Dissertation > Excellent graduate degree dissertation topics show

Theoretical Analysis and Applied Research on Air-assisted Electrostatic Spraying System

Author: WangKeYuan
Tutor: ChenYongCheng
School: Shihezi University
Course: Agricultural Mechanization Engineering
Keywords: electrostatic nozzle theoretical analysis Orthogonal tests atomization quality
CLC: S491
Type: Master's thesis
Year: 2006
Downloads: 90
Quote: 4
Read: Download Dissertation


Pesticide electrostatic spraying is a new technology developed with ultra-low volume spraying technology. Over the past few decades, the advantages of electrostatic spraying have been recognized and accepted by people in the field of plant pests chemical protection. This paper present an overview of the development of pesticide electrostatic spraying technology, and made some theoretical analyses. Aimed at some problems such as short spraying distance, electricity-leaking and reverse ionization among electrostatic nozzles existing in the country, an air-assisted electrostatic-induction nozzle was designed. The basic designing theories,structure and working process of this nozzles were theoretically specified in the paper. And then the atomization quality and charge performances of this nozzle and its affecting factors were studied by carrying out performance experiment and statistic analysis. Result of the studies indicate: (1) from this nozzle, droplet were minute and uniform, the droplet VMD is between 30--60μm, and the DR is bigger than 0.67;(2) the regression equation for describing droplet size of this nozzle obtained from the experiment data was significant, and has higher forecast precision;(3)from the importance degree, the factors row were air pressure、jet orifice diameter、charge voltage、liquid pressure、air flow and liquid flow;(4) liquid pressure、jet orifice diameter and liquid flow were significant to droplet uniformity; (5)air pressure、jet orifice diameter and charge voltage were significant to droplet standard deviation, the cross-effects of air pressure and liquid pressure、jet orifice diameter were also significant; (6) charging droplet can enhance its uniformity and reduce small droplet drift;(7)within the experiment extend, air pressure at 0.4Mpa, liquid pressure at 0.25Mpa, jet orifice diameter atφ2.0 were the most suitable parameters for the nozzle; (8) this nozzle need be experimented in the wild for the work performance.

Related Dissertations

  1. Experimental Investigation and Statistical Analysis of the Pressur Atomizing Nozzle on a Heavy Gas Turbine,TK471
  2. The development of large-scale coal-water slurry nozzles and atomization,TK223
  3. The Theory That National Government Charges Western Market Economy is Analysed and Drawn Lessons,F812.4
  4. Theoretical Analysis of Convertible Bonds,F830.9
  5. Study on the Legal System of Financial Transfer Payment,F812.45
  6. The Research on the Theory of Cold in Chinese Medicine,R228
  7. Outflow of immigrant influx FDI : alternative or complementary ?,F832.6;F224
  8. A Study on the Relationship between Fiscal Expenditure Structure and Urban-rural Income Gap,F124.7;F224
  9. Industrial development and urbanization,F062.9
  10. Research on Modelling and Design of Mobile Learning System Based on Grid,TP311.52
  11. Modeling and Performance Analysis for Mobile IP,TN929.5
  12. Behaviour of Semi-Rigid Beam-to-Column Minor Axis Connections in Steel Frames,TU391
  13. Study of Kerosene Fueled Dual-mode Ramjet Combustor Operation Process,V430
  14. Theoretical Studies of City Management,F299.2
  15. The Theoretical Analyses and Mathematical Simulation of Some Nonlinear Chemical Reactions,O643.12
  16. Structure-directed Toward Inorganic Nanomaterials: Synthesis, Characterization and Structural-related Properties,TB383.1
  17. China 's government investment project success factors : theoretical analysis and measurement of empirical,F283
  18. Flow Field Characteristics Research and Design Optimization for a High Efficiency Counter-Rotating Fan,TH43
  19. Effects of Noise and Time Delay on the Death and Propagation Processes Described by the Malthus-Verhulst Model,Q14
  20. A Theoretical Analysis and Case Study on Vocational Education Collectivization,G719.2

CLC: > Agricultural Sciences > Plant Protection > Plant protection > Sprayer,Mist,Smoke
© 2012 www.DissertationTopic.Net  Mobile