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Using an overall mass-transfer coefficient for prediction of drying of Chilean coigue.

机译:使用整体传质系数预测智利雪茄的干燥。

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摘要

A phenomenological model was used to quantify the drying process of Chilean coigüe (Nothofagus dombeyi). This model is based on an overall mass-transfer coefficient, K, which was determined in four laboratory drying runs. The model suitably described the drying of Chilean coigüe lumber of 19- and 30-mm thickness with K ranging from 0.012 to 0.021 ms-1 at a dry-bulb of 60°C and a wet-bulb of 40°C. A preliminary industrial run under somewhat similar conditions in a 100-m3 industrial kiln with 38-mm-thick lumber showing that the drying process could be represented by a K of 0.008 ms-1. The laboratory-scale values of K can be regarded as ideal from which to compare the performance of the industrial unit.
机译:现象学模型用于定量智利古芝(Nothofagus dombeyi)的干燥过程。该模型基于整体传质系数K,该系数是在四个实验室干燥运行中确定的。该模型适当地描述了在60°C的干球和40°C的湿球下干燥厚度为19和30毫米的智利coigüe木材的干燥度,K值在0.012到0.021 ms-1之间。在具有38毫米厚木材的100立方米工业窑中,在有些相似的条件下进行的初步工业运行表明,干燥过程可以用0.008 ms-1的K表示。可以将K的实验室规模值视为比较工业设备性能的理想值。

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