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Der Anlass für die Evaluation des Deutschen Ressourceneffizienzprogramms ProgRess ist seine Fortschreibung im Jahr 2020. In zahlreichen Interviews identifizieren die Autorinnen und Autoren Stärken und Schwächen und zeigen Wege für eine institutionelle und strategische Weiterentwicklung auf. Die Bedeutung des Programms wird als überwiegend positiv, die bisherigen Ressourceneffizienzwirkungen hingegen als durchwachsen bewertet. Den Umsetzungsstand konnten die Befragten wenig beurteilen, da Indikatoren bislang nur für einen Teil der Maßnahmen vorhanden sind. Eine Priorisierung der Aktivitäten, verbindlichere Instrumente und Zielvorgaben sowie eine bessere Mittelausstattung gehören zu den Empfehlungen.
The paper undertakes a closer look on the relation of institutions and policy mixes within the multi-level scope of the European Union in the policy field of resource efficiency and maps out different configurations. Based on an extensive analysis of scope, foci, instruments and especially the distribution of institutional responsibilities in 32 EU countries, the paper aims to amplify the categorisation of policy mix characteristics developed by Rogge and Reichardt by considerations on the institutional background of policy mixes. It specifically brings into question the potential impact of different institutional settings on the consistency and coherence of approaches in this evolving policy field. Resource efficiency is an eminently cross-cutting policy concept and a specific interesting unit of analysis due to the observable heterogeneity of implementation approaches. However, it is still mainly disconnected from energy issues and, at the same time, EU policy has shifted to the circular economy approach, indicating further need for streamlining with the resource efficiency approach. The paper stresses the need to include institutional and multi-level governance issues for policy design and the development of policy mixes, especially in the context of the now refocused resource efficiency agenda to the transition to a circular economy.
Against the background of the question which role tax based instruments have to play in policy mixes to counteract the unbroken growth trend of global resource use, this chapter initially describes how the insights from a country comparative study on national resource policy frameworks could be linked to instruments for the internalisation of external environmental costs on a European scale. On the basis of a project specific but substantiated resource use vision and potential governance principles for three transition processes to reach the goals, the tax concepts are subsequently connected to simulation scenarios in order to illustrate the resource impacts that could be achieved by those policy reforms. Conclusively, barriers to such fundamental changes of framework conditions are briefly reflected upon and some conclusions are drawn.
The earth as we know it can only continue to exist if humanity finds a way to switch to a sustainable use of energy and resources. This work contributes to the research carried out to achieve this goal by improving the coating of adsorptive materials. These are used in heat transformation and drying processes that allow for efficient temperature and humidity control in buildings. A central component of these adsorptive coatings is the binder that acts as "glue" in the manufacturing of the coating. In this work the methods to evaluate binder performance regarding their thermal stability under the process conditions, their mechanical stability and their influence on the adsorptive properties of the coating were established. The coatings have to meet special requirements due to the thermal stresses and low pressure atmosphere they experience in these applications. A selection of silicone binders was then characterized with the established tests according to these requirements. Additionally a selection of inorganic binders was investigated because they allow for the use of high desorption temperatures and thus a high energy efficiency of the process. Out of these binders Silres® MP50E emerged as the most promising one due to very good adsorptive properties of the coating, its good temperature stability and ease of use. While some of the inorganic binders showed very good adsorptive properties and temperature stability the mechanical stability of all inorganic binders was not sufficient for their use in adsorption heat transformation technology. This is the first time that a broad selection of binders was evaluated with regards to adsorptive coatings and the results published in literature. With a suitable binder identified, the next step was to optimize the coating of the heat exchangers in order to work out how to manufacture the most efficient and powerful heat exchangers. Samples with different coating thicknesses were manufactured in small scale and full scale and their adsorption behavior was characterized. It could be shown for the first time that it is possible to increase energy efficiency by improving the mass ration of adsorber to coating and increase the delivered power at the same time. This was shown for small and full scale samples. It was shown that under the corresponding conditions the heat transfer from the coating layer to the adsorber metal substrate is the limiting step in the process. These results can now be used for the planning and construction of adsorbers. With knowledge of a suitable binder and how to coat efficient, powerful adsorbers, the coating process itself was improved to allow for industrial scale manufacturing. A central point here is the ability to control slurry rheology. Out of many rheology additives those that are suited for the application in adsorption heat transformation were identified and their influence on the slurry rheology thoroughly characterized. Additionally the process of slurry preparation could be simplified for several different adsorbents. Here it was shown that the supersonic deagglomeration step is not necessary to prepare a slurry. Extending the possible coating techniques and in addition to the dip coating process used so far, the spray coating of adsorptive coatings was established for the first time in literature. This process is widely used in the industry and allows for easier plugin into existing coating processes. For the coating of high resolution patterns a proof of concept of the screen printing process was carried out.
Ziel dieses Berichts im Rahmen des Projekts "Erfolgsbedingungen für Systemsprünge und Leitbilder einer Ressourcenleichten Gesellschaft" ist es, eine solche Ressourcenleichte Gesellschaft zu definieren. Hierzu wird zunächst der Rahmen für eine Ressourcenleichte Gesellschaft durch Aufbereitung der relevanten Diskurse bestimmt. Kapitel 1 zeichnet die zeitgeschichtliche Entwicklung des ressourcenbezogenen Nachhaltigkeitsdiskurses von 1972 bis in die Gegenwart nach. Aus dieser Analyse werden relevante Gesichtspunkte für eine Ressourcenleichte Gesellschaft identifiziert und am Ende des Kapitels in einer Übersicht dargestellt. Das zweite Kapitel entwickelt darauf aufbauend den bereits genannten definitorischen Rahmen, d.h. es erfolgt eine grundsätzliche Erarbeitung der normativen Kriterien, die eine solche Gesellschaft ausmachen sollte. Kapitel 3 skizziert dann existierende Zugänge zur Ressourcenleichten Gesellschaft und zeigt wichtige Merkmale dieser Ansätze auf, welche zur Entwicklung der Ressourcenleichten Gesellschaft durch Kontrastierung oder Übernahme von Merkmalen beitragen können.
Digitale Treffen, Videokonferenzen, Streaming - die Coronakrise hat unseren beruflichen und privaten Alltag mit einem Schlag in virtuelle Räume katapultiert und die Digitalisierung vorangetrieben. Daraus lassen sich auch Lehren für den Einsatz von digitalen Technologien für die nachhaltige Entwicklung ziehen.
