摘要
针对农药静电喷雾中荷电雾滴在靶标背部的沉积效果,基于正交试验和单因子试验,采用2因子5水平中心组合设计及响应面分析,评价了工作电压、喷施速度、喷施距离以及靶标材质4项因子对雾滴在叶片靶标背部的沉积效果,建立并验证了二次回归模型,探讨了主要影响因子及其最佳水平范围。结果表明,回归模型预测结果与实际试验相符。
Electrostatic sprays of agricultural particulates are exploited for beneficially increasing the deposition efficiency of the finely divided droplet used as input in the processing of pesticide spraying, tn order to evaluate the deposit of charged pesticide droplet on the backside of spraying target, deposition of pesticide droplet per area on the backside of single target was investigated with orthogonal test including parameters such as the voltage of spraying, spraying velocity, target materials and distance between targets and nozzle. The results show that spraying voltage, target material and the spraying velocity have significant effects on the charged droplet deposition. The respective correlations between charged droplet deposition on leaf target and spraying voltage or spraying velocity were investigated under two single factor experiments. The increased of spraying voltage produced an improvement in droplet deposition while the deposit effects were attenuated by increased spraying velocity. The main effects and interactions of these two factors were conducted by the 2 factors and 5 levels central composition design. Results show that the two main effects on droplet deposition per area were significant and their interaction had little effects under this criterion. A second-order regression equitation based on response surface methodology （RSM） was fitted to data and was used to provide the optimized scales of both voltage and velocity, namely, the spraying velocity 0. 4-0. 5 m/s and spraying voltage 23-40 kV, respectively. The application of response surface methodology is an effective method for conducting a reduced number of experiments in order to obtain the optimum spraying conditions and allows the selection of the optimum operating conditions to achieve the desired specifications of the charged droplet deposition.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2007年第2期32-36,共5页
High Voltage Engineering
基金
国家自然科学基金资助项目(30671388)
国家"十五"攻关项目(2004BA516A02)
863项目(2003AA209040)
关键词
响应面模型
静电喷雾
荷电雾滴
靶标背部
沉积效果
response surface methodology
electrostatic spraying
charged droplet
reversed target
deposit effect
