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http://dx.doi.org/10.5762/KAIS.2020.21.12.192

Numerical Analysis for the Development of a Blower to Extend the Life of the Impeller and Reduce Power Costs by Changing the Air Flow  

Kim, Il-Gyoum (School of Mechanical System Eng., Kwangwon National University)
Park, Woo-Cheul (School of Mechanical System Eng., Kwangwon National University)
Sohn, Sang-Suk (Dept. of Mechanical Eng., Soon Chun Hyang University)
Kim, Young-Nam (Korea Fan Engineering)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.12, 2020 , pp. 192-199 More about this Journal
Abstract
The blower erosion phenomenon was investigated to develop a long-life blower with a volume flow rate of 10,000 ㎥/min with the required total pressure efficiency of 83% or more. The blower performance and blower erosion were predicted through numerical analysis by computational fluid dynamics(CFD). The conditions used for numerical analysis were an air volume of 16,200 ㎥/min, a rotation speed of 893 rpm, and a temperature of 330℃. The specific gravity, particle size, and amount of the dust was 3.15, 90 ㎛~212 ㎛, and is 265 kg/min, respectively. To examine the effects of a dust deflector on erosion, erosion analysis was performed by comparing the models with and without a dust deflector. Numerical analysis showed that when the dust deflector is installed, the average tended to decrease by 167% in the impeller and 133% in the boss. CFD using the Finne's model for erosion revealed a parallel restitution coefficient of 1 and a perpendicular restitution coefficient of 0.1. The blower performance of case 5 was 691.7 mmAq, and the efficiency was 83.3% when the rotation speed and the air volume flow rate were 880 rpm and 16,200 ㎥/min, respectively.
Keywords
Numerical Analysis; Computational Fluid Dynamics; Erosion; Dust Deflector; Blower; Impeller;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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