Formation of the Microclimate of Residential Premises during Heating with a Radiant-Convective Heating Device

This article examines the peculiarities of microclimate formation when using radiant-convective heating device - radiator. The main purpose of the work is to determine the advantages and disadvantages of radiator heating in residential premises, to assess the influence of  window sizes, room dimensions and the device on the formation of the microclimate in the room. The study includes the analysis of temperature and velocity fields in three representative rooms of different sizes and configurations. The authors identify the disadvantages of current heating systems associated with the uneven temperature distribution across the height of the room and the formation of zones of reduced comfort near the windows. The work examines three typical rooms for which mathematical modeling of thermal processes is carried out using differential equations to describe the processes of heat and mass transfer. The main attention is paid to the influence of window sizes, room dimensions and heating devices on the microclimate. The authors note that radiators do not always cover the entire width of windows, which leads to the formation of cold zones at their edges, the penetration of cold air deeper into the room and the formation of discomfort zones inside the room. The simulation results show that the indoor air parameters comply with GOST standards, however, the subjective comfort of residents may decrease due to uneven temperature distribution. In conclusion, it is concluded that it is necessary to develop new types of heating devices that will more effectively cope with the task of maintaining a comfortable microclimate and will eliminate the negative impact of cold air penetration through window openings on comfort.

1. R 03.02.178–2019. Recommendations for the Design of Base Structures for Ice Rinks of Multifunctional Structures. Minsk, Belarusian National Technical University, 2019. 81 (in Russian).

2. State Standard 30494–2011. Residential and Public Buildings. Indoor Microclimate Parameters. Moscow: Standartinform Publ., 2013. 15 (in Russian).

3. Denisikhina D. M. (2014) Features of Numerical Modeling of the Behavior of Air Flows in the Volumes of Concert and Theater Halls. Naukovedenie [Science Studies], (3). Available at: naukovedenie.ru/PDF/81TVN3 14.pdf (in Russian).

4. Denisikhina D. M. (2023) Calculation of the Air Exchange Coefficient by Methods of Mathematical Modeling of Microclimate Parameters. Izvestiya KGASU = News of the Kazan State University of Architecture and Engineering, (4), 337–345 (in Russian).

5. Denisikhina D. M. (2023) Numerical Study of the Patterns of СО2 Distribution in Public Buildings. Innovatsii i Investitsii = Innovation & Investment, (5), 368–372 (in Russian).

6. Denisikhina D. M., Rusakov S. V. (2019) Changing Microclimate Parameters during a Hockey Match in the Indoor Ice Arena. AVOK = Ventilation, Heating, Air Conditioning, Heat Supply and Building Thermal Physics (ABOK), (6). URL: https://www.abok.ru/for_spec/articles.php?nid=7301 (in Russian).

7. Diachek P. I., Livansky D. G. (2010) Temperature Non-Uniformity of Ice-Field Surface at Covered Skating-Rinks. Energetika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, (2), 41–47 (in Russian).

8. Livansky D. G. (2010) Analysis of Methods for Calculation and Processes Pertaining to Formation of Temperature Regime of Ice Field Foundation. Energetika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, (6), 74–80 (in Russian).

9. Livansky D. G. (2024) Local Heating System to Increase the Comfort of Spectators in the Stands of the Indoor Ice Rink. Nauka i Tehnika = Science & Technique, 23 (3), 225–234 (in Russian). https://doi.org/10.21122/2227-1031-2024-23-3-225-234.

10. Livansky D. G. (2020) Temperature and Humidity Conditions of Ice Rinks of Multifunctional Structures [Dissertation]. Minsk, Belarusian National Technical University (in Russian).

11. Livansky D. G. (2011) Physical and Mathematical Model of Ice-Field Formation Processes. Energetika. Izvestiya Vysshikh Uchebnykh Zavedenii i Energeticheskikh Ob’edinenii SNG = Energetika. Proceedings of CIS Higher Education Institutions and Power Engineering Associations, (1), 69–79 (in Russian).

12. SN [SN – Building Regulation] 4.02.03–2019. Heating, Ventilation and Air Conditioning. Minsk, Ministry of Architecture (in Russian).