Terrendis supplies 41 geothermal probes 185 meters deep for the Australian National Memorial: an impressive project in the Somme region.
Terrendis, filiale du groupe Elydan spécialisée dans les tuyaux flexibles pré-isolés et réseaux de chaleur, a fourni les sondes géothermiques dans le cadre de la construction du Centre Sir John Monash, sur le site du Mémorial National Australien situé à Fouilloy dans la Somme. Un choix à la fois économique, écologique et esthétique pour ce lieu de recueillement. Avec 41 sondes de 185 mètres de profondeur et de diamètre DN 40, ce chantier d’une envergure hors norme a nécessité une logistique unique et une organisation millimétrée.
« Ce projet d’une ampleur remarquable est une référence pour Terrendis dans le secteur institutionnel. Le développement des installations EnR nous conforte dans le choix d’avoir créé et soutenu cette activité au sein du groupe ELYDAN, depuis plus de 20 ans », indique Marc-Antoine Blin, Président du Groupe Elydan.
The Sir John Monash Centre, built on the site of the Australian National Memorial, is part of the Australian Way of Remembrance, a series of memorial sites in France and Belgium created by the Australian government to pay tribute to its servicemen who died on Australian soil to liberate France in the First World War.
The Australian government, sensitive to sustainable development, wanted to find an ecological solution that would reduce the building's energy impact, without affecting the landscape of the site as wind turbines or solar panels might, given that this is a place of worship.
The memorial's architects opted for geothermal energy, with ENGIE Axima and Weishaupt, specialists in burners, boilers, heat pumps and geothermal energy, working under a joint contract for the HVAC and geothermal energy package.
Weishaupt, the company responsible for geothermal collection, chose Terrendis probes, which are perfectly suited to the memorial's context, combining ecology, sustainability and aesthetics.
"We turned to Terrendis because they are the only French manufacturer of geothermal probes. The company had already convinced us of the quality of their products and their expertise on previous projects. What's more, Terrendis probes come with a 30-year warranty, and the chosen solution offers low energy costs for both cooling and heating the building", explains Christophe Luttmann, SGV Geothermal Drilling Development Manager at Weishaupt.
The European Regional Development Fund (ERDF) has contributed to the financing of this project, with the aim of making the Memorial a benchmark for the promotion of geothermal technology in France and Europe.
To manufacture such large probes, Terrendis had to adapt the production and packaging of its products. Instead of the usual 24 probes per truck, the probes were shipped in reels of 4 probes, an unusual and particularly complicated logistical operation.
Weishaupt installed the geothermal collector on this site, using a destructive casing drilling technique. This involves installing temporary casings in the ground, with a narrower tool inside for destructive drilling, to prevent the ground from collapsing.
The work will be completed around Anzac Day 2018, the centenary of the Battle of Villers-Bretonneux. The site is in the process of being listed as a historic heritage site, and potentially as a UNESCO site.
Terrendis supplied Double U vertical geothermal probes with a diameter of DN 40 and a depth of 185 meters, designed to capture heat from the ground. A heat transfer fluid transports the energy transmitted by the ground via the vertical geothermal probe, which is then released by a thermodynamic system (heat pump) to heat or cool the building.
Manufactured in PEHD1 type PE 100 RC and compliant with standard NFX 10960, Terrendis probes are entirely manufactured and tested in France, at the Saint-Étienne-de-Saint-Geoirs plant.
Dans le contexte général de réduction des gaz à effet de serre, groupe ELYDAN propose aujourd’hui, via Terrendis®, des produits destinés à préserver l’environnement et à lutter contre la déperdition énergétique, avec des standards de qualité parmi les plus exigeants du marché. La solution de tubes flexibles pré-isolés permet de remplacer ou de compléter les solutions plus anciennes et rigides comme le tube acier calorifugé. Terrendis innove également avec des solutions en géothermie horizontale, sondes verticales ou les corbeilles destinées à récupérer la chaleur du sol.
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