Forum Wood of Marvejols in Lozère

[Christophe]

Wood conferences

On the occasion of the fifth edition of Forum Bois which will take place in Marvejols from September 24 to 26, the Chamber of Commerce and Industry of Lozère will offer a technical conference on Friday September 24. Specialists in wood energy and the wood industry will speak at conferences open to all at the cultural hall of Marvejols.

Technical conference: detailed program of conferences on Friday 26 September

- Supply at local level with local resources: organization of supply at the level of a commune or canton, by Jean Luc Mivière, forest consultant specializing in wood energy (FAIG bé) and small scale platform manager.

- Combining trades and skills to create a departmental / regional offer: presentation of the history and results of the creation of SCIC PIcardie l'énergie-bois, by Gérard Léthurgie, director of SCIC Picardie l'énergie-bois

- News from the wood-energy markets in France and in Europe: findings, developments and business opportunities, by Frédéric Douard, editor-in-chief of BioEnergie International.

- The regulatory context, by Jean Philippe Peloux, DRIRE.

- Using wood in public buildings: testimonies and examples of construction, by Yves Perret, architect.

- Wood construction, anything new? New construction systems, wood treatment, CE marking, by Jean Marie Haquette, CNDB.

Fair: a rich and lively weekend

The esplanade and the multipurpose room of Marvejols will welcome on Saturday 25 and Sunday 26 September more than 40 exhibitors from the wood, wood energy and wood industry trades. This weekend will also be an opportunity for the public to make visits to wooden houses and boiler rooms, to try a felling simulator, to benefit from demonstrations of all kinds (pruning, shredding, forestry machinery ...) , and to attend a logging competition on Sunday organized by the MFR Ecole Forestière de Javols.

More information from the Chamber of Commerce and Industry of Lozère or on the website of Forum Wood of Marvejols, www.forum-wood-lozere.com

Exhibition hours: Saturday 25 and Sunday 26 September, from 9 a.m. to 00 p.m.
Place: Multipurpose hall and Esplanade, Marvejols

Le Forum Bois is listed as an unmissable event in the region. Created in 2004 by the Chamber of Commerce and Industry of Lozère in order to promote wood in construction, wood industry and wood energy, the Forum Bois has been able to expand and evolve over the years to reach an age of maturity today, which has earned it ever greater recognition from the general public and professionals alike. The Forum du Bois is a well-built partnership bringing together Europe, the Languedoc-Roussillon Region, the Departments of Lozère and Gard, ADEME, the Municipality of Marvejols and the CCIs of Lozère, Nîmes and Alès .

CONTACTS
Organization:
Lozère Chamber of Commerce and Industry, Lozère and Gard wood-energy mission & Wood Industry mission
16 bd du Soubeyran - 48002 MENDE cedex / Tel: 04 66 49 00 33 - fax: 04 66 65 35 29

[Christophe]

PRESS RELEASE: Mende, Monday September 6, 2010

Interview with Claude De Sousa, exhibitor at Forum Wood 2010: A heating network and a unique supply platform in Aumont-Aubrac

Commissioned only a few months ago, the automatic wood-fired boiler of SARL Tec ENR in Aumont-Aubrac heats, via a buried heating 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 houses. 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 for repair of the heating system of the workshops and administrative offices of Gemarin and Gaillard-Rondino. They wanted a renewable energy heating system. So I offered them a common wood boiler where the idea of ​​creating a central boiler with a heat network using as fuel their waste wood.

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 heat network is separated into two parts, a very high temperature part for feeding wood driers and the second part for heating supply of 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 allows to have a dry and 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).

SARL Claude De Sousa and Tec-EnR will be present at Forum Wood on stands 15 and 46 and will offer a tour of the automatic wood-fired boiler with heating network and the supply platform:
Sunday, September 26, at 14:30 p.m. on the Esplanade de Marvejols (meeting point at the start of the tours). Travel in private cars, carpooling.

[Christophe]

And another interview on the BBC

The first BBC * labeled wooden house in Lozère qualified as "the most waterproof house in France" (* BBC: Low Consumption Building)

In February 2010, the ORLHAC sarl company built the first BBC labeled wooden house in Lozère (Maison LAGLOIRE in Montrodat) according to the plans of the architect Nathalie Crépin. The results of the infiltrometry test (Q4 = 0,07) allowing the labeling of the building, present a performance far superior to that necessary for the BBC label (Q4 = 0,60) and even to that of the PASSIVE label (Q4 = 0,20, XNUMX).

