ANALYSIS OF APPROACHES TO DETERMINING THE QUANTITY OF THERMAL ENERGY FOR THE NEEDS OF HOT WATER SUPPLY IN THE ENERGY CERTIFICATION OF BUILDINGS

Abstract

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.