Performance of knapsack sprayer: effect of technological parameters on nanoparticles spray distribution

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-46 Number-4
Year of Publication : 2017
Authors : Majid Hazim Reshaq Alheidary
DOI :  10.14445/22315381/IJETT-V46P235


Majid Hazim Reshaq Alheidary "Performance of knapsack sprayer: effect of technological parameters on nanoparticles spray distribution", International Journal of Engineering Trends and Technology (IJETT), V46(4),199-207 April 2017. ISSN:2231-5381. published by seventh sense research group

Iraqi farmers are currently used knapsack sprayers in their applications with a low cost to control diseases in vegetables and trees. Laboratory and field tests were carried out to study performance of knapsack sprayer after its modification to determine the optimal spray deposit on the target at different settings to control the flowrate at the time of application. A knapsack sprayer of 16 liters capacity was modified using existing materials in markets and its performance evaluated. Tests were done with conical dual tip nozzle. White papers cards were utilized to measure droplet characteristics. All measurements were made at different nozzle heights of 50, 70, and 90 cm, different operating pressure were without pressure gauge, 15, 25, and 30 psi. The main results showed that droplet distribution was proportional to nozzle heights and operating pressures. Increasing nozzle heights and operating pressure cause an effect in droplet distribution and spray deposit. A high spray deposit was observed at nozzle height of 50 cm and operating pressure of 30 psi. Operating pressure has greater influence on droplet size than nozzle height. Increasing operating pressure from 15psi to 30psi led to decrease in droplet size of 13.62%.


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Knapsack sprayer, nozzle height, operating pressure, droplet size diameter, deposit, coverage.