EURO 2024 Copenhagen
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2322. Exploiting synergies between heat supply and demand through endogenous modelling of building envelope retrofits

Invited abstract in session MC-19: Multi-energy systems, stream OR in Energy.

Monday, 12:30-14:00
Room: 44 (building: 116)

Authors (first author is the speaker)

1. Julian Hermann
Chair of Energy Systems Analysis, Department of Mechanical and Process Engineering, ETH Zurich
2. Corsin Taisch
D-MAVT, ETH Zurich
3. Christoph Domenig
Department of Mechanical and Process Engineering, Chair of Energy System Analysis
4. Russell McKenna
Laboratory for Energy Systems Analysis, Paul Scherrer Institute

Abstract

The built environment has a large share in energy consumption and CO2 emissions in Europe, mainly caused by fossil fuel-based heat supply. In the energy transition context, a drastic decarbonisation of the existing building stock is required. Additionally, there is a significant potential for heat demand and emission reduction via envelope retrofits, which can also reduce required heat supply temperatures. Strong interactions occur between heat supply and demand, requiring a holistic assessment of investments on both sides. However, energy system optimisation models usually treat heat demand profiles as static inputs without considering envelope retrofits or treat retrofits in a simplified way using pre-defined sets. In both cases, the heat demand is exogenous and cannot be altered. Only a few studies endogenously consider envelope retrofits and their impact on heat demand.

This work presents a mixed-integer optimisation model to overcome the abovementioned limitations. Our model includes a simplified representation of the building’s thermal behaviour, allowing us to consider investments in envelope retrofits and supply technologies endogenously. Comparing our methodology with existing approaches, we can show that considering envelope retrofits endogenously can yield more optimal results. Thus, our methodology enables exploiting synergies between investments in envelope retrofits and heat supply technologies.

Keywords

Status: accepted

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