【摘要】 利用深床干燥试验台,通过单因素试验和三因素二次回归正交旋转组合试验,建立了热风温度、表现风速和谷层厚度对干燥时间影响的回归方程,分析各因素的单因素效应与互作效应,利用频数分析法进行优化。结果表明:含水率24%的稻谷进行深床干燥时,干燥时间小于180min的概率为95%,干燥热风温度为68～75℃,表现风速为0.58～0.67 m.s-1,谷层厚度为19～24cm,优化了稻谷干燥生产的工艺参数,为实际生产经济指标评估提供了依据。更多还原

【Abstract】 Rice drying experiments were conducted in order to optimize the drying duration.A deep drying test bed was used in the experiments including single factor experiment with five factors and five levels.In the study the effects of air temperature,air velocity and paddy thickness on the drying duration were investigated.The results were analyzed with orthogonal rotary regression method to establish the relationship between performance function and each parameter.Single factors and correlative effects on performance were also discussed based on the regression model.An optimum range under 95% probability of drying duration less than 180min can be summarized for air temperature,air velocity and paddy thickness at 68～75℃,0.58～0.67m·s-1,19～24cm,respectively by frequency analytical method.The study provides useful formation for the evaluation of economic indicator in the practice.更多还原