Abstract
The task of improving the buildings energy efficiency is one of the most important tasks in the design of buildings. The buildings energy efficiency can be improved by rational choice of building structures and reduction of the heat transfer. Significant heat transfer of a building occurs through the windows. At the design stage of a building, it is necessary to estimate the magnitude of a heat transfer of different windows. Currently the designers are increasingly using the technology of building information modeling (BIM). 3D-model of the building consists of models of structural elements, which contain information about the different geometric, physical, technological and other characteristics of the structure. The aim of this work is to develop a parametric information model of the window taking into account its heat transfer resistance. In this paper the design of window units with one, two and three sashes are discussed. The value of window-reduced resistance to a heat transfer is calculated inside the window information model and is presented in the table. The method can be applied to different window design. Thermophysical parameter of the window information model can be used to assess the energy costs of operating the building.
Highlights
The inflow, utilization and loss of energy are accounted when assessing the energy efficiency of the building
This work is based on the use of the theory of calculation of building heat loss and the theory of building information modeling with the help of Autodesk Revit
The proposed method of window modeling and the calculation of its resistance to a heat transfer is based on the technology of building information modeling
Summary
The inflow, utilization and loss of energy are accounted when assessing the energy efficiency of the building. The part of the heat energy goes into the environment as a result of the energy transfer through the outer structure of the building. Significant heat transfer of the building occurs through the windows. To reduce a heat transfer we need to choose a rational design and materials of window construction. A window consists of a frame and several sashes. A sash consists of sash frames and glazing. Window manufacturers give background information about resistance to a heat transfer for various kind of their glazing and sash frames
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