Improvement of Residential Buildings Walls Operation Thermal Mode

Abstract

Temperature fields are analyzed for a wide range of external air temperatures in the contact node point of the window block adjoining the brick wall of a typical residential building constructed in the second half of the twentieth century. Replacing windows with modern thermal efficient structures significantly reduces overall heat losses, but does not exclude condensation formation on the internal window slopes in the window blocks. Significant increase in slope temperature can be achieved by shifting the window block inside the building. According to the numerical experiment results, the dependence of critical point temperature at the place of inner slope to the window box surface adjoining from the outside air temperature and the window block position along the wall thickness is analytically substantiated and described. Depending on the temperatures of the dew point and the outside air, the position of the window block on the wall thickness is determined, which ensures condensation absence on the inner window slopes surface and heat losses reduction through the wall contact node points.