和非收缩条件下,对胡萝卜的对流干燥特征进行了理论分析.结果表明,干燥速率是试样几何形状、尺寸以及热空气温度、风速、相对湿度的函数.整个干燥过程应划分为外部干燥条件控制的第一干燥阶段和物料内部水分扩散控制的第二干燥阶段.而基于经典干燥理论的恒速干燥阶段和降速干燥阶段的划分,只是特定形状和材质的物料在一定干燥条件下才出现的干燥现象.物科外层单元水分活度可以作为判别物科干燥过程是处于第一干燥阶段还是第二干燥阶段的判断依据,是表征物料干燥特性的特征参数.
参考文献
| [1] | 刘显茜,陈君若,刘美红,刘国红,张赛.胡萝卜对流干燥过程理论分析--临界水分质量比[J].化学工程,2012(09):34-37,47. |
| [2] | Ahmet Kaya;Orhan Aydin;Cevdet Demirtas .Experimental and theoretical analysis of drying carrots[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2009(1/3):285-295. |
| [3] | Sablani SS;Kasapis S;Rahman MS;Al-Jabri A;Al-Habsi N .Sorption isotherms and the state diagram for evaluating stability criteria of abalone[J].Food Research International,2004(10):915-924. |
| [4] | Zhengyong Yan;Maria J. Sousa-Gallagher;Fernanda A.R. Oliveira .Sorption isotherms and moisture sorption hysteresis of intermediate moisture content banana[J].Journal of food engineering,2008(3):342-348. |
| [5] | Sorption Isotherm And State Diagram Of Grapefruit As A Tool To Improve Product Processing And Stability[J].Journal of food engineering,2009(1):52-58. |
| [6] | Ramesh MN .Moisture transfer properties of cooked rice during drying[J].LWT-Food Science & Technology,2003(2):245-255. |
| [7] | Djendoubi, N.;Boudhrioua, N.;Bonazzi, C.;Kechaou, N. .Drying of sardine muscles: experimental and mathematical investigations.[J].Food and Bioproducts Processing. Transactions of the Institution of Chemical Engineers, Part C,2009(2):115-123. |
| [8] | Jun Ho Lee;Min Ji Lee .Effect of drying method on the moisture sorption isotherms for Inonotus obliquus mushroom.[J].LWT-Food Science & Technology,2008(8):1478-1484. |
| [9] | Antonio V G;Margarita M;Luis P D et al.Effective moisturediffusivity determination and mathematical modeling of the drying curves of the olive-waste cake[J].Bioresour Techn,2010,101(19):7265. |
| [10] | Kar S;Chen X D;Adhikari B P et al.The impact of various drying kinetics models on the prediction of sample temperature time and moisture content time profiles during moisture removal from stratum eomeum[J].Chemical engineering Research and Design,2009,87(05):739. |
| [11] | Witinantakit K;Prachayawarakom S;Nathakaranakule A et al.Paddying drying using adsorption technique:Experiments and simulation[J].Dry Techn,2006,24(05):609. |
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