The cost of maintaining the construction fund in Ukraine is several times higher than in European countries. Given Ukraine's energy dependence, increasing the energy efficiency of housing is an extremely important issue. The greatest effect in the existing apartment buildings is achieved only in the case of integrated implementation of energy saving measures for fencing structures, utilities and equipment, and such projects require significant funds. To obtain funding from various investment funds and to be able to participate in state or local funding programs, it is necessary to perform an energy audit and justify energy saving measures, to assess the energy efficiency class of the building. For this purpose, an energy survey was performed using instrumental and analytical methods, as well as modeling of energy consumption in a specialized software product Audytor OZC. The geometric, thermal and energy characteristics of the building have been specified. To increase the level of energy efficiency, a set of measures is proposed, the possibilities of attracting investments for the implementation of energy efficiency measures are studied. The technical and economic analysis with use of engineering methods of calculation, experimental measurements, modeling is executed. According to modern requirements, a certificate of energy efficiency has been developed and the change of energy efficiency class in case of implementation of measures has been assessed. The result of the implementation of measures will be a reduction in the total consumption of energy resources, as well as the cost of paying for them, improving the conditions of the microclimate. Social aspect: participation in the investment project will allow residents to gain practical experience in implementing various projects in compliance with norms and procedures, increase consumer awareness of improving the condition of the building, energy efficiency and opportunities to reduce environmental impact.
In Ukraine, at the legislative level, as part of the implementation of EU Directives, mandatory energy certification has been introduced for certain types of new and reconstructed buildings. In addition, in order to receive financing from various investment funds and the possibility of participating in state or local thermomodernization programs, it is necessary to perform their energy audit and justify energy-saving measures, assess the energy efficiency class. In Ukraine, there is a complex of regulatory acts, methodical documents, construction norms and standards in the field of energy certification, which is constantly updated. The national methodology for calculating energy efficiency indicators has been passed and the by-laws have changed several times, in particular, in the part of accounting for energy consumption for hot water supply, which in turn affected the energy efficiency class. The article evaluates the influence of different approaches to the calculation and accounting of additional revenues from hot water pipelines on the example of a residential multi-story building in Kyiv. As part of the research, a detailed energy survey was carried out using instrumental and analytical methods, the geometric, thermal and energy characteristics of the building were specified, and a set of measures to increase the level of energy efficiency was proposed. As part of the research, a detailed energy survey was carried out using instrumental and analytical methods, a calculation model was formed and a series of calculations was performed. The impact on the specific energy demand, total energy consumption and energy efficiency class of the existing building of changes in the regulatory framework, the features of taking into account utilized heat losses, the number of consumers is shown.
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