Determining the Droplet Size Classification of Hollow Cone Nozzles with Droplet Image Analysis

Year 2017, Volume: 13 Issue: 2, 121 - 126, 26.12.2017

Erkan Urkan Hüseyin Güler

Abstract

Considering the harmful effects of
pesticides, it is necessary to apply them very precisely. The selection of
nozzle in pesticide applications is a matter of particular attention. The size
of the droplet is very important for fighting with disease and pest. Coarser
droplets run-off from the plant while finer droplets are prone to drift. For
this reason, it is necessary to determine the droplet diameter in order to
reduce drift. Volume median diameter is commonly used for understanding droplet
size in the spray pattern.

Due to the direct effect of the size of the droplet, a large number of
studies have been conducted on the nozzles. But there are still some missing
parts. For this reason, every year the nozzle manufacturers put a new type of
nozzle on the market.

In this study, the volume median diameter of
different sized (0.8 and 1.0) hollow cone nozzles widely used in Turkey at
different pressures (6, 9, 12 bar) in constant temperature and relative
humidity were determined by Oxford Visisizer-PDIA (Particle Droplet Image
Analysis). It has been determined that the volume median diameter of these two
sizes of nozzles, which are tested at lower pressures, is very close to each
other.

Keywords

Droplet size, Oxford particle analyzer

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