About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Vadim E. Zinurov, Candidate of Technical Sciences, Head of the Department of Engineering Graphics, Kazan State Power Engineering University, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-1380-4433 Arslan M. Muginov, Engineer of the Department of Engineering Graphics, Kazan State Power Engineering University, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0009-0008-2914-6923 |
| Title of the article | Numerical simulation of residential temperature fields during operation of radiator and floor heating systems |
| Abstract. | Problem statement. Ensuring sustainable thermal comfort in residential premises requires taking into account the heterogeneity of the temperature field formed by various types of heating systems. Traditional methods of thermal engineering calculations do not allow to describe in detail the interaction of convective and radiative processes, which determines the relevance of the application of numerical modeling. The purpose of the study was to determine the characteristics of the temperature fields in the room during the operation of radiator and floor heating systems. To achieve this purpose, the tasks were formulated: to create a geometric and computational model, to perform a study of grid independence, to perform calculations under various temperature conditions and analyze the features of the thermal regime. The study was carried out using mathematical modeling based on solving the equations of air motion and heat transfer, taking radiation into account. A room of the given geometry with two heating options was considered. Polyhedral grids tested for grid independence were used. The calculations used the laminar flow model and the Monte Carlo radiative heat transfer model. Results. The proportions of heat losses were quantitatively determined using the main boundary areas of the calculation model. Vertical profiles of the average air temperature over the room height were created for different outdoor air temperatures. It was shown that the supply slot forms a local temperature minimum for both heating systems, while the radiator system produces a local temperature maximum in the area of the heating device and a pronounced vertical temperature stratification. Conclusions. The largest contribution to the total heat balance is associated with the heating of supply air, whose proportion reaches 44–53% for the radiator heating system and 48–59% for the floor heating system. It was established that the supply slot forms a persistent zone of local cooling at y/Y = 0,33; at the same time, the floor heating system provides more effective compensation of local cooling, whereas the radiator heating system forms a local overheated zone at y/Y = 0,22 and a more pronounced vertical temperature stratification. |
| Keywords. | numerical modeling, temperature field, radiator heating, floor heating, building heat loss, heat and mass transfer, grid independence |
| For citations: | Zinurov V.E., Muginov A.M. Numerical simulation of residential temperature fields during operation of radiator and floor heating systems // News of KSUAE, 2026, № 1 (75), p. 123-135, DOI: 10.48612/NewsKSUAE/75.11, EDN: GQBZPK |
