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Communication Dans Un Congrès Année : 2021

Application of life cycle assessment to a building sample in order to help in projects evaluation

Résumé

Life cycle assessment (LCA) is particularly adapted to evaluate the environmental performance of buildings thanks to its multi-criteria approach on the entire life cycle. This method constitutes a basis for the eco-design of buildings and will play a key role in meeting current environmental challenges; it is therefore necessary to have reliable LCA tools which allow an easy interpretation of the results. This communication presents an aid in the evaluation of projects by developing performance benchmarks for several environmental indicators. On the principle of the European energy label, different levels of environmental impacts are evaluated and classified on a scale from A to G. The study is carried out over the entire life cycle, based on samples of buildings (housing and offices) with various construction dates from 1880 to 2016. Extreme values of environmental indicators are first calculated for each sample, corresponding to the best and the worst environmental performance of these building types. Then intermediate environmental performances are obtained by varying some parameters in a large number of simulations, particularly: the structure of the building (concrete or timber), the heating energy (gas, electricity or wood), the thickness of the walls and the type of windows. These simulations are carried out using a python program associated to dynamic energy simulation and LCA models of the software Pléiades, with the ecoinvent 3.4 database. Results present environmental labels corresponding to twelve environmental indicators: primary energy, CO2, health, biodiversity... The large number of simulations provides distribution functions for the samples, from A to G levels.
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Dates et versions

hal-04193942 , version 1 (01-09-2023)

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  • HAL Id : hal-04193942 , version 1

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Bruno Peuportier, Aurore Wurtz. Application of life cycle assessment to a building sample in order to help in projects evaluation. Climamed, REHVA, May 2021, Lisbon (Online Event), Portugal. ⟨hal-04193942⟩
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