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Critical Parameters on Pneumatic Handling of Paddy Seed by Vacuum Pressure CIGR Journal
Abdulkadir, Tukur Daiyabu.
ABSTRACTThis study was carried out to determine the critical operational parameters for pneumatic handling of MR219 paddy seeds, with emphasis to seeding of system of rice intensification (SRI) seedling tray. The relevant physical and aerodynamic properties of MR219 seeds were studied. Twenty nozzle designs were developed based on the physical properties. A suitable operational vacuum pressure for single paddy seed picking was determined from established models based on one thousand kernel mass M1000, true density, sphericity and projected area of MR219 paddy seed. The performances of the twenty nozzle designs were evaluated experimentally using an automated platform consisting of screw mechanism, vacuum manifold, solenoid valve, vacuum pump and Atmel...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Single Seed placement; SRI Tray; Aerodynamic properties; Pneumatic handling; Suction; Paddy seed..
Ano: 2019 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5086
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Aerodynamic and some physical properties of sunflower seeds as affected by moisture content CIGR Journal
chavoshgoli, esmaeil khalil; abdollahpour, shamsollah; abdi, reza; babaie, aziz; ,.
Abstract: The physical and aerodynamic characteristics of seeds can strongly influence their movements in the agricultural machine as well as in the air.  The knowledge of the physical characteristics of particles is essential for the constructors and operators of agricultural machines.  In this research some physical and aerodynamic properties of two Iranian edible seeds of sunflower cultivars (Badami and Doursefid) were studied in the moisture content range from 7% to 30% wet basis (w.b.).  With decrease in moisture content the true density of Badami and Doursefid decreased from 561.02 to 457.29 kg/m3 and 509.35 to 440.50 kg/m3, respectively.  For studying aerodynamic properties (terminal velocity and drag coefficient) the ratio of mass (g) to projected...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sunflower seed; Physical properties; Aerodynamic properties.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2662
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