A pan-European planning basis for estimating the very shallow geothermal energy potentials

Bertermann, David; Klug, Hermann; Morper-Busch, Lucia

doi:10.1016/j.renene.2014.09.033

Cited by 61 publications

(34 citation statements)

References 44 publications

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“…Another potential data set dealing with thermal conductivities of the underground would have been the outcomes of the European ThermoMap project [8]. Within this project, a pan-European outline map providing the very shallow geothermal potential (vSGP) was developed and expressed within ThermoMap-MapViewer [9]. The pedological data set for creating the pan-European outline map was provided by the ESDAC's (European Soil Data Centre) TXSRFDO (Dominant surface textural class) for STU (soil typological unit) or by national datasets for different test areas on a small-scale level.…”

Section: Data Acquisitionmentioning

confidence: 99%

Generalized Pan-European Geological Database for Shallow Geothermal Installations

et al. 2018

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The relatively high installation costs for different types of shallow geothermal energy systems are obstacles that have lowered the impact of geothermal solutions in the renewable energy market. In order to reduce planning costs and obtain a lithological overview of geothermal potentials and drilling conditions, a pan-European geological overview map was created using freely accessible JRC (Joint Research Centre) data and ArcGIS software. JRC data were interpreted and merged together in order to collect information about the expenditure of installing geothermal systems in specific geological set-ups, and thereby select the most economic drilling technique. Within the four-year project of the European Union’s Horizon 2020 Research and Innovation Program, which is known as “Cheap-GSHPs” (the Cheap and efficient application of reliable Ground Source Heat exchangers and Pumps), the most diffused lithologies and corresponding drilling costs were analyzed to provide a 1 km × 1 km raster with the required underground information. The final outline map should be valid throughout Europe, and should respect the INSPIRE (INfrastructure for SPatial InfoRmation in Europe) guidelines.

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Section: Data Acquisitionmentioning

confidence: 99%

Generalized Pan-European Geological Database for Shallow Geothermal Installations

et al. 2018

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“…Bertermann [17,18] made a detailed study of the very first shallow layers (down to 10 m depth, very shallow geothermal potential vSGP), and created a WebGIS dynamic tool within the framework of the Thermomap Project. The method did not, however, consider seasonal changes in subsoil temperature due to heat flux variations.…”

Section: Introductionmentioning

confidence: 99%

Suitability Evaluation of Specific Shallow Geothermal Technologies Using a GIS-Based Multi Criteria Decision Analysis Implementing the Analytic Hierarchic Process

et al. 2018

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Abstract:The exploitation potential of shallow geothermal energy is usually defined in terms of site-specific ground thermal characteristics. While true, this assumption limits the complexity of the analysis, since feasibility studies involve many other components that must be taken into account when calculating the effective market viability of a geothermal technology or the economic value of a shallow geothermal project. In addition, the results of a feasibility study are not simply the sum of the various factors since some components may be conflicting while others will be of a qualitative nature only. Different approaches are therefore needed to evaluate the suitability of an area for shallow geothermal installation. This paper introduces a new GIS platform-based multicriteria decision analysis method aimed at comparing as many different shallow geothermal relevant factors as possible. Using the Analytic Hierarchic Process Tool, a geolocalized Suitability Index was obtained for a specific technological case: the integrated technologies developed within the GEOTeCH Project. A suitability map for the technologies in question was drawn up for Europe.

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“…However, their results were obtained for a short period (200 h) during which the soil condition did not vary significantly. Bertermann et al [14] analyzed very shallow geothermal energy potentials for Europe based on the annual mean air temperature and constant thermal properties derived from relatively simplified data sets. Finally, as noted by Spitler and Bernier [15], most models of GHEs rely on extreme simplifications of the surface boundary conditions and they identified the study of near-surface effects as one of the future research needs on GSHP systems.…”

Section: Introductionmentioning

confidence: 99%

A simple heat and moisture transfer model to predict ground temperature for shallow ground heat exchangers

et al. 2017

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. A simple heat and moisture transfer model to predict ground temperature for shallow ground heat exchangers. Renewable Energy, Elsevier, 2017Elsevier, , 103, pp.295 -307. 10.1016Elsevier, /j.renene.2016 A simple heat and moisture transfer model to predict ground temperature for shallow ground heat exchangers Maha Chalhoub, Michel Bernier, Yves Coquet, Mikael Philippe Highlights• Ground source heat exchangers need better models to account for surface effects.• Simple heat transfer model in the ground using accessible weather data is proposed.• Soil temperature is well predicted for the first 1.5 m below the ground surface.• Surface cover and site-specific conditions are necessary to predict soil temperature. AbstractA simple model is proposed to describe transient heat and moisture transfer in the soil under moderate climates to predict near surface ground temperatures using a minimum set of variables and easily accessible weather data. The model is computationally efficient enough to allow for multi-year simulations of shallow ground heat exchangers. It uses a realistic representation of the interactions between the main processes occurring at the soil surface and the heat and moisture dynamics in the soil including the influence of water content on soil thermal properties. The model has been tested against soil temperature measurements taken at different depths (from 0.06 to 1.5 m) on a grass-covered site. Measurements, including meteorological data, were recorded with a time step of 10 min for one year. It is shown that the agreement between soil temperatures predicted by the proposed model and measurements is relatively good for either dry or rainy conditions. Average errors are between +0.47 and + 1.63 °C. Furthermore, this study shows that a proper account of the soil surface cover and site-specific soil properties is necessary to obtain accurate soil temperature predictions.

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A pan-European planning basis for estimating the very shallow geothermal energy potentials

Cited by 61 publications

References 44 publications

Generalized Pan-European Geological Database for Shallow Geothermal Installations

Generalized Pan-European Geological Database for Shallow Geothermal Installations

Suitability Evaluation of Specific Shallow Geothermal Technologies Using a GIS-Based Multi Criteria Decision Analysis Implementing the Analytic Hierarchic Process

A simple heat and moisture transfer model to predict ground temperature for shallow ground heat exchangers

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