【摘要】 采用正交的二次旋转组合试验 ,以小麦为试验材料 ,选择粮食含水率、气流速度和料气浓度比作为试验因子 ,进行能量消耗的测试。对试验结果进行统计计算和方差分析 ,结果表明 :气流速度对能耗影响最大 ,料气浓度比次之 ,物料含水率最小 ;气流速度与能耗成二次抛物线关系 ;料气浓度比与能耗成一次线性关系 ;物料含水率与能耗成二次抛物线关系。在试验研究和理论分析的基础上提出了降低气力输送能耗的几项措施更多还原

【Abstract】 The energy consumption in pneumatic grain conveying was surveyed by the way of an orthogonal quadratic regression rotary combination test, adopting wheat as a testing material, and selecting grain moisture content, air velocity and air-material concentration ratio as the test factors. The results were calculated statistically and analyzed by variance analysis, showing that air velocity had the highest affection on energy consumption, while air-material concentration ratio came the second, and grain moisture content had the lowest affection; the air velocity and grain moisture content bore a relationship of quadratic parabola to energy consumption, while air-material concentration ratio had a linear relationship to energy consumption. Some effective methods for lowering the energy consumption in pneumatic grain conveying were proposed, which provided a theoretical basis for rationally designing and operating the pneumatic conveying systems in grain handling.更多还原