| Popis: |
The work carried out in this task comprise a screening of the national potential for UTES in the Netherlands, Switzerland, Germany, Denmark and France. Geological, hydrogeological, geochemical, etc. (sedimentary basins, mining basins, host rock formations) have been analysed to identify and characterize locations with more favorable conditions for different types of UTES systems. In the Netherlands, the three different types of subsurface potential maps illustrate a high subsurface potential at a regional scale for HT-ATES in the Netherlands, especially in the western part of the country, where, conveniently, heat demand likewise is high (metropolitan area, greenhouses, high geothermal potential). In Switzerland a spatial multi-criteria play-fairway framework was implemented focussing on the potential of implementation of HT-ATES systems in two main geologic units: the Cenzoic sediments (target of the Bern project) and the fractured Upper Mesozoic carbonates (target of the Geneva project). Subsurface data down to 2000m in depth as well as surface constraints have been combined to produce a set of favourability maps representing different potential scenarios. In Germany focus was directed to the Ruhr-area thanks to its significant amounts of former collieries and the biggest population density in Germany. This offers a big potential to include MTES to modern low-ex-heat grids. In France the ATES potential is evaluated according to available public data, by combining subsurface data (e.g. depth of the targeted geological formation, thickness, petrophysical parameters, temperature distribution at different depth, geochemistry of waters), surface data (e.g. location of district heating and cooling networks, land occupation) and energy data (e.g. heat demand, heat demand distribution in time, excess heat sources, excess heat supply in time, geographical distribution). The results show that HT-ATES could be implemented in the Dogger carbonate reservors, therefore can play a key role in increasing the share of waste heat onto DHN In Denmark targeted geological characterization was carried out in five selected sites based on the results of a survey of interest and subsequently dialog with several interested utilities. An important criterion in this work has been to cover different geological settings in the Danish subsurface and thereby cover cases of regional relevance for a wide group of stakeholders. |
