Experimental Research of Coefficient of Local Resistance for Improved Construction of Control Devices in Ventilation System
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2017, Vol 21, Issue
Abstract
The analysis of theoretical research revealed the need to improve the design of throttling devices for ventilation systems in order to enhance their energy efficiency. An experimental setup is developed for the determination of the local resistance of the throttle device for ventilation system with convenient streamlined by executive working elements. According to the results of experimental studies there is set of local resistance values at different degrees of overlapping area of section of the duct adjusting device conveniently streamlined actuating elements. The graphical dependence for the engineering calculation of the proposed throttling devices is given. The logarithmic characteristic of control is obtained, which ensures smooth flow control in the ventilation system and expansion of the control range. The almost twice decrease of the coefficient of local resistance as compared to traditional throttles shows the possibility of extension of flow control range in air ducts and ventilation systems energy efficiency rise
Authors and Affiliations
G. Ratushniak, R. Stepankovskyi
Keywords
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