CRITERIAL EQUATION OF SUITABILITY THE ELIMINATION PROCESS OF THE RADIAL FAN INFLUENCING FLOW
DOI:
https://doi.org/10.31649/2311-1429-2018-2-96-101Keywords:
ventilation systems, aerodynamic characteristics, injection flow, dimensional analysis method, similarity equation, dimensionless complexesAbstract
In order to save energy in construction, the directions of increasing energy efficiency of ventilation equipment are considered. The factors influencing the efficiency of ventilation systems, their technical and economic characteristics are indicated. One of the ways is to improve the work of the fans. The proposed method of aerodynamic improvement of the ventilation system by installing a diffuser in it with a leveling plate placed directly behind the radial fan is analyzed. This new constructive solution aims to improve the efficiency of the ventilation systems by aligning the flow of the radial fan. The results of investigations of the efficiency of the equalization of the injection flow for different and variable operating modes of the radial fan are given. The absence of a mathematical description of the analyzed processes and the necessity of disseminating the results of experimental studies on similar objects is noted. Taking into account all the determining parameters of influence on aerodynamic processes, a mathematical description of the analyzed processes was carried out. A criterion equation of similarity for a process of equalization of a flow of flux in a diffusor located on a radial fan is obtained by the method of analysis of dimensions. This equation can be extended to similar unexplored objects.
References
DSTU B EN 15232. Energy Efficiency of Buildings, Influence of Automation, Monitoring and Building Management (EN 15232: 2007, IDT). - Effective from 01.04.2012. - Kyiv: Ukrrahbudinform, 2011. (in Ukrainian).
DSTU B A.2.2-12: 2015. Energy efficiency of buildings. Method of calculating energy consumption for heating, cooling, ventilation, lighting and hot water supply. - Effective from 01.01.2016. - Kyiv: Ukrexbudinform, 2015. (in Ukrainian).
Karadzhi V.G., Moskovko Yu.G. Some features of efficient use of ventilation and heating equipment. Leadership / V.G. Karadzhi, Yu.G. Moskovko. - M .: INNOVENT, 2005. - 138 p. (in Russian).
Gulay B.I., Optimal arrangement of the alignment plate in the design of the diffuser to increase the pressure and flow characteristics of the ventilation systems / B. I. Gulai, H. V. Mironyuk, O. V. Omelychuk, V. B. Shepitchak // Bulletin of the National University "Lviv Polytechnic". The theory and practice of construction, 2016. - No. 844. - P. 71-75. (in Ukrainian).
Sedov L.I. Methods of similarity and dimension in mechanics / L.I. Sedov. - M .: "Science", 1967. 464 p. (in Russian).
Batuner L.M. Mathematical methods in chemical engineering / L.M. Batuner, M.E. Pozin. - Leningrad: GOSKHIMIZDAT, 1963. – 638 c. (in Russian).
Labay V. Ya. Heat-mass exchange: Textbook for high schools / V. Ya Labay. - Lviv: Triad Plus, 2004. - 260 p. (in Ukrainian).
Alekseychuk N.N. Aerodynamic improvement of inlet nozzles of centrifugal compressors with side feed / N.N. Alekseychuk, Yu.A. Animov, V.P. Geramsimenko, L.I. Stremoukhov // Aviation-space equipment and technology. - 2005. - №8 / 24. - Pp. 102-106. (in Russian).
Prokhorenko L.V. Reducing the power consumption of the fan VRTSD-4.5 // Energy Saving. - 2005. - № 8. - Pp. 18-21. (in Russian).
5Industrial fans. Performance testing using standardized airways. ISO 5801.
Downloads
-
PDF (Українська)
Downloads: 7
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 Володимир Йосифович Лабай, Богдан Іванович Гулай, Ганна Михайлівна Клименко, Богдан Іванович Пізнак, Григорій Іванович Шпак
This work is licensed under a Creative Commons Attribution 4.0 International License.
