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ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
Journal of Odor and Indoor Environment Vol.6 No.1 pp.27-37
DOI :

흡입성능향상을 위한 공기차단막의 효과에 관한 연구

조종현1), 정양범2), 조수용*
경상대학교 항공기부품기술연구센터, 1)경상대학교 항공공학과 대학원
2)세보금속주식회사 기술연구소

Effect of Air-Curtain for Improving the Suction Performance

Soo-Yong Cho*, Chong-Hyun Cho1), Yang-Beom Jung2)
Department of Mechanical and Aerospace Engineering, Research Center Aircraft Parts Technology(ReCAPT) Gyeongsang National University
1)Department of Mechanical and Aerospace Engineering, Gyeongsang National University
2)Research and Development Center, Sebo Metal Co. Ltd

Abstract

A study is conducted to improve the suction performance of suction devices which are used to removepolluted air generated by welding or machining process at a spacious working place in industries. Air-curtainis applied around the suction inlet not only to prevent absorbing fresh air from the downstream region butalso to improve the suction performance from the upstream region. Four different type air-curtain devices,such as forward, sideward, 45° backward and fully backward, are adopted. Suction effect was investigateddepending on the mass flowrate blowing to generate air-curtain. Suction condition is selected to 110,000Reynolds number which has been widely used on typical suction devices, and a width of blowing passage ischosen to 10% of suction duct diameter. Comparing the computed results, the 45° backward air-curtainmethod was superior to others. When the blowing mass flowrate was 42% of the suction mass flowrate, thesuction region was improved to 38% compared to that of without air-curtain.
Air-curtain,Suction duct,Suction performance,Bellmouth,Ventilation
A9RCA10.pdf3.34MB

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