Determination of drying constants and their dependence on drying air parameters for thin layer onion drying

被引：15
|
作者：
Sawhney, RL
Sarsavadia, PN
Pangavhane, DR
Singh, SP
机构：
[1] Devi Ahilya Univ, Sch Energy & Environm Studies, Indore 452001, Madhya Pradesh, India
[2] Gujarat Agr Univ, MRRS, Nawagam 387540, Gujarat, India
来源：
DRYING TECHNOLOGY | 1999年 / 17卷 / 1-2期
关键词：
mathematical model; moisture ratio; nonlinear regression; thin layer drying apparatus;
D O I：
10.1080/07373939908917531
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
An experimental through dryer with continuous weighing system was developed for determining the drying late constants for thin layer drying of onion (Allium cepa L, variety: Agrifound White- I). Drying characteristics of onion were examined using ambient heated air for a temperature range of 50-80 degrees C and air now velocity range of 0.25-1.00 m/s. The influence of drying variables on drying rate constant was explained suitably by Arrhenius type equation. This was also compared with Power model. The models were tested with data produced in an experimental through dryer, using nonlinear regression analysis. The Arrhenius type model predicted the moisture ratios well at the experimental drying conditions.
引用
收藏
页码：299 / 315
页数：17
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