Urban construction and architectureUrban construction and architecture2542-01512782-2109Eco-vector11196410.17673/Vestnik.2022.03.24Research ArticleFrost protection of the mouth of the exhaust tower of the cooling tower with natural draftDeminaYulia E.<p>Senior Lecturer of the of the Department of Heat and Gas Supply and Ventilation</p>demina.ye@samgtu.ruKudinovAnatolii A.<p>Doctor of Engineering Sciences, associate Professor, Professor of the Department of the thermal power plants</p>a.a.kudinov@yandex.ruSamara State Technical University181020221231701751710202217102022Copyright © 2022, Demina Y.E., Kudinov A.A.2022<p>The article presents the results of numerical simulation of the protection system of the mouth of the exhaust tower of a cooling tower with natural traction from freezing. To prevent the formation of ice, it is proposed to install an atmospheric air supply system at the mouth of the cooling tower, which ensures the creation of a protective boundary layer at the inner wall of the cooling tower and allows you to separate the warm moist air of the cooling tower from the cold walls. To test the possibility of using such a scheme, a numerical simulation of the process was performed using the k-SST turbulence model. The use of an additional air flow injection system makes it possible to increase the efficiency and reliability of a naturally aspirated cooling tower and a thermal power plant as a whole. Modeling of the cooling tower protection system from the formation of ice showed the possibility of using this scheme in all ranges of outdoor operating temperatures.</p>cooling towerice formationthermal power plantnumerical modelreliabilityградирняльдообразованиетепловая электрическая станциячисленная модельнадежность[Ob energeticheskoj strategii Rossii na period do 2035 goda: Rasporyazhenie Pravitelstva RF [On the Energy Strategy of Russia for the period up to 2035: Order of the Government of the Russian Federation], 2020, no. 1523-р.][Kudinov A.A., Demina Yu.E. Calculation of the drainage system of leaving flue gases from the turbine through the cooling tower. Gradostroitel’stvo i arhitektura [Urban Construction and Architecture], 2018, vol. 8, no. 1, pp. 135-138. (in Russian) DOI 10.17673/Vestnik.2018.01.23.][Balandina O.A., Puring S.M. Research of influence of air temperature on the level of nitrogen oxides in smoke gases of boiler plants. Gradostroitel’stvo i arhitektura [Urban Construction and Architecture], 2019, vol. 9, no. 4, pp. 27-32. (in Russian) DOI 10.17673/Vestnik.2019.04.5.][Ziganshina S.K., Kudinov A.A., Demina Yu.E. Increasing the efficiency of the CCP-200 Syzran CHP by removing the exhaust gases in the waste heat boiler to the atmosphere through the exhaust cupola of the cooling tower. Energetik [Power engineer], 2021, no 8, pp. 41-44. (in Russian)][Burov V.D., Dorohov E.V., Elizarov D.P. Teplovye electricheskie stantsii: uchebnik dlya vuzov [Thermal power plants: college textbook]. Moscow, МEU, 2005. 454 p.][Kudinov A.A., Ziganshina S.K., Demina Yu.E., e.a. Parogazovaya ustanovka elektrostantsii [Combined cycle gas turbine of power plant]. Patent RF, no. 2704364, 2019.][Demina Yu.E. Increase in efficiency of power plant operation due to the use of recycled water heat. Tradicii i innovacii v stroitel’stve i arhitekture. Stroitel’stvo I stroitel’nye tekhnologii [Elektronnyj resurs]: sbornik statej / pod red. M.V. Shuvalova, A.A. Pishchuleva, A.K. Strelkova [Tradition and innovation in construction and architecture. Building and construction technologies: a collection of articles / edited by M.V. Shuvalov, A.A. Pishchulev, A.K. Strelkov]. Samara, SamGTU, 2021, pp. 728-733. (in Russian)][Wilcox D. Turbulens modeling for CFD. San Diego, DWC Industries, 2006. 515 p.][Kudinov A.A. Tehnicheskaya gidromehanika: ucheb. Posobie. Dlya vuzov [Hydraulics: manual for graduate students]. Moscow, Mashinostroenie, 2008. 368 p.][Schlichting H., Gersten K. Boundary-Layer Theory. Luxembourg, Springer, 2017. 805 p.][NIST-JANAF. Thermochemical tables. NIST Standard Reference Database 13. 1998. DOI: 10.18434/T42S31][Sutherland W. The viscosity of gases and molecular force. Philosophical Magazine, 1893, vol. 5 (36), pp. 507-531.]