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热泵干燥双层干燥室内部气流组织模拟
Authors
刘广彬
徐开轩
+3 more
李连生
王天佐
罗伏青
Publication date
1 January 2020
Publisher
Abstract
热泵干燥系统干燥室内气流分布直接影响干燥效果,模拟其内部流场分布规律可为干燥室结构的优化设计提供理论依据。本文建立了双层干燥室数学模型,模拟了干燥室内部气流分布规律,对比了增加进风挡板对各层物料速度分布的影响。结果表明,无进风挡板时下层干燥室风速较大,整体风速在1 m/s以上,上层干燥室风速较小,部分区域不足0.3 m/s,上下差距较大,气流分布较为不均。增设进风挡板后改善了其内部气流分布规律,提高了物料层附近气流分布的均匀性。增设挡板后相同位置的气流不均匀度下降,其中上侧两托盘截面处分别由59.7%下降至27.1%、58.6%下降至36.8%,改善了气流分布及干燥效果
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of Botany,Chinese Academy Of Sciences
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Last time updated on 09/06/2022