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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.Broyda V.A. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st. 1
Title of the articleCalculated characteristics of ventilation air flow stabilizer
Abstract.Disabling of the end sections, may result in unplanned increased airflow in the remaining sections of the ventilation system with mechanical drive. This may lead to increased noise level and wasted electric power consumption. With decreasing temperature of the outdoor air, the air flow of natural exhaust system increases more than predicted, also additional heat is required to warm up outdoor air intake compensating for the exhaust. Applying airflow stabilizers can prevent such undesirable consequences. The article examines application of direct action stabilizer comprising of the following elements: element that reduces the flow cross-section due to the rising pressure drop, elastic element with linear characteristic of elasticity, which limits the reduction of its cross section. Aerodynamic resistance of stabilizer is described as a sudden narrowing of the channel. Pressure change is modeled as an increase in gravitational pressure of the natural exhaust system. Based on evaluation of applied forces and pressures, the magnitude of the flow cross-section reduction and tension of the elastic element are calculated. As a result, the following characteristics of the direct action stabilizer are determined: change in pressure and pressure drop, variable drag coefficient, stabilized airflow, stress and tension of the elastic element.
Keywords.Stabilizer, airflow, elastic element.
For citations:Broyda V.A. Calculated characteristics of ventilation air flow stabilizer // Izvestiya KGASU. 2014. №1(27) P.140-144.

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