The issue of determining heat loss through a wall in the ground
Statement of the problem. The main difference between heat transfer through enclosing structures in the ground and heat transfer through other enclosing structures is the influence of the thickness of the surrounding soil, the dimensions of which are disproportionately larger than other elements of underground structures. The issue of heat loss through the elements of enclosing structures, located above ground level, is widely considered in the literature, however, the heat loss of the underground part of the building remains not fully understood. The purpose of the work is to study the non-stationary mode of heat transfer of the wall in the ground and to determine the factors that largely affect the heat loss of the underground part of the building. The objectives of the study are: to determine the heat loss of the wall in the soil of different heights depending on the season and the thermophysical characteristics of the soil, as well as the effect of the junction of the wall and the floor in the soil. Relevance. At the moment, work is underway to revise the methods of engineering calculation of resistance to heat transfer of enclosing structures in the ground, for which the values of specific heat losses for various nodes of the underground part of the building are required. Results. The paper presents the results of a study of heat fluxes through a wall in the ground, depending on the coordinate of the structure and the season, the assessment of the influence of the thermal diffusivity of the soil on the obtained dependences, the presence of the influence of the junction of the wall in the ground with the floor in the ground on heat loss is shown. Conclusions. The significance of the obtained results lies in the fact that their use for finding the specific heat loss of heat engineering inhomogeneities of the underground part of the building will improve the accuracy and facilitate the design of enclosing structures in the ground.