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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.Artem S. Petrov, Candidate of Technical Sciences, Associate Professor, Kazan State University of Architecture and Civil Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Aleksey I. Ivantsov, Candidate of Technical Sciences, Associate Professor, Kazan State University of Architecture and Civil Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Ainur M. Yuzmukhametov, Assistant, Kazan State University of Architecture and Civil Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleAssessing overmoistening of structures in places of heat engineering inhomogeneities
Abstract.In existing regulatory documents (SP 50.13330 and ISO 13788), overmoistening protection is taken into account along the surface of the structure, that is, in thermally homogeneous parts of the enclosure. There is no requirement for protection against overmoistening of inhomogeneous nodes. At the same time, field and numerical studies show that in many cases overmoistening occurs precisely in places of thermal inhomogeneity. A qualitative assessment of the degree of moistening of thermal inhomogeneity becomes available to a wide range of engineers in connection with the advent of specialized software. However, the questions of both the method of such a calculation and the interpretation of the results obtained remain unclear. The results of a numerical study of the moisture state of the enclosure fragment based on a software package with a two-dimensional transfer of vaporous moisture according to G. Glaser are presented. Based on the moisture fields obtained, the calculated values of thermal conductivity over the fragment cross section were refined. An example of assessing overmoistening of a structure based on simplified stationary methods by G. Glaser, Safin I.Sh. and Kupriyanov V.N.is given. It is shown that the fulfillment of the requirements for protection against overmoistening of a homogeneous fragment of a structure in accordance with paragraph 8 of SP 50.13330 is not enough, in addition to existing calculations, it is necessary to assess possible moistening in places of heat engineering heterogeneity. The alternative method for protecting structures from moistening in places of heat engineering heterogeneity is proposed based on the methods of G. Glaser, I. Sh. Safin and V.N. Kupriyanov.
Keywords.external wall structures, temperature and humidity conditions, condensation, humidity fields, heat engineering inhomogeneity
For citations:Petrov A.S., Juzmuhametov A. M., IvantsovA. I. Assessing overmoistening of structures in places of heat engineering inhomogeneities // News KSUAE, 2022, №3 (61), pp. 45-55, DOI: 10.52409/20731523_2022_3_45, EDN: JDAYJE


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