The effect of heat-conducting inclusions on the heat absorption of enclosing structures

Summary

The presence of various high-heat conducting inclusions in external enclosing structures leads to a thermal resistance decrease and heat loss increase resulting in the overspend of primary energy resources. Currently, the issues of heat-conducting inclusion accounting and their effect on heat loss is relevant, since linear inhomogeneities account for up to 40% of losses, whereas point inhomogeneities account for up to 25%. The object of the study is determining the effect of high-heat conducting inclusions in the calculation of external enclosing structures with account of the heat absorption of the materials used. A literature review was conducted to identify the issues related to the heat loss through enclosing structures containing high-heat conducting inclusions. Heat loss through a multilayer enclosing structure containing a high-heat conducting inclusion was simulated, and a comparative analysis of the effect of the high-heat conducting inclusion was presented with account of the material heat absorption. The study focused on heterogeneous exterior walls of buildings constructed from precast elements containing high-heat conducting inclusions. The research subject is the thermal state of an enclosing structure and patterns of temperature fields and heat flows in heterogeneous exterior walls of buildings constructed from precast elements with high-heat conducting inclusions. The research method involves computer modeling of physical processes within the enclosing structure under specified boundary conditions.

Key words

heat losses , heterogeneous inclusions , thermal resistance , heat-conducting elements , material heat absorption