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.