|
|
|
| Target backside deposition characteristics of air-assisted electrostatic spraying |
| Wu Chundu1,Shi Yanan2,Zhang Bo2,Jiang Chaofeng1 |
| (1.Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education and Jiangsu Province,Jiangsu University,Zhenjiang,Jiangsu 212013,China;2.School of the Environment,Jiangsu University,Zhenjiang,Jiangsu 212013,China) |
|
|
|
|
Abstract In order to study the atomization characteristics of air-assisted electrostatic spray field and its effect on pesticide target backside deposition,the spraying experiment was carried out by using a tomato fruit with a 80 mm diameter as the spraying target and preparing a Congo red solution with a concentration of 1g/L instead of pesticide.The atomization characteristics was tested and analyzed in various conditions using OLID measurement system.The target backside deposition effect was quantitatively analyzed with the Spectrophotometer.According to the test results,the relationship between atomization characteristics and droplet target backside deposition was analyzed.The experiment indicates that the uncharged droplets can hardly adhere to spraying target backside.Under the influences of aerodynamic force and electrostatic force,the higher the nozzle pressure and charging voltage are,the smaller the droplet diameter is.And its distributions are more symmetrical.The target backside deposition will increase with nozzle pressure and charging voltage,especially with the increasing of charging voltage.The smaller droplet diameter and more symmetrical distributions can improve pesticide target backside deposition effect.
|
|
Received: 02 May 2009
Published: 30 July 2009
|
|
|
|
| [1]王贞涛,闻建龙,陈燕,等.静电雾化理论及应用技术研究进展[J].排灌机械,2004,22(6):41-44.Wang Zhentao,Wen Jianlong,Chen Yan,et al.Theory and application technology improvement of electrostatic atomization research[J].Drainage and Irrigation Machinery,2004,22(6):41-44.(in Chinese)[2]Laryea G N,No S Y.Development of electrostatic pressure-swirl nozzle for agricultural applications[J].Journal of Electrostatics,2003,57(2):129-142.[3]Edward L S.Agricultural electrostatic spray application:a review of significant research and development during the 20th century[J].Journal of Electrostatics,2001,51(1):25-42.[4]何雄奎,严苛荣,储金宇,等.果园自动对靶静电喷雾机设计与试验研究[J].农业工程学报,2003,19(6):78-80.He Xiongkui,Yan Kerong,Chu Jingyu,et al.Design and testing of the automatic target detecting,electrostatic,airassisted,orchard sprayer[J].Transactions of the Chinese Society of Agricultural Engineering,2003,19(6):78-80.(in Chinese)[5]Law S E.Electrostatic pesticide spraying:concepts and practice[J].IEEE Transaction on Industry Applications,1983,19(2):160-168.[6]Cooper J F,Ones K A,Moawad F.Low volume spraying on cotton:a comparison between spray distribution using charged and uncharged droplets applied by two spinning disc sprayers[J].Crop Protection,1998,17(9):711-715.[7]李烜,何雄奎,仲崇山,等.荷电雾滴沉积效果的多因子响应面模型[J].高电压技术,2007,33(2):32-36.Li Xuan,He Xiongkui,Zhong Chongshan,et al.Effect of different spray factors on charged droplet deposit using response surface methodology[J].High Voltage Engineering,2007,33(2),32-36.(in Chinese)[8]陈志刚,吴春笃,孙英琨.负高压电晕荷电喷雾沉积特性[J].高电压技术,2008,34(11):2440-2446.Chen Zhigang,Wu Chundu,Sun Yingkun.Deposition characteristics of electrostatic spraying by negative high-voltage corona discharge[J].High Voltage Enginee-ring,2008,34(11),2440-2446.(in Chinese)[9]贾卫东,李萍萍,邱白晶,等.农用荷电喷雾雾滴粒径与速度分布的试验研究[J].农业工程学报,2008,24(2):17-21.Jia Weidong,Li Pingping,Qiu Baijing,et al.Experimental investigation of droplet diameter and velocity distributions in agricultural electrostatic sprays[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(2):17-21.(in Chinese) |
|
|
|
