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Effect of Primary Nozzle Configuration on the Flow and Transfer Characteristics in an Ejector System for Pellet Transfer  

Kim, Keum-Kyu (Department of Precision Mechanical Engineering, Chonbuk National University)
Kim, Eui-Soo (Department of Precision Mechanical Engineering, Chonbuk National University)
Kang, Shin-Myoung (Department of Precision Mechanical Engineering, Chonbuk National University)
Lee, Jee-Keun (Division of Mechanical & Aerospace System Engineering, Chonbuk National University, RCIT)
Rho, Byung-Joon (Division of Mechanical & Aerospace System Engineering, Chonbuk National University, RCIT)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.16, no.5, 2008 , pp. 49-59 More about this Journal
Abstract
The effects of design parameters on the pellet transport rate in the ejector system which is widely used in the production processes of automotive parts were investigated experimentally. The primary nozzle geometry, the area ratio (R) of nozzle exit cross-sectional area to mixing chamber cross-sectional area and the distance (S) from primary nozzle exit to mixing chamber entrance were considered as the design parameters. The area ratios of the primary nozzle were varied from R=0.10 to R=0.25, 0.30, 0.40 and 0.55. The primary nozzle was positioned at the non-dimensional distance (S/D) of 1.30, 1.87, 2.44, 3.00 and 3.75, normalized using the mixing chamber diameter (D). The design parameters were determined to run with high efficiency by measuring the pellets transport rate. The geometry and the area ratio (R) of the primary nozzle had an effect on the pellet transport rate of the ejector system, and the area ratio of R=0.3 was carefully selected after taking the minimum fluidization velocity and transport rate of applied pellets into account. The higher pellet transport rate with the variation of the distance (S/D) was observed at S/D of 2.44.
Keywords
Pellet transport system; Ejector; Primary nozzle; Area ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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