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http://dx.doi.org/10.14775/ksmpe.2021.20.07.113

Characteristics of Wind Flow Variation with Wing Development of Space-Reduced Damper  

Baek, Geun-Uk (JEIL Industries)
Baek, Nam-Do (JEIL Industries)
Lee, Myung-Won (Graduate school of Convergence Science, Pusan National University)
Kang, Myungchang (Graduate school of Convergence Science, Pusan National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.20, no.7, 2021 , pp. 113-120 More about this Journal
Abstract
An experimental device was designed to control the opening of a damper via operating the folding blade drive of the device and to control the amount of air flowing through the damper. In addition, an inverter was installed in the blower to control its fan rotation speed and hence the amount of air flowing through the damper. An experimental study was conducted on the opening of the folding blade damper and changes in the rotational speed of the blower. From the results, the theoretical air volume of the folding blade damper and experimental air volume were observed to be in good agreement within an error range of ±3%. As the mass flow rate of the air passing through the folding blade damper increases proportionally with the changes in damper opening and fan rotation speed, the performance of the damper can be controlled proportionally. The mass flow rate was also observed to increase linearly; therefore, the mass flow rate of the air passing through the folding blade damper increases proportionally with changes in the rotation speed of the blower, such that the performance of the damper is proportional to a constant air volume even with varying rotation speeds of the blower.
Keywords
Foldable Blade Damper; Air Volume Change; Degree of Damper Opening; Number of Revolutions of the Blower; Air Mass Flow Rate;
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