1. Summit 2025 presentation - Atze Boerstra.pdf

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1、prof.dr.ir.Atze BoerstraFaculty of Architecture and theBuilt Environment2025 EUROVENT summit25-09-25Circular Circular building building installations:installations:myth or reality?myth or reality?Standard vs ideal approach HVAC system design2Take-Make-Waste approach still around.3(Photos:Arjen Raue,

2、bba binnenmilieu)Standard reaction to the idea of circular HVAC Sector is already very circular.No need for further actions/regulations.We use mostly recycled metals(e.g.in ventilation ducts),heat recovery nowadays is standard and fans for example are already ultra-energy efficient.4Relative environ

3、mental impact HVAC systems Relative environmental contribution of mechanical&electrical installations when renovating Dutch office buildings:5Source:Metabolic,202025%Lifespan installations vs lifespan other components6Installations in the news(heat pump example)7Calculated environment impact of heat

4、 pumps much higher than anticipated;difference partially due to forgotten effects related to use of refrigerants and electronics for system controlsHVAC systems relatively metal-&CRM-intensive 8Construction Products Regulation(CPR)From fossil fuels to rear earth metals At the core of the present tra

5、nsition is a switch from fossil fuels to metals such as copper,lithium and rare earth metals.These metals are needed for producing the required wind turbines,solar panels,heat pumps,batteries etc.Making them critical materials for achieving the energy transition.Currently,the EU must import the bulk

6、 of these mate-rials,making us very dependent on other countries.For more information,read the TU Delft&et al.whitpaper:Critical materials,green energy and geopolitics;a complex mix.Critical Materials_LDE White Paper_DEF20220627.pdf9ESPR 2024:Ecodesign for Sustainable Products Regulation This regula