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A simplified energy performance assessment method supporting system design and fed by EU product policy data : application to heating systems in buildings

Maria Calero Pastor 1
1 G-SCOP_CPP [2016-2019] - Conception Produit Process [2016-2019]
G-SCOP - Laboratoire des sciences pour la conception, l'optimisation et la production
Abstract : Environmental performances of products largely influence performances of systems. Moreover, systems have still an untapped energy-saving potential concerning environmental performances at system level rather than at the level of the individual products of which they are composed.The objective of this work is to propose an approach to deal with energy performance assessments at system level considering information/data from European product policies (Ecodesign, Energy Labels, Green Public Procurement and EU Ecolabel). The hypothesis here is that environmental product policies, that have been very useful in facilitating a homogeneous rating scheme in the EU market for individual products, can also be advantageously used in a method to assess the energy performance of systems.This research work proposes a simplified method for supporting the design of good performing heating systems using data from EU product policies, which is available during the design stage. Firstly, a system modelling with a top-down approach is used so that system aspects (geographical conditions, building characteristics, etc.) are regarded. Secondly, the system energy performance is calculated from a bottom-up approach so that, from the performance of the products and sub-systems composing the system. The method has 5 steps divided in two main phases: diagnostic of the initial system and improvement. The method is supported by an original calculation tool which determines the energy parameters (energy demand, energy losses, energy consumption and low-emission energy efficiency) at system level using performance figures from EU product policies. It helps assessing how good a heating system is by setting worst, benchmark and best possible systems. The method is flexible, and allows different product configurations to be assessed and can hence support the design activities of heating systems.The method is tested on a real case study, the re-design of existing heating systems of a dwelling in north Italy, including a solar hot water system and a space heating system. The case study demonstrates the potential of improvement of the heating systems based on the results produced by the method, by helping selecting products currently available in the market. In addition, based on the assessment, several improved design alternatives can be proposed combining different performances of the products which compose the heating systems.The dissertation also analyses the evolution of the different approaches of EU product policies (product, extended product and system). In particular, the package concept set in the energy labelling regulations of heating systems is studied in detail. The package label of Regulation 811/2013 is implemented on the same prior case study so that results can be compared with the ones of previous sections. It is shown that the package concept can also support decisions made in the building design phase especially in the choice of appropriate components based on estimation of system performances. In addition, the peer-reviewed paper analyses the link of building-related product policies with the Energy Performance of Buildings Directive, and it is concluded that they should be somehow better aligned.
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Submitted on : Thursday, May 17, 2018 - 1:19:05 PM
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  • HAL Id : tel-01794196, version 1



Maria Calero Pastor. A simplified energy performance assessment method supporting system design and fed by EU product policy data : application to heating systems in buildings. Construction durable. Université Grenoble Alpes, 2018. English. ⟨NNT : 2018GREAI015⟩. ⟨tel-01794196⟩



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