The recast of the Energy Performance Building Directive contains a new article about the need to increase the number of buildings which go beyond current national requirements, and to draw up national plans for increasing the number of nearly zero-energy buildings (nZEB) with the final target that by 2020 all new buildings shall be nearly-zero energy. Nearly zero-energy buildings are buildings with a very high energy performance, where the remaining low energy demand can be supplied to a significant extent by renewable energy.
In this paper, a detached house complying with the proposed Hungarian nZEB requirements is analysed. The life cycle cost and life cycle environmental impacts of the building are assessed for various building service systems to optimise the building design.
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