The CoNZEBs project formed the main part of a session at the IAQVEC conference in Bari in September 2019. CoNZEBs project partner held in total 6 presentations including a project overview, different project results and one of the national exemplary NZEB buildings presented in the end-user brochure. The papers are published as open source documents in IOP Conference Series: Materials Science and Engineering, Volume 609.
The paper 'Solutions sets for cost optimisation of nearly zero energy buildings (NZEBs) in four European countries' summarises the efforts and outcomes of the CoNZEBs work on the identification and assessment of alternative NZEB energy concepts with lower investment costs than the typical NZEB solution.
Nearly zero energy buildings (NZEBs) are required as the minimum standard for all new buildings in Europe by January 2021. NZEBS should, according to the Energy Performance of Buildings Directive (EPBD), be cost optimal, i.e. the cost of constructing and operating the building over its lifetime should be at its minimum. The EU Horizon2020 research project CoNZEBs, identify and assess technology solution sets that lead to cost reductions of new NZEBs in four EU member states. Focussing on buildings that comply with national NZEB requirements, designers can easily ignore alternative solutions that make the building cheaper while remaining within national requirements. This is not done intentionally, but primarily due to use of a traditional design thinking where optimisation is done on component level instead of a more holistic approach. Changing one building component may influence the cost and performance of other components. These alternative solutions take offset in a typical national multi-family building design and analyses the different lifetime costs in terms of costs for construction, and energy. Analyses of costs in different countries reveals different solutions sets being optimal. In CoNZEBs we compare different solution sets and investigate the possibility for “exporting” solution sets from one country to another.
The paper with the doi 10.1088/1757-899X/609/7/072055 is available as open access at IOP Conference Series: Materials Science and Engineering, volume 609 and at the CoNZEBs website.
The CoNZEBs project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 754046. The paper reflects the authors’ views. The Commission is not responsible for any use that may be made of the information it contains.
In Germany, national co-funding is provided by Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit within the research initiative Zukunft Bau (SWD-10.08.18.7-17.33).