Analyse und Vergleich energetischer Standards anhand eines exemplarischen Einfamilienhauses bzgl. Energiebedarf und Kosten über den Lebenszyklus

Analysis and comparison of energy standards based on a typical single-family house in terms of energy demand and costs over the entire life cycle.

Over recent years significant progress has been made with regard to sustainable development, particularly for new buildings. Particularly noteworthy are the advancement of renewable energy technologies and new building materials with very low thermal conductivity. In parallel, solutions for lowenergy, passive and even surplus-energy homes were developed and implemented. These building standards are characterised by low heating energy consumption and therefore enable significant energy savings during the building utilisation phase. The question is whether the application of new technologies and building materials results in a partial shift of the total primary energy demand from the utilisation phase to the construction and maintenance phase. It is also questionable, however, what additional investments are required to achieve the savings in operating costs. In order to answer this question a number of different design and construction options for a free-standing single-family house were examined and subjected to a life cycle analysis using the LEGEP software tool. Based on this analysis a number of statements regarding the primary energy demand over the life cycle of the exexemplary single-family house and also for the cost trend can be made. However, the results are not universally applicable. They indicate that a holistic analysis is required for each individual case in order to achieve sustainable resource use.