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Construction new office building with conference space DCM, Grobbendonk, BE Studiebureau Boydens


In 1966, Herman De Ceuster founded the company 'Grondontsmettingen De Ceuster’, whose love of nature focused primarily on environmentally friendly fertilization solutions in horticulture.   Today, GroupDC (DCM) has expanded to several subsidiaries worldwide with three divisions each with their own specialty: Plant care, Animal care and Biosciences.
The new 4 story office building in Grobbendonk consists of the following: a basement level with storage space and technical rooms, the ground floor with reception area and possibility for hosting events and two office levels for DCM
Early in the design process, there was a solid commitment from the and the construction design team to realize a building with progressive sustainability requirements.
From this point of view, a CHS (Cold & Heat Storage) thermal energy storage system was chosen for cold and heat production, using 2 ground bores for extracting and discharging heat.
CHS uses groundwater to store energy, this 'open system' stores excessive heat during the summer which is extracted during the winter months for heating purposes. The reverse is also applicable; storing excessive cooling which occurs during the winter months to utilize during the summer months via passive cooling, always with the use of a heat pump installation.

In order to subsequently distribute the heat or coolness in the building, CCA (Concrete Core Activation) is mainly used, whereby the structural concrete slabs are used as thermal regulators in the building. An additional challenge in such a concept is to provide a zone arrangement that still allows building users to control their own comfort levels per zone. For this reason, the building was divided into a number of user zones for which the CCA can be modulated separately. On the other hand, there is a reheating coil per zone that allows the local temperature to be adjusted with a fast-reacting system.

For ventilation of hygienic air, a system D ventilation is used, in which heat recovery is applied. Each zone is also equipped with a VAV (Variable Air Volume) valve to adjust the flow rate in function of the actual occupancy in the space concerned on the basis of a CO2 measurement.

To ensure that everything runs smoothly, a protocol for building automation is involved in the project, which integrates the controls for HVAC, sun protection and lighting.
As a result, the building user will be able to operate both temperature, lighting and sun protection via a single control panel per zone.
All lighting fixtures are LED dali dimmable to adjust the lighting level according to what is required on the basis of daylight control.
Finally, a photovoltaic installation with a maximum production of 30 kWp was included to meet the sustainability criterion.


general data

total cost price: € 5.500.000,00 hors TVA

total area: 2.820 m²

Study start date:: December 2016

completion date: December 2018

nature of work: Construction: Study and following up MEP / EPBD reporting

cost techniques: € 1.445.124,00 excl. VAT


K-level: 30
E-level: 30
Certification: NZEB (Nearly Zero Energy Building)


De Ceuster Meststoffen nv, Bannerlaan 79, 2280 Grobbendonk, BE


Schellen Architecten bvba, Boslaan 26, 2820 Bonheiden, BE