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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Vladimir A. Broida, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation. E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleAnalytical study of the operation of the natural exhaust ventilation system of a multi-storey building with air flow stabilizers in the cold season
Abstract.Formulation of the problem. Natural ventilation is widely used in buildings for various purposes. When the outdoor temperature drops, the consumption of supply and exhaust air increases, which leads to an increase in the cost of thermal energy during the cold season. The research aimed at eliminating this problem is relevant. To prevent an increase in ventilation air flow, air flow stabilizers can be used - direct-acting regulators or conventional automatic regulators using external energy sources. Stabilizers can be installed on intake devices or on exhaust channels. In multi-storey buildings, exhaust systems are often common to all or several floors. Homeowners could install air flow stabilizers to improve the properties of their ventilation systems. The purpose of the study is to analytically determine the effect of installed flow stabilizers on the change in exhaust air flow in branches where flow stabilizers are not installed, as well as in other sections of the exhaust natural ventilation system of a multi-storey building. The research objectives are: to build an analytical model to study such influence; to perform calculations and determine the change in air flow depending on the floor, on the branch of which there is no flow stabilizer and the change in flow in the rest of the system and the entire system as a whole. Results. Analytical dependencies are obtained and the analysis of the impact of the use of flow stabilizers not on all floors of a multi-storey building is carried out. It has been established that on the floors where stabilizers are not used, the exhaust flow rate increases significantly. Also, the air flow increases in the remaining sections connected in series and in the system as a whole. Conclusions. The significance of the obtained results for the construction industry lies in the quantitative assessment of the impact of the use of stabilizers not on all floors of the natural ventilation system of a multi-storey building, which makes it possible to consciously choose the use of air flow stabilizers when installing such systems.
Keywords.natural ventilation, flow stabilizer, supply valve, exhaust channel, multi-storey building, cold season.
For citations:Broida V.A. Analytical study of the operation of the natural exhaust ventilation system of a multi-storey building with air flow stabilizers in the cold season // News KSUAE. 2023. № 1(63), p. ¬¬¬43-51, DOI: 10.52409/20731523_2023_1_43, EDN: IHKPHS

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