Modeling of the thermal regime of vertical enclosing structures of buildings

In the energy audit of the thermal regime of the structural shell of buildings, the study of temperature changes on the surface and inside the structure plays a crucial role. This study shows that modern software makes it possible to simulate the behavior of enclosing structures with high accuracy when the climatic parameters of the environment change. The paper considers the influence of changes in outdoor the air temperature from +10 ºC to -50 ºC on heterogeneous vulnerable parts of buildings. By modeling temperature changes at different points on the surface of the fence outside, on the surface inside, and in the thickness of vertical and horizontal structures, a mathematical relationship was established between the outdoor air temperature and the surface temperature of the fence in vulnerable parts (support of the balcony, support of the floor slab, in the corners of the window opening). When the outdoor temperature decreases to -50 °C, the temperatures on the surface and inside the enclosing structure changes according to linear mathematical dependencies. At positive outdoor temperatures, the temperature change of the vertical enclosing structure with a window opening occurs according to a power dependence. For horizontal enclosing elements, it is possible to generalize the dependence of the temperature change. The results give prerequisites for design solutions for vulnerable parts of buildings to improve the thermal protection of enclosing structures.