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Balcony Systems (Isokorb) Impact on Energy Need for Heating and Economic Valuation

Rising living standards have led to a significant increase in building energy consumption over the past few decades. Therefore, along with sustainability requirements, it is essential to establish an effective and precise energy demand model for new buildings. In principle, energy demand in buildings is very important plan to pre-calculate and that is one of the reasons why it is supposed to be precalculated for most of the sustainable buildings. Net Zero-Energy Buildings (NZEBs) have received increased attention in recent years as a result of constant concerns about energy supply constraints, decreasing energy resources, increasing energy costs and the rising impact of greenhouse gases on world climate. Promoting whole building strategies that employ passive measures together with energy efficient systems and technologies using renewable energy became a European political strategy following the publication of the Energy Performance of Buildings Directive recast in May 2010 by the European Parliament and Council. In Net Zero-Energy Buildings (NZEB) is necessary to calculate all factors that influence on energy need for heating. However what is still underestimated is the consideration that the energy performance of any building component is the result not only of its thermophysical properties but also of how are all the components installed and connected to each other. Thermal bridging in buildings can contribute to a multitude of problems. One of the details that create thermal bridges is balcony. This paper is focused to calculate Balcony systems (isokorb) impact on energy need for heating and economic valuation of balcony systems in residential building.