Authors

Abstract

In order to acquire the coupling mechanism of the paddy flow, hot air and far-infrared radiation, an experiment bench based on the screw conveyor and grain collecting tank of combine harvester was set up, and then the orthogonal experiment with six factors and five levels was conducted using the dehydration rate (DR), increased crack percentage (ICP) and specific energy consumption (SEC) as indexes. The optimal combination of factors for each index was acquired and the experiment results show: the drying combination could achieve rapid drying with good drying quality and low energy consumption; the initial water content of paddies is the dominant factor for the DR, ICP and SEC; the hot air has more effect on the drying performances compared with the IR radiation.

Abstract in Chinese

为了获取谷物流、热风和远红外场的耦合机理，以联合收割机的搅龙和收粮箱为基础，搭建了远红外热风联合干燥实验平台，以干燥速率、爆腰增率以及单位能耗为目标，进行了六因素五水平正交实验，获取了各实验目标最优的因素组合，实验结果表明：该嵌入联合收割机中的组合干燥系统能够实现快速、高质以及低能耗干燥；水稻的初始含水率是影响干燥速率、爆腰增率以及单位能耗的主要因素；相比于红外辐射，热风对干燥性能具有更大的影响