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A circular by design environmentally friendly geothermal energy solution based on a horizontal closed loop - HOCLOOP

CORDIS fournit des liens vers les livrables publics et les publications des projets HORIZON.

Les liens vers les livrables et les publications des projets du 7e PC, ainsi que les liens vers certains types de résultats spécifiques tels que les jeux de données et les logiciels, sont récupérés dynamiquement sur OpenAIRE .

Livrables

Project and data management plan (s’ouvre dans une nouvelle fenêtre)

The deliverable will contain the Project and data management plans in a single report. The DMP will describe how the data will be managed in a secure, reproducible auditable and compliant manner following the FAIR principles. The project management plan will consist of the integrative management which is consolidated at different processes: cost, resources, communication, content and delay, risk, purchase and legal aspects.Will also address open access to research data, and explain how to deal with it. The Data management plan will address and guarantee open access to research data.

Benchmark cases (s’ouvre dans une nouvelle fenêtre)

Procedures for benchmarking geothermal simulators will be developed in the task. Building analytical solutions for the temperature in an injection well and the surrounding rock, we will define cases for software validation.

Optimized design for the closed loop geothermal system (s’ouvre dans une nouvelle fenêtre)

We will run a series of numerical simulations of different well designs to find the optimal design with regard to different well-depth, length, diameter, rock properties, fluid circulation rates and tubing properties. The simulations will quantify the decline in power over years of production. We expect the results to show that quite different well designs may produce nearly the same power. The optimal well designs form the basis for the development of actual sites.

Flow pipe model for fluid circulation (s’ouvre dans une nouvelle fenêtre)

The report will contain a description of the different available tools for well modeling and results for different well configurations using water as pipe-fluid. The available models for the heat flow towards geothermal well from Task 2.1 will be integrated in models for the heat and fluid flow in the annulus and the central pipe. We will see how a model for heat flow towards a geothermal well can be coupled with advanced state-of-the-art models for pipe flow, either commercial software (i.e., OLGA Dynamic Multiphase Flow Simulator) or in-house tools. Using CFD advanced models for the pipe flow, we will predict the flow regime in the pipes, in case of multiphase flows, and test the heat transfer coefficients that control the heat flow from the well-wall interface to the fluid. We will add details to the numerical grids for better resolution of the heat flow between the inner tube and the annulus and the structure of the near well area.

Results of underground simulations and loop optimisation at the pilot sites (s’ouvre dans une nouvelle fenêtre)

For each site, first the input parameters, resulting from the data collection phase in T4.1, will be summarized and their quality will be discussed. Second, the simulation procedure to define the static thermal and, if relevant, stress state at the pilot sites as well as the results of the simulations will be presented. Then the conceptual closed loop systems designed specifically for each pilot will be described as well as the different scenarios used to assess the long-term energetic performance of the conceptual systems. The results of the dynamic simulations obtained using the simulation tools developed in T2.3 will be discussed. The results matrix summarizing the geological KPIs defined in tasks T5.1 and T5.2. for each site will be presented in D4.2.

Report on heat transfer modelling and circulation within the borehole (s’ouvre dans une nouvelle fenêtre)

The Deliverable will include the outcomes of the next items:1) 1D Modelling the heat transport and circulation features (e.g., Natural thermosyphon effect) of the CO2 and advanced CO2 solutions with home made and commercial tools2)Assessment of the most suitable Equations of State (EoS) for modelling flows sCO2 and its smart mixtures3)Extension of the simple models for fluid flow in the pipe, (1-D stationary incompressible) to models with a compressible fluid, such as CO2, considering the change of fluid properties with temperature and pressure4)CFD refinement of circulation models in some relevant points of the closed loop, to better assess the flow and properties behaviour5)Comparison of natural thermosyphon effect, heat transport and circulation between sCO2 based fluids and water.

Conceptual design and techno-economic feasibility study (s’ouvre dans une nouvelle fenêtre)

The deliverable will contain a description of the different possible conceptual pre-designs of both the underground loop and the above ground energy system for each of the pilots. Through the input of Tasks 4.1 and 4.2, the team will explore different conceptual pre-designs of the underground loop and the above ground energy system for each of the pilots are worked out by the respectively pilot leader. Based on the designs a more detailed energy flow simulation is performed to calculate the different KPIs defined in Task 5.1 and 5.2. The deliverable will include a multi-criteria analysis of the most promising pre-design and their corresponding preliminary P&ID plan, CAPEX and OPEX estimation.

Evaluation of industrial application potential (s’ouvre dans une nouvelle fenêtre)

Evaluation and preliminary assessment of integration of the HOCLOOP concept in current and future industrial systems.

