Abstract
One of the urgent problems today is to increase the energy efficiency of civil buildings. There is a need at the design stage to choose structures and design solutions that will compensate for the increasing consumption of energy resources in civil engineering. This article compares different building envelopes used in the construction of residential buildings: a volumetric block and a wall made of aerated concrete blocks. To determine the most energy efficient design solution construction is compared in different climatic regions. One of the most vulnerable places of a wall, from the point of view of energy efficiency, is a window jamb. In this article, an analysis is carried out to determine the construction with the lowest heat loss window jambs. Using the ELCUT software temperature fields and additional heat flux densities are calculated. According to the calculation, the proportion of heat loss due to window slope from heat loss according to the surface of the structure was determined. The heat flux density of the homogeneous section of the wall of the volume block is 1.28 times higher on average than in the aerated concrete wall. Regardless of the climatic conditions, the junction of the window jamb in buildings made of insulated panels of volumetric blocks is more energy efficient than the same junction in a building with aerated concrete walls.
Highlights
The rapid growth and development of modern cities leads to increased consumption of energy resources
The object of the study is the window jambs of residential buildings made of volume unit and aerated concrete walls
Their peculiarity is the appearance of additional heat flows, which reduce the overall heat transfer resistance of the enclosing structure and increase heat loss
Summary
The rapid growth and development of modern cities leads to increased consumption of energy resources. This makes it necessary to compensate for the overall increase in resource consumption due to the introduction of modern energy-efficient and energy-saving technologies at the design stage [1,2]. Heat loss of walls can reach 30%, but this is mostly due to thermal conductive inclusions or cold joint. Their peculiarity is the appearance of additional heat flows, which reduce the overall heat transfer resistance of the enclosing structure and increase heat loss
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