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Thin layer drying characteristics of kidney beans

机译：肾脏干燥特征芸豆

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Thin layer drying characteristics of kidney beans were measured for several drying conditions involving five temperatures (25, 30, 35, 40, 45°C) and several relative humilities between 15 and 40% for each temperature. It was confirmed that thedrying of kidney beans was in the second falling rate period, because the drying characteristics curves showed that the drying rate fell off decreasingly, describing a gentle curve accordingly as the moisture content decreased. Using the measured data,parameter B{sub}1 was determined by applying a non-linear least squares method to an approximate solution of the diffusion equation and values of B{sub}1 were about 0.8. Therefore, the measured data were fitted to two exact solutions for the infiniteplane sheet model in the diffusion equation by a non-linear least squares method, and the measured results agreed well with the calculated results. It was confirmed that the infinite plane sheet model for the diffusion equation was most suitable todescribe the thin layer drying characteristics of kidney beans. An Arrhenius type equation was used to relate the drying rate constant K of kidney beans to temperature T and it had a good fit to the experimental data.
机译：测量肾豆的薄层干燥特性对于涉及五个温度（25,30,35,40,45℃）的几种干燥条件，每个温度为15至40％的几个相对剥离。据证实，芸豆的乳豆类在第二下降率期间，因为干燥特性曲线表明，随着水分含量降低，干燥速率逐渐降低。使用测量的数据，通过将非线性最小二乘法向近似解来确定参数B {sub} 1，近似解的扩散方程和B {sub} 1的值为约0.8。因此，通过非线性最小二乘法方法将测量的数据安装在扩散方程中的Infiniteplane片材模型中的两个精确解决方案，并且测量结果与计算结果很好地同意。证实扩散方程的无限平面片模型最适合于肾脏薄层干燥特性。 Arrhenius型方程用于将芸豆的干燥速率常数K相关，并且它具有良好的实验数据。

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