Building energy characteristic evaluation in terms of energy efficiency and ecology

Abstract

The assessment of energy efficiency and the environmental impact of building operation, in energy terms, determine to a large extent the energy intensity of the housing sector as a whole and the planning of energy transition measures. In order for these measures to be properly targeted and the building assessment to be reliable, it is necessary to accurately determine the energy demand of the building. The calculation model presented in the article allows for a multivariate assessment of a building's energy demand using static methods. The methodology presented in the article for the determination of energy performance certificates for buildings is complemented by an interpretation regarding the efficiency of the energy systems in the building and the environmental emissions. A model of the existing single-family building was evaluated for this purpose, and subjected to a multivariate analysis depending on the configuration of the heating system. Final and primary energy values, fuel consumption and emissions of pollutants to the environment were determined for each of total twenty-two variants. The analysis carried out and the results obtained show that there is no logical relationship between the primary energy indicator, used for the energy assessment of buildings, and the energy intensity of the building and its environmental impact.