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Construction and demolition waste accounts for approximately a third of all waste generated in the EU. Adopting circularity principles to the construction processes aims to reduce waste generation. The focus of the study was on circular renovation solutions as renovation is becoming increasingly important. The renovation wave for Europe sets a target to double annual energy renovation rates in the next ten years. This study analyses circularity of the renovation concepts for the pilot renovation cases in seven countries in different climate zones in Europe. Analyses were carried out within the DRIVE 0 project funded by the European Union’s Horizon 2020 research and innovation program. Pilot buildings are detached houses and apartment buildings with different renovation interventions. Design for Disassembly criteria and embodied energy and embodied CO2 analyses combine design and material use aspects. Results show that in terms of design for disassembly indicators, prefabricated modular solutions have much higher circularity potential than the traditional wall insulation systems due to the low disassembly and reusability potential of external thermal insulation composite systems (ETICS). The environmental impact of the prefabricated insulation solutions is lower than and ETICS solutions. Although the difference between prefabricated and ETICS solutions in terms of environmental impact is smaller than in terms of disassembly and recovery options., CLIMA 2022 conference, 2022: CLIMA 2022 The 14th REHVA HVAC World Congress

This paper describes the “Solar 2002" building in Berlaar (Belgium) that was constructed by the Flemish non-profit organization mondo vzw. The aim of this retro-fit of an existing single family dwelling was the creation of an example project, demonstrating the potential of solar energy for the energy needs of buildings in a moderate, rather cloudy climate. This has led to a “Net-Zero Energy" building, that finally supplies more energy to the grid, then it consumes on an annual basis. While the approach of the project aims at sustainability in a much broader sense, including material and water use, this paper will focus on the energy-aspect for the building in use. Technical details of the building and the employed renewable energy technologies are given. ispartof: pages:1-7 ispartof: Proceedings SB10 Euregion: towards 0-impact buildings and environments held in October 2010 in Maastricht, Liege and Aachen (on USB) pages:1-7 ispartof: SB10 Euregional conference Sustainable Building location:Maastricht, Heusden-Zolder, Aachen, Liège date:11 Oct - 13 Oct 2010 status: published