Innovation exploitation, communication and dissemination plans (s’ouvre dans une nouvelle fenêtre)

Provide documents with updated plans.

Annual report 1 (s’ouvre dans une nouvelle fenêtre)

First Technical annual report of the project HOCLOOP

Innovation exploitation and communication (s’ouvre dans une nouvelle fenêtre)

The deliverable will include the innovation management tools and the exploitation pathways, including the communication/dissemination portfolio and updates.

Report on social acceptance (s’ouvre dans une nouvelle fenêtre)

This report presents results from the analysis of the community acceptance of geothermal energy by closed loops. The report includes mapping and examining how stakeholders contribute to shaping acceptance at the local level.

Risk Management Plan (s’ouvre dans une nouvelle fenêtre)

The deliverable will contain the risk management plan of the project, describing how the risks of the project will be handled, estimating their impact and drafting out the mitigation measures.

Validation of cylinder geometry-based simulation of the closed loop geothermal system (s’ouvre dans une nouvelle fenêtre)

Comparison with analytical solutions will validate the numerical simulations of the coaxial borehole heat exchanger in cylinder coordinates. The comparisons will be based on the analytical solution of Ramey 1962. The validation considers the size of grid cells necessary to represent steep temperature gradients close to the well and the required radius of the surrounding rock to avoid boundary effects.

Conceptual industrial designs (s’ouvre dans une nouvelle fenêtre)

Results of simulations for the integrated industrial HOPCLOOP systems.

Annual report. 2 (s’ouvre dans une nouvelle fenêtre)

2nd Technical annual report of the project HOCLOOP

Pilot sites data and integration analysis (s’ouvre dans une nouvelle fenêtre)

Report with data and information related to the local geology and current/future above ground energy system including in-depth knowledge of the business and technical issues to be studied. The report includes the User Requirements Specification (USR) and a first schematic overview on different integration options of the HOCLOOP concept in the energy system.

Publications

Impact of borehole path deviations on the efficiency of a medium-deep geothermal storage system: Case study of the SKEWS MD-BTES Demosite (s’ouvre dans une nouvelle fenêtre)

Auteurs: Matthias Krusemark, Lukas Seib, Max Ohagen, Bastian Welsch, Hung Tien Pham, Ingo Sass
Publié dans: Journal of Energy Storage, Numéro 125, 2025, ISSN 2352-152X
Éditeur: Elsevier BV
DOI: 10.1016/J.EST.2025.116959

Distributed geothermal response test on a 750 m deep borehole thermal energy storage system (s’ouvre dans une nouvelle fenêtre)

Auteurs: Lukas Seib, Matthias Krusemark, Clemens Lehr, Max Ohagen, Hung Pham, Markus Schedel, Bastian Welsch, Ingo Sass
Publié dans: Applied Thermal Engineering, Numéro 273, 2025, ISSN 1359-4311
Éditeur: Elsevier BV
DOI: 10.1016/J.APPLTHERMALENG.2025.126322

Controlling injection conditions of a deep coaxial closed well heat exchanger to meet irregular heat demands: a field case study in Belgium (Mol) (s’ouvre dans une nouvelle fenêtre)

Auteurs: Leontidis, Vlasios; Hernandez, Edgar; Pogacnik, Justin; Wangen, Magnus; Harcouët-Menou, Virginie
Publié dans: Geothermal Energy, 2025, ISSN 2195-9706
Éditeur: Geothermal Energy
DOI: 10.1186/S40517-025-00331-Y

Simulation of Closed-Loop Geothermal Systems (s’ouvre dans une nouvelle fenêtre)

Auteurs: M. Wangen, V. Leontidis, E. Hernandez Acevedo, V. Harcouët-Menou, P. Ungar
Publié dans: 85th EAGE Annual Conference & Exhibition, 2025
Éditeur: European Association of Geoscientists & Engineers
DOI: 10.3997/2214-4609.202410516

The HOCLOOP Project: Tools to Model Heat Extraction From Horizontal Closed Wells (s’ouvre dans une nouvelle fenêtre)

Auteurs: V. Leontidis, E.H. Acevedo, V. Harcouët-Menou, M. Wangen
Publié dans: 4th EAGE Global Energy Transition Conference and Exhibition, Paris-France, November 2023, 2023, ISSN 2214-4609
Éditeur: EAGE
DOI: 10.3997/2214-4609.202321044

THERMO-ECONOMIC ANALYSIS OF A GEOTHERMAL-BASED HIGH TEMPERATURE HEAT PUMP (s’ouvre dans une nouvelle fenêtre)

Auteurs: Pietro Ungar, Daniele Fiaschi, Giampaolo Manfrida
Publié dans: 37th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2024), 2025
Éditeur: ECOS 2024
DOI: 10.52202/077185-0109

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