Abstract
Every year governments of the European Member States invest several billion Euros in maintenance and upkeep of their schools. With 17% of non-residential buildings in the European Union being educational buildings, there is a substantial opportunity for setting examples of integrated refurbishment actions, which address functional and energy-related aspects in a joint view.Currently these potentials are not fully exploited. The reasons for the few numbers of truly holistic school refurbishment projects can be found in the limited budgets, the political and institutional framework conditions as well as the lack of innovative and holistic building refurbishment concepts. The assumption for research was that refurbishment in educational buildings focuses mostly on single measures in respect of maintenance and adaptation of the building structure. Energy efficiency measures are only selectively considered and functional changes are rarely implemented in existing buildings.This paper summarizes the results of the research project SchulRen+ [5] that analyzed school buildings in an integrated approach: Considering structural, functional and energy-related aspects in a joint view – the project reveals high performance refurbishment actions that have the potential for the development of ‘Nearly Zero Energy’ or ‘Plus Energy’ buildings.Based on the example of the school building stock of the city of Vienna, a nationally funded project analyzed these constraints with the goal of providing workable solutions for integrated school refurbishments. In an interdisciplinary approach, stakeholders from the city municipality, schools as well as building professionals provided input for the development of a methodology for replicable energy- and functionally optimized school refurbishment concepts. Structural, functional and energy relevant framework conditions were summarized and synergetic potentials of comprehensive school refurbishments were highlighted. Following the requirements of the stakeholders, different scenarios (light, intermediate, advanced) were subsequently tested in terms of functionality, energy efficiency and life cycle costs. For one case study a typical end of 19th century building was selected - similar building types can be found across central Europe. It demonstrated the required changes in prospective school refurbishment projects. The emphasis was on the energetic optimization in synergy with the optimization of the functional room concepts in order to give justice to the changed requirements in new teaching types and methods.The case study resulted in concrete recommendations for decision support and showed how portfolio management and a holistic refurbishment approach could be undertaken for larger educational building stocks.
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