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Priore Yasmine

Collaboratrice scientifique HES

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Collaboratrice scientifique HES

Phone: +41 26 429 67 28

Desktop: BFA_1B_43

Haute école d'ingénierie et d'architecture de Fribourg
Boulevard de Pérolles 80, 1700 Fribourg, CH

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2023

Global carbon budgets for the built environment :

Book chapter ArODES

how far are we to achieve a 1.5°C limit in global warming ? A Swiss example

Yasmine Priore, Guillaume Habert, Thomas Jusselme

Dans Azari, Rahman, Moncaster, Alice, The routledge handbook of embodied carbon in the built environment (27 p.). 2023, London : Routledge

Link to the publication

Summary:

Stringent limits and reduction strategies paths on greenhouse gas (GHG) emissions are being defined at different levels to limit global warming. Carbon budgets and impact reduction targets are the main instruments used today to set goals and follow progress across industrial sectors and countries (e.g.: IPCC, Paris Agreement, science-based targets, etc.). In this context, translating global goals to local realities implicates a set of different challenges. Standardized methodologies of allocation can support a target-cascading process. On the other hand, local strategies are not currently designed to directly respond to carbon budgets in a 2050 horizon. The life cycle analysis of buildings implicates an intricate cross-industry and cross-border carbon accounting. For these reasons, effective and aligned targets are needed to support and guide all actors in the construction sector. This chapter aims at addressing these challenges by identifying carbon reduction strategies compliant with a limited carbon budget in a dynamic approach using the Swiss built environment as a case study. This approach allows for the assessment of current best practices in regard to limited budgets and the determination of specific dynamic carbon targets for the building stock. Results show the misalignment of global goals with current practices and present the magnitude of effort that would be required to have a chance to limit global warming to 1.5°C or 2°C. An adequate, interconnected, and interdisciplinary carbon-targets definition is needed to align stringent global climate goals with local climate strategies. The proposed methodology allows for this definition at different scales and sectors in a specific context.

2024

The carbon impact of buildins' slabs :

Conference ArODES

hotspots, challenges, and opportunities

Yasmine Priore, Lucile Schulthess, Thomas Jusselme

Proceedings of the 37th PLEA Conference on Sustainable Architecture and Urban Design, 25-28 June 2024, Wroclaw, Poland

Link to the conference

Summary:

Considering the urgent call to tackle climate change, reducing greenhouse gas emissions from the built environment becomes a priority. Slabs in multi-family houses are responsible for a high share of building’s life carbon emissions due to their intrinsic multi-functional nature and high quantity of materials. This research evaluates the impact of the different functional layers within a slab component, compares alternative materials with regards to the functional requirements, and assesses promising solutions in the context of element-based carbon budgets. Life cycle assessment, following established standards, is applied to a representative library of slab components. Results reveal that material choices for the structural layer significantly influence the environmental impact, with wood structure exhibiting five times lower carbon emissions compared to a traditional concrete slab and meeting the most stringent carbon budgets for the structural layer. The screed layer is identified as a significant contributor to the overall impact, holding an important relationship between its thickness and mass and the level of acoustic insulation. Only limited options are available to replace the cement-based screed in its functionality and although the acoustic performance and thickness hold a non-linear relationship, further studies are needed to confidently replace this layer with alternative materials.

2023

Embodied net-zero compatible buildings ? :

Conference ArODES

They already exist !

Yasmine Priore, Thomas Jusselme, Guillaume Habert

Proceedings of cisbat 2023, the built environment in transititon, Hybrid International Scientific Conference, 13-15 September 2023, Lausanne, Switzerland

Link to the conference

Summary:

This paper identifies buildings on pathway to meet carbon targets for embodied emissions aligned with global carbon budgets and mitigation pathways. A simplified bottom-up model is used, assessing multiple variations of a new construction archetype to identify the main strategies to achieve the targets. The model estimates the quantities of the main components with a few input geometry parameters. Life cycle emissions are then computed based on predefined building components. The reference building is representative of a typical new construction with standard operational values and massive construction. Strategies evaluate design optimization measures, construction techniques, and materials variations. Results show that (1) characteristics and volume of the building play a determining role. The existence and size of underground floors can determine the achievement of todays and future targets. (2) Construction choices can half emissions just by switching from concrete to wood and using natural insulation. (3) Future improvements in the supply chain of materials do not follow the required reduction pathway determined by the Swiss climate strategy. Net-zero compatible buildings are already possible, it is just a matter of making the right choices.

Stepwise renovation of buildings :

Conference ArODES

what to refurbish first to minimize life-cycle carbon emissions

Yasmine Priore, Lucile Schulthess, Stefanie Schwab, David Rollo, Thomas Jusselme

Proceedings of cisbat 2023, the built environment in transititon, Hybrid International Scientific Conference, 13-15 September 2023, Lausanne, Switzerland

Link to the conference

Summary:

To tackle the upcoming renovation wave, this work evaluates renovation strategies with a life cycle GHG emissions perspective and includes time and sequencing in the decision making process. A case study is used to conduct a full life cycle assessment of renovation strategies in line with the Swiss normative context. Improvements in the operational energy consumption are evaluated with an energy model using the software Lesosai and considering the normative limits from the SIA 380/1. GHG emissions are calculated using the Swiss KBOB data inventory and in line with the SIA 2032 methodology. The renovation measures are then examined individually with the carbon payback time indicator and strategies with cumulative emissions over time in contrast to carbon budgets. Results show that the sequence of the refurbishment steps can increase or decrease cumulative GHG emissions of ca. 30% over the lifetime of the building. Changing a fossil-fuel based heating system is the most impactful measure and must happen as soon as possible. Switching to decarbonized heating systems reduces the carbon effectiveness of subsequent renovation measures but poses the question of energy availability. Fully renovating a building but delaying the change of heating system by only 7 years can compromise the achievement of the carbon targets.

Achievements

PEOPLE@HES-SO
Directory and Skills inventory

Priore Yasmine

Collaboratrice scientifique HES

Main skills

Energy efficiency

Building LCA

Building performance

Sustainable Urban Planning

Collaboratrice scientifique HES

PEOPLE@HES-SO Directory and Skills inventory

Priore Yasmine

Collaboratrice scientifique HES

Main skills

Energy efficiency

Building LCA

Building performance

Sustainable Urban Planning

Collaboratrice scientifique HES

PEOPLE@HES-SO
Directory and Skills inventory