The tests passed hands down, this wooden house has been qualified as "the most waterproof house in France ..." by SIRTEME, certification body. The Grenelle 2 law, published in the official journal on July 13, 2010, aims to improve the energy efficiency of buildings and the harmonization of planning tools.
In view of this publication, this construction built in February was even avant-garde given the new regulations and test results.

Questions to Jean-Pierre Orlhac, builder and Nathalie Crépin, architect

CCI: Can you clarify what a BBC house is?

JPO: It is a low energy house. The BBC-Effinergie designation is an energy performance label for buildings. It designates new buildings whose very low energy needs (for heating, domestic hot water, ventilation, ...) make it possible to considerably reduce consumption and therefore the cost of operating the house, but also its emissions. of greenhouse gases.

NC: A BBC house also has every interest in respecting the criteria of a bioclimatic building to make the most of environmental benefits before using technology (photovoltaic solar, solar thermal, heating system, etc.). Bioclimaticism makes it possible to use, from the design of a house, the advantages of the microclimate of the site of establishment (sunshine, prevailing winds, inertia of the ground, etc.) without neglecting the human aspect of the project, that is to say ie functionality and comfort. A bioclimatic house must strive for energy autonomy thanks to a symbiosis with its natural environment.

CCI: What are the difficulties in implementing this type of work? and what is an infiltrometry test?

JPO: To make a high-performance, energy-efficient, healthy and comfortable home for its occupants and at an acceptable cost, it is necessary to adopt
a global approach from the design of the house.
We will pay particular attention to ensuring the compactness of the house, its orientation, the level of insulation of walls and joinery, airtightness, the choice of ventilation and heating system.

Obtaining the BBC-Effinergie Label requires a very high level of insulation, but it also incorporates an imperative parameter: control of the airtightness of the walls. This involves eradicating the parasitic cold air inlets, which can represent 25% of the heat losses of traditional buildings (cold air inlets by the intakes, on the perimeter of the openings, by the roof, ...) .
The purpose of the infiltrometry test is to measure these parasitic air leaks and penetrations. To do this, a “blower door” and pressure sensors are installed connected to a computer for controlling the measurements. The building is pressurized and vacuumed to simulate the effect of the wind on the exterior walls and thus measure the rate of air renewal by leaks. This test was carried out during construction (self-control phase) and at the end of construction to verify that the house meets the requirements of the BBC-Effinergie label.

The results of the infiltrometry test are excellent (9 times better than the requirements of the BBC label, 3 times better than the MAISON PASSIVE label) and confirm the performance of the "Low Energy ORLHAC" wood frame wall developed by our office. internal study, manufactured and implemented by the ORLHAC team of carpenters.

CCI: What are the difficulties in designing this type of project?

NC: The labeling of a BBC building is obtained following tests and studies mainly thermal and energy. The difficulty in the design of this type of building is that the thermal requirements must not take precedence over all the parameters relating to the design of the project: functionality, integration into the site, comfort of life, and costs, etc. The project Mr. and Mrs. Lagloire is a success in this respect, because no aesthetic and functional concession (eg accessibility) has been made at the expense of its thermal performance.

CCI: Is wood a particularly suitable material for designing BBC homes?

JPO: This is absolutely correct. The wooden construction, well designed and well mastered, is in an excellent position to meet the requirements of thermal performance and control of construction costs. Wood is also a natural, renewable and clean resource, which has a beneficial effect on the global warming potential: it allows to store a significant amount of carbon; between 20 and 30 tonnes for a single house.

NC: The advantages of designing a BBC wood frame house are multiple. This offers more freedom for the integration of windows or bioclimatic greenhouses. The wood also facilitates the junctions between the vertical walls, the horizontal walls and the openings. The building gains in consistency and therefore the thermal bridges and air are reduced. Thanks to a prefabrication in the wood frame workshop, the duration of the assembly on site is fast and the risks of approximation diminished.

CCI: A misconception is that wooden buildings have a shorter lifespan than so-called "traditional" buildings (concrete, bricks, stone ...). What do you think ?

JPO: There are no particular difficulties with the sustainability of wooden constructions. There are many examples in France and abroad. Here, one of the oldest houses in Saint Chély d'Apcher, Miss BONNET's house, is a half-timbered house with a wooden supporting structure ... Of course, as with all construction materials, wood requires good design and implementation know-how.
NC: This idea is understandable, here in Lozère, because historically the building material was stone. In regions (eg Alsace) or countries (eg Sweden) in which buildings were built of wood, this preconceived idea does not exist. There are buildings with several centuries built in half-timbering (ancestor of the wooden frame), or adobe houses.

