title: Determination of effective factors on power requirement and conveying capacity of a screw conveyor under three paddy grain varieties.
abstract: An experiment was conducted to investigate the effect of screw speed, inclination angle and variety on the required power, and conveying capacity of a screw conveyor. The experiment was designed with four levels of screw speed (600, 800, 1000, and 1200 rpm), five levels of inclination angle (0, 20, 40, 60, and 80°), and three levels of variety (Alikazemi, Hashemi, and Khazar). The Length, diameter, and pitch of screw were 2, 0.78, and 0.5 m, respectively. The experimental design was a randomized complete block (RCB) with factorial layout. Maximum and minimum power requirements of tested screw conveyor were 99.29 and 81.16 Watt corresponding to conveying capacity of 3.210 and 1.975 ton/hour obtained for khazar and Alikazemi varieties, respectively. The results indicated that as screw inclination angle increased from 0 to 80°, the conveying capacity decreased significantly from 3.581 to 0.932 t/h. It can be concluded that the most conveying capacity was 4.955 t/h at tests with khazar variety and conveyor inclination angle zero degree.
authors.affiliation: Department of Agricultural Machinery, College of Agriculture, University of Mohaghegh Ardabili, Ardabil, Iran.
authors.forename: Ezzatollah
authors.initials: E
authors.lastname: Askari Asli-Ardeh
authors.forename: Ahmad
authors.initials: A
authors.lastname: Mohsenimanesh
mesh_terms: D018556:Crops, Agricultural; D004867:Equipment Design; D007492:Iran; D012275:Oryza