PDF Publication Title:
Text from PDF Page: 011
Renewal of operations The sustainability of the oldest geothermal heating networks now involves the rene- wal of the systems. Depending on the situation, the existing systems operate as a borehole triplet (drilling of a production well after renovation of the two existing boreholes, in the form of an injection well with a smaller diameter), or are abandoned and replaced by a new doublet. Since 2007, four operations have been renewed in this way for the municipalities of Orly, Sucy- en-Brie, La Courneuve and Coulommiers. At the same time, 3 new operations (dou- blets) have been created: North-eastern Paris, the Orly airport site and Lognes. These recent operations bear witness to the renaissance of deep geothermal energy in the Île-de-France region, which will conti- nue in the coming years (7 renewals plan- ned for 2012 / 2013). Significant development potential There are numerous development pros- pects for low-temperature geothermal energy in mainland France. In the Paris Basin, the attention is focused on the Albian/Neocomian, Lusitanian and Trias aquifers which have significant potentials, especially where the Dogger is less favou- rable or is already highly exploited. In the Aquitaine Basin, the geothermal resources have been exploited for around thirty years via a dozen boreholes, mainly located in the Gironde département.The context is clearly different from the Paris Basin insofar as all of the sites operate on a single-well basis, i.e. without the reinjec- tion of fluid. Alsace and the Upper Rhine Plain offer a geothermal potential that is already exploited in Germany (Bruschal site to the north-east of Karlsruhe).A deep borehole (approximately 2,000 metres) in the Rittershoffen region near Strasbourg, will be used to verify this potential over the national territory. At the international level, the successful operating procedures employed in the Dogger in the Paris Basin could be used as an example for Central and Eastern Euro- pean countries, which are well endowed with low and medium-temperature geo- thermal resources.The Pannonian Basin, the Podhale Basin and the Carpathian Basin all come to mind. Geothermal energy for an eco-district – Dalkia Dalkia - a world leader in energy services - funds, designs and operates numerous geo- thermal installations over dry probes or aquifers at depths of several metres to several thousand metres. For example, Dalkia manages 17 geothermal doublets out of the 36 installations operating in the Ile-de-France region. At Fort d’Issy-Les-Moulineaux, Dalkia is constructing the first geothermal heating net- work that will supply an eco-district, using a warm-water loop. Dalkia will operate this system for a period of 25 years. From 1 January 2013, two geothermal wells drilled to a depth of 600 m to reach the Albien aquifer (28 °C) will supply heating and domestic hot water to 1,600 dwellings, 2 schools, one swimming pool and shops. Heat pumps installed on the ground floor of buildings will be used for the heating and cooling of accommodation and shops. Latest project to be launched: the design, execution and 25-year funding of a doublet in the Dogger (2,000 m at 71°C), which supplies the Lognes heating network (Île- de-France region). Other projects underway: Arcus in Norway (90 dry probes at a depth of 300 m), Le Plessis-Robinson in Île-de-France (two boreholes at a depth of 900 m in the Neocomian: 38 °C), projects in China, etc. Mapping of “cold bubbles” in the départements of Seine-Saint-Denis andVal-de-Marne after thirty years of geothermal exploitation Following the resurgence of deep geothermal energy in the Île-de-France region at the start of the 2000s,ADEME and the BRGM realised the need to efficiently manage the "cold bubbles" that have appeared around injection wells since the start of opera- tions – mainly between 1980 and 1985. Of the 36 doublets currently in operation in the Paris region, 27 are located in Val-de- Marne and Seine-Saint-Denis. Since 2009, a resource management model has been implemented throughout these départements, firstly to improve our knowledge of the size of these cooled areas with a view to optimising the siting of new boreholes in the context of new operations or renovations and secondly,to predict the start of cooling at the production boreholes. Data for this model, implemented by the BRGM, are pro- vided by the DOGGER database, created in 2001 in association with subsurface design offices, which stores all information relating to the operations. Filter of the Lognes geothermal plant (DALKIA) French know-how in the field of geothermal energy 10 / 11 © Norbert Bommensatt – ADEME © Laurent Mignaux – METL - MEDDEPDF Image | GEOTHERMAL ENERGY District heating
PDF Search Title:
GEOTHERMAL ENERGY District heatingOriginal File Name Searched:
french_know_how_geothermal_energy.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)