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首页> 外文期刊>International journal of green energy >Simulation and validation of a suitable model for thin layer drying of ginger rhizomes in an induced draft dryer
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Simulation and validation of a suitable model for thin layer drying of ginger rhizomes in an induced draft dryer

机译：模拟和验证合适的模型，在诱导通风干燥机中进行姜根茎薄层干燥

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Variation in drying material and their biological differences, coupled with heat supply method in different dryers, makes mathematical modeling of drying complicated. Attempt was made to simulate a drying process and to identify best suitable model out of six selected drying models, for drying of ginger slices in a solar-biomass integrated drying system designed and developed for spice drying. Moisture content data were converted into the moisture ratio (MR) expressions and curve fitting with drying time for the selected drying models was analyzed. Sigma Plot software was used for nonlinear regression to the data obtained during drying and for modeling of drying curves. The suitability of the models was evaluated in terms of statistical parameters such as coefficient of determination (R-2), mean percentage error (P), and standard error estimate. Drying air temperature was in the range of 47-55 degrees C and air velocity was between 1.0 and 1.3ms(-1). Ginger slices were dried from 88.13% to 7.65 +/- 0.65% (wb) in 16h. Trays were interchanged in a predetermined matrix sequence from 4h onwards when moisture content was reduced to 60-70% (wb), for uniformity in drying. Highest value of R-2 (0.997), lowest value of SEE (0.020), and P value<0.0001 established Page model as the best suitable model for the developed drying system. The predicted MRs were in good agreement with the experimental values and the effective moisture diffusivity for ginger was found to be 2.97x10(-7)m(2)s(-1).
机译：干燥材料的变化及其生物学差异，再加上不同干燥机中的供热方法，使干燥的数学建模变得复杂。尝试模拟干燥过程并从六个选定的干燥模型中找出最合适的模型，以在为香料干燥设计和开发的太阳能-生物质集成干燥系统中干燥生姜片。将水分含量数据转换为水分比（MR）表达式，并分析所选干燥模型与干燥时间的曲线拟合。 Sigma Plot软件用于对在干燥过程中获得的数据进行非线性回归以及对干燥曲线进行建模。根据统计参数，例如确定系数（R-2），平均百分比误差（P）和标准误差估计值，评估了模型的适用性。干燥空气温度在47-55摄氏度范围内，空气速度在1.0到1.3ms（-1）之间。在16小时内将生姜片从88.13％干燥至7.65 +/- 0.65％（wb）。从4小时开始，当水分含量降至60-70％（wb）时，以预定的矩阵顺序交换托盘，以保持干燥均匀。 R 2的最大值（0.997），SEE的最小值（0.020）和P值<0.0001将Page模型确定为最适合已开发的干燥系统的模型。预测的MR与实验值非常吻合，姜的有效水分扩散率为2.97x10（-7）m（2）s（-1）。

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