- Building Type : Office building < 28m
- Construction Year : 2013
- Delivery year : 2013
- Address 1 - street : 6220 FLEURUS, Belgique
- Climate zone : [Cfc] Marine Cool Winter & summer- Mild with no dry season.
- Net Floor Area : 529 m2
- Construction/refurbishment cost : 1 320 000 €
- Cost/m2 : 2495.27 €/m2
Primary energy need :
(Calculation method : )
As part of the expansion of Kumpen's activities in Wallonia, a new office building with an office and an industrial storage hall was built in Fleurus.
Respect for the environment and the comfort of the staff were the driving forces of the project. Thanks to the know-how of the design and execution teams combined with the quality of the materials, the building complies with passive principles and is autonomous in energy.
See more details about this projecthttp://www.startech-group.eu/nosreferences/
ContractorKumpen Owner and construction company
DesignerStartech Management Group Barattucci Marcel Mission of architecture and energy performance studies of the building
Other consultancy agencyBureau d'étude Boydens
Owner approach of sustainability
The client's approach was to build a regional operating center of the Kumpen company from an energy point of view and to highlight the competence of this construction company in building construction at very high High energy performance. The project is designed with a view to sustainable development by: • Choosing the level of the soil slab to optimize the cuttings / embankments using land cleared on site (stabilized with lime), which limits the transport of land to the discharge and thus the cargo and limits the embankments with the neighboring lands, • The passive design of the offices, by the installation of the following elements: Excellent compactness of the protected volume, Limitation of thermal losses by an excellent thermal insulation of the walls , mastery of the construction nodes in order to limit their impact, control of the air tightness of the envelope. Particular attention has been paid to limit summer overheating by: • the orientation of the building to the west limiting the excessive solar contributions during the period of occupancy of the offices, • the reduction of internal inputs by the use of high-performance lighting, • the placement of automated external blinds, • the excellent thermal inertia provided by the use of a concrete structure. • the choice of high energy production equipment and / or renewable energy: Heat pump and geothermal probes, Dual flow ventilation system with heat recovery, A lighting installation high-performance LEDs with automatic ignition via presence sensors, a roof-mounted photovoltaic system. • The choice of durable materials requiring little or no maintenance (façades made of solid wood panels on the hall) • Recovery of rainwater by 2 tanks of 10,000 L disposed close to the drawings for use of sanitary facilities Offices and filling tank trucks for the water needs of the road works, • Limiting as much as possible the amount of rainwater discharged into the sewers by: compensating for the reduction of the permeable surface of the soil following the construction of the building by rejecting the waters storm. limiting impermeable surfaces (tarmac) in favor of draining zones: storage and storage area in dolomite, parking in sidewalks in draining pavement, etc.), shrubby plantations to catch water from the soil. Moreover, the construction of this building in self-construction allowed this company to increase its experience in the construction of buildings with very high energy performance and thus train its entire team in some innovative positions (implementation enabling to limit the construction nodes, placement of barriers of sealing with the air ...).
On the one hand, the project includes a storage hall for the goods necessary for the smooth running of the sites and which can not be delivered directly, a small buffer stock for the good advancement of construction sites and small equipment and tools for workers and , on the other hand, offices for staff responsible for the management of construction sites and for the study of new projects to be developed in Wallonia. The West orientation was favored for the offices so as to limit the summer solar contributions during occupation period. The offices are therefore installed perpendicularly to the road network. They are of relatively compact shape and articulate on two levels. In order to boost volumetric play, the separation wall between the "Storage Hall"; and "Offices" was extended outside the building. The choice of facade cladding materials also makes it possible to distinguish these two functions. The facades of the storage hall are made of solid wood panels. A dark-colored brick lining is the ground floor of the offices, while a light-colored insulation has been placed on the facades of the floor. A slight overhang reinforces this distinction between the two floors. The entrance of the building is marked by a complementary volume welcoming an entrance airlock which makes it possible to limit the entrance of cold air in the protected volume. The interior layout of the offices was designed in the following way: All the service rooms and the stairwell are grouped together and located along the separation wall with the hall. This interior design makes it easier to adapt office and meeting space to meet changing business needs. The technical installations of heating, ventilation, cooling ... are placed in the storage hall. The approaches have been designed to facilitate the accessibility of the construction vehicles: two accesses are present from the road and a large maneuvering area is provided at the rear of the building.
Building users opinion
The occupants moved into the building at the beginning of January 2014 when the outside temperatures were very low. In March 2014, the degree of satisfaction of the occupants was very good.
- 38,00 kWhep/m2.an
- 207,00 kWhep/m2.an
- 15,00 kWhef/m2.an
- 0,21 W.m-2.K-1
Real final energy consumption
- Geothermal heat pump
- No domestic hot water system
- Geothermal heat pump
- Chilled Beam
- Double flow heat exchanger
- Solar photovoltaic
- Heat pump on geothermal pile
- 19,00 KgCO2/m2/an
Indoor Air quality
Health & Comfort
WSHN / WSH-XEE 82-802
Génie climatique, électricité / Chauffage, eau chaude
Heat pump coupled with geothermal probes to ensure heating production.
10 geothermal probes were installed at a depth of 100m. The system is based on the following principle: Winter regime: the heat of the ground is extracted for the heating of the building, the water circuit arrives at the pump at 10 ° c to come out at 35 ° towards the cold beams. Summer regime : The inertia of the soil which remains cooler than the exterior provided cold; The heat pump is bypassed and the brine goes directly to a free-cooling exchanger. In the mid-season, when there is a simultaneous need for heating and cooling, the heat pump and the heat exchanger operate in parallel simultaneously and optimally. This solution makes it possible to dispose of the cold at a lower cost in summer, contrary to the solution (air-water), but requires a greater basic investment. (+/- 30,000 € vs. 8,000 €) estimated depreciation at 7-8 years.
The building is located in the industrial zone of Martinroux in Fleurus. It is of appearance and template similar to the type of industrial buildings located in the zoning. It is implanted parallel to the separative limit with recoil.
Land plot area
5 046,00 m2
There are parking spaces for cars on site. A maneuvering area is provided at the rear of the parcel for construction site vehicles and a storage area. The coatings of the parking areas are made of draining paving stones. The storage and outdoor storage areas are dolomite coated.