Le show forum wood of Marvejols presents an automatic wood heating network in Lozère
Interview with Claude De Sousa, exhibitor at Forum Bois 2010: A heat network and supply platform unique to Aumont-Aubrac
Commissioned only a few months ago, the automatic wood boiler of SARL Tec ENR in Aumont-Aubrac heats, via a buried heat network, the buildings of SA Gémarin, the dryers of the Gaillard Rondino company, the multipurpose room, the offices of the Community of Communes, the gendarmerie, as well as two main dwellings.
Back on the implementation of this project with Mr. Claude De Sousa, plumber-heating engineer, who carried out the installation.
CCI: What is behind this project?
C.DS: This project was born following the request to repair the heating system of the workshops and administrative premises of the Gemarin and Gaillard-Rondino companies. They wanted a renewable energy heating system. So I offered them a common wood boiler, hence the idea of creating a central boiler with a heating network using their wood waste as fuel.
It was by asking for the road authorizations for the works that the project aroused the interest of the elected officials. It then took on another dimension by integrating communities into the project.
CCI: Can you briefly describe the heat network that you have put in place in 2009?
C.DS: The heating network is separated into two parts, a very high temperature part for supplying wood dryers and the second part for supplying heating to connected buildings.
CCI: What power does this boiler house represent? Is it now operating at full speed?
C.DS: The power of the wood boiler and 1 MW, to date it is running at 80% of its capacity, because the gendarmerie is not yet connected. As soon as the latter is connected, it will operate at full power.
CCI: How is the supply organized?
C.DS: The supply and supply of timber by the companies Gaillard-Rondino and Hermabessière. A supply platform has been created near the boiler room. It consists of a storage shed which provides dry, quality fuel in order to optimize the installation, and a tarmac area allowing the storage of wood ready to be crushed. The platform is also covered with 1500 m2 of photovoltaic panels.
CCI: Is there a risk of a disruption in the supply of raw materials?
C.DS: No, because the needs of the boiler room are 1000 tonnes per year, while the Hermabessière and Gaillard-Rondino companies produce 3000 and 6000 tonnes of wood residues and scrap respectively. Another sawmill also supplies the platform, this is Sarl BDL de Serverette. So there is still untapped production potential.
CCI: The supply platform can therefore have the vocation of selling forest chips?
C.DS: Absolutely, that is already the case. The platform currently produces 3000 tonnes of wood chips (in addition to the needs of the installed boiler room). These 3000 tonnes are crushed by the company Bois l'énergie de la Canourgue, whose manager is Mr. Régis Clavel. The wafers are calibrated, dried and dusted, which makes it possible to obtain a fuel which can be sold to individuals with small boiler rooms.
CCI: What are the difficulties that need to be faced to put such a project in place? What are the advantages ?
C.DS: The main difficulty is the supply of quality energy resources. It is also essential that there is a proximity between the boiler room and the heated buildings, otherwise the project can be more complex to implement, energy consuming and not very relevant from an ecological and economic point of view. The advantages are the stability of the cost of energy, in the long term, and the existence of financial aid for the realization of projects of automatic wood-fired boilers.
CCI: So you have benefited from public competitions. What are they ?
C.DS: We have benefited from financial assistance from local authorities (Europe, State, Languedoc Roussillon region).
CCI: In the end, is this achievement transferable elsewhere?
C.DS: Yes of course. A feasibility study is still strongly recommended for projects of this magnitude, which will indicate whether the realization is necessary and above all profitable for the potential client (s).