CCI: Do you think it is possible and profitable to design BBC buildings of larger dimensions (semi-collective buildings, crèches, schools, ...)?

JPO: Of course. The search for thermal performance, control of operating and heating costs, occupant well-being and respect for the environment is just as present in collective buildings. Large BBC buildings appear here and there: social housing, schools, crèches, administrative buildings. In 2009, we participated in the construction of a “Passive” administrative building of 350 m2: Although it is located in an unfavorable climatic zone, this building does not need a traditional heating system or air conditioning.

NC: The larger the building, the easier it is to design it in BBC because the more compact the building can be made, the more it reduces the surface of the outer walls and therefore the sources of waste. Today, for example, I work on the design of a wooden dwelling in Ispagnac, which is common to several families. The combination of buildings allows a reduction of energy expenditure.

CCI: What is the future of the wooden house and the BBC in Lozère?

JPO: Environmental challenges, energy management and changes in regulations will lead us to prefer constructions with low energy consumption. To achieve this, wood will remain a reliable, comfortable, economical solution that respects our environment.
NC: Following this experience, I direct all my sites towards a tightness test because it brings a guarantee in the quality of the implementation. More companies will experience the BBC more this implementation attention to detail will become obvious.

Moreover, Lozère being the department with the lowest average temperature, the energy expenditure related to heating is important, so the return on investment is very fast. This should logically be very incentive for the development of the BBC in Lozère.

Questions to Mr and Mrs Lagloire, project leaders

CCI: Why and how did you come up with the desire to build this type of house?

SL: At the beginning, we did not know the concept of BBC, we wanted a bioclimatic house and integrated into our construction environment (semi-urban environment, Caussenarde atmosphere). We therefore called on Nathalie CREPIN who was aware of bioclimatism. She designed the house on these principles with the added constraint of accessibility for a person in a wheelchair. On these bases, we deposited the building permit on February 6, 2010 and obtained two months later. At this point, we still had no notion of BBC.
Then, during a discussion with Mathieu COUDERC, in charge of renewable energies for the Department, we discovered the BBC and its financial advantages (energy savings and tax advantages). Very quickly, we sought information and local artisans to adapt our project to BBC requirements. We met the ORLHAC company which worked on wooden houses with high energy performance. The seriousness and the motivation of this company decided us to engage in the adventure of the BBC. So we brought together all the companies we plan to work with and we exposed our BBC project to them and since no craftsman had experience in this area, we asked them if they agreed to play the game and all have accepted. We would also like to thank them again because they have been great in the quality of their work.

CCI: Why wood? Is it easy to carry a wood house project in Lozère?

SL: My parents own a wooden frame house which came directly from Germany and for thirty years it has been built, it has always been as comfortable and reasonably energy consuming. Looking at the design of this house, we saw that the Germans were far ahead in terms of wood construction.

CCI: How long did it take from the idea of ​​the project to the layout in your house?

SL: The idea of ​​the BBC project stricto sensus emerged on April 13, 2009 when we met Mathieu Couderc (the permit was already obtained) and we moved in on August 26.

CCI: Is there an additional cost in this project compared to a so-called "classic" house? Is it compensated and how?

SL: Basically, we had a house with an original design (warhead greenhouse), specific equipment (Canadian well, dual-flow ventilation, solar thermal, solar photovoltaic, solar shading), we used materials that are still little used by craftsmen (wood wool, fermacell, larch tiles) which increases the cost compared to a so-called classic construction, but it was a personal choice. The cost of the house is estimated at € 1 including tax / m600. With experience, we have learned that you can still do BBC for a lower cost. In our opinion, the BBC is above all a reflection (often simple common sense) on the orientation of the house, the insulation, the choice of materials and electrical equipment (ventilation in particular) and above all, above all excellent quality. of implementation on the parasitic air tightness and on this last point, the ORLHAC company brilliantly showed that it was very competent.

Under the Forum Bois 2010, a visit to the first BBC-labeled wooden house in Lozère is offered by Sarl Orlhac: Saturday, September 25, at 14:30 p.m. on the Esplanade de Marvejols (meeting at the starting point of the visits) - travel by private car, co- car

Meet SARL Orlhac on stand 38 during the Forum Wood.