the nexte elephant in the climate-room?

2.230 / 5.000The topic of the circular economy is more relevant than ever. The signs have never been more favorable for the start of a real circular economy, and not just in the construction and real estate sectors. The European Union has ambitious plans to strengthen the circular economy as part of the Green Deal. A sustainable economy that emits fewer emissions and uses fewer resources needs a legal framework in order to be able to prosper in fair competitive conditions. One potential that has so far been neglected is technical building equipment (TGA). TGA systems and installations contain strategically and economically valuable raw materials, such as copper, aluminum, steel and rare earths, which at the same time cause high material-related environmental impacts, e.g. gray CO2 emissions (embodied carbon), due to energy- and CO2-intensive manufacturing processes and short replacement cycles within a building's life cycle.The topic of the circular economy is more relevant than ever. The signs have never been more favorable for the start of a real circular economy, and not just in the construction and real estate sectors. The European Union has ambitious plans to strengthen the circular economy as part of the Green Deal. A sustainable economy that emits fewer emissions and uses fewer resources needs a legal framework in order to be able to prosper in fair competitive conditions. One potential that has so far been neglected is technical building equipment (TGA). TGA systems and installations contain strategically and economically valuable raw materials, such as copper, aluminum, steel and rare earths, which at the same time cause high material-related environmental impacts, e.g. gray CO2 emissions (embodied carbon), due to energy- and CO2-intensive manufacturing processes and short replacement cycles within a building's life cycle.Das Thema Kreislaufwirtschaft ist aktueller denn je. Die Zeichen für den Start einer echten Kreislaufwirtschaft waren nie günstiger, nicht nur im Bau- und Immobiliensektor. Die Europäische Union hat im Rahmen des Green Deals ehrgeizige Pläne zur Stärkung der Kreislaufwirtschaft. Eine nachhaltige Wirtschaft, die weniger Emissionen ausstößt und weniger Ressourcen verbraucht, braucht einen rechtlichen Rahmen, um unter fairen Wettbewerbsbedingungen prosperieren zu können. Ein bisher vernachlässigtes Potenzial ist die technische Gebäudeausrüstung (TGA). TGA-Systeme und -Anlagen enthalten strategisch und ökonomisch wertvolle Rohstoffe, wie Kupfer, Aluminium, Stahl und seltene Erden, die gleichzeitig aufgrund energie- und CO2-intensiver Herstellungsprozesse und kurzer Ersatzzyklen innerhalb des Lebenszyklus eines Gebäudes hohe materialbezogene Umweltauswirkungen, z. B. graue CO2-Emissionen (verkörperter Kohlenstoff), verursachen.The topic of circular economy is more relevant than ever. The signs have never been better for the beginning of a true circular economy, and not just in the construction and real estate sectors. The European Union has ambitious plans to strengthen the circular economy as part of the Green Deal. A sustainable economy that emits fewer emissions and uses fewer resources needs a legal framework in order to prosper in fair competitive conditions. A potential that has so far been neglected is technical building equipment (TGA). TGA systems and system installations contain strategically and economically valuable raw materials, such as: B. copper, aluminum, steel and rare earths, which at the same time have high material-related environmental impacts, e.g. B. gray CO2 emissions (English embodied carbon) can be caused by energy- or CO2-intensive manufacturing processes and short replacement cycles within a building life cycle.Das Thema Kreislaufwirtschaft ist aktueller denn je. Die Zeichen für den Beginn einer echten Kreislaufwirtschaft waren nie besser, und das nicht nur im Bau- und Immobiliensektor. Die Europäische Union hat im Rahmen des Green Deals ehrgeizige Pläne zur Stärkung der Kreislaufwirtschaft. Eine nachhaltige Wirtschaft, die weniger Emissionen ausstößt und weniger Ressourcen verbraucht, benötigt einen gesetzlichen Rahmen, um unter fairen Wettbewerbsbedingungen zu prosperieren. Ein bisher vernachlässigtes Potenzial ist die Technische Gebäudeausrüstung (TGA). TGA-Systeme und Systeminstallationen enthalten strategisch und ökonomisch wertvolle Rohstoffe, wie z. B. Kupfer, Aluminium, Stahl und seltene Erden, die gleichzeitig hohe materialbezogene Umweltauswirkungen haben, z. B. graue CO2-Emissionen (engl. embodied carbon), die durch energie- oder CO2-intensive Herstellungsprozesse und kurze Ersatzzyklen innerhalb eines Gebäudelebenszyklus entstehen können.The topic of circular economy is more topical than ever. The signs have never been more favorable for the beginning of a true circular economy, and not just in the construction and real estate sectors. The European Union has ambitious plans to strengthen the circular economy under the Green Deal. A sustainable economy that emits fewer emissions and uses fewer resources needs a legal framework in order to be able to prosper in fair competitive conditions. A previously neglected potential is technical building equipment (TGA). TGA facilities and system installations contain strategically and economically valuable raw materials, such as: B. Copper, aluminum, steel and rare earths, which also have high material-related environmental impacts, e.g. B. gray CO2 emissions (embodied carbon) can be caused by energy- and CO2-intensive manufacturing processes and short replacement cycles within a building life cycle.Das Thema Kreislaufwirtschaft ist aktueller denn je. Die Zeichen für den Beginn einer echten Kreislaufwirtschaft waren nie günstiger, und das nicht nur im Bau- und Immobiliensektor. Die Europäische Union hat im Rahmen des Green Deal ehrgeizige Pläne zur Stärkung der Kreislaufwirtschaft. Eine nachhaltige Wirtschaft, die weniger Emissionen ausstößt und weniger Ressourcen verbraucht, benötigt einen rechtlichen Rahmen, um unter fairen Wettbewerbsbedingungen prosperieren zu können. Ein bisher vernachlässigtes Potenzial ist die Technische Gebäudeausrüstung (TGA). TGA-Anlagen und Systeminstallationen enthalten strategisch und wirtschaftlich wertvolle Rohstoffe, wie z. B. Kupfer, Aluminium, Stahl und seltene Erden, die jedoch auch hohe materialbezogene Umweltauswirkungen haben, z. B. graue CO2-Emissionen (verkörperter Kohlenstoff) können durch energie- und CO2-intensive Herstellungsprozesse und kurze Ersatzzyklen innerhalb eines Gebäudelebenszyklus entstehen. TGA includes all permanently installed technical facilities inside and outside a building that serve the functional use of the building. According to DIN 276, TGA is assigned to cost group 400 (technical systems). Studies show that the gray CO2 emissions of TGA materials can make up around 50% of the total gray CO2 emissions, especially in energy-efficient buildings. For types of use such as laboratory buildings or construction methods with a high proportion of wood, the relative share of TGA in terms of total gray emissions increases further. This means that the ratio of KG 400 can exceed 50%. It is noteworthy in this context that TGA usually only has a material mass share of around 1-4% of the entire building. In practice, the grey CO2 emissions of the TGA are taken into account using life cycle assessment calculation rules of certification systems based on DIN EN 15978 and other specific requirements, such as the DGNB and QNG systems, but this is done on a flat-rate basis using so-called TGA base amounts. However, detailed evaluations suggest that these amounts are set too low and therefore do not reflect the previously mentioned proportions of the TGA.Feedback geben