Classification of spray nozzles based on droplet size distributions and wind tunnel tests.
Commun Agric Appl Biol Sci
; 71(2 Pt A): 201-7, 2006.
Article
en En
| MEDLINE
| ID: mdl-17390794
ABSTRACT
Droplet size distribution of a pesticide spray is recognised as a main factor affecting spray drift. As a first approximation, nozzles can be classified based on their droplet size spectrum. However, the risk of drift for a given droplet size distribution is also a function of spray structure, droplet velocities and entrained air conditions. Wind tunnel tests to determine actual drift potentials of the different nozzles have been proposed as a method of adding an indication of the risk of spray drift to the existing classification based on droplet size distributions (Miller et al, 1995). In this research wind tunnel tests were performed in the wind tunnel of the International Centre for Eremology (I.C.E.), Ghent University, to determine the drift potential of different types and sizes of nozzles at various spray pressures. Flat Fan (F) nozzles Hardi ISO 110 02, 110 03, 110 04, 110 06; Low-Drift (LD) nozzles Hardi ISO 110 02, 110 03, 110 04 and Injet Air Inclusion (AI) nozzles Hardi ISO 110 02, 110 03, 110 04 were tested at a spray pressures of 2, 3 and 4 bar. The droplet size spectra of the F and the LD nozzles were measured with a Malvern Mastersizer at spray pressures 2 bar, 3 bar and 4 bar. The Malvern spectra were used to calculate the Volume Median Diameters (VMD) of the sprays.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Tamaño de la Partícula
/
Plaguicidas
/
Viento
/
Agricultura
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Commun Agric Appl Biol Sci
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2006
Tipo del documento:
Article
País de afiliación:
Bélgica