Van Hoecke – Halux NZEB offices
Sint-Niklaas, Belgium, Europe
|Total technical installations cost:
|€ 2.141.916,62 excl. vat
|Total construction cost:
|€ 6.542.048,23 excl. vat
|K Level / Energy class :
|Nearly Zero Energy Building
The new office building of “Van Hoecke-Halux” in Sint-Niklaas mainly consists of landscape offices in combination with some meeting rooms and a refectory. The office building is divided into two units; partial volume 1 is located at the level of the south facade of the existing warehouse (Prins Boudewijnlaan), partial volume 2 is located at the level of the north facade (Europapark-North). The office building complies with the “NZEB level” determined by the Flemish Government, which corresponds to an E-level lower than or equal to E40. The annual energy demand reaches a minimum of 10 kWh/year per m² of usable floor area from renewable energy sources by means of one or more systems.
The building envelope has a very favorable thermal conductivity coefficient in combination with high-quality double glazing with integrated automatically controlled sun blinds.
The office building is equipped with demand-driven ventilation in function of the indoor air quality and temperature. The adiabatic air group is equipped with a heating and cooling coil, with the great advantage that cooling of air is passively possible without using compressor energy. The high-efficiency heat exchanger ensures that the warm extracted local air transfers a considerable part of its useful heat to the fresh supply air. A bypass over the heat exchanger allows you to enjoy the “free cooling” effect if the outside temperature drops below the room temperature.
The heating and cooling of the building is mainly done by a heat pump that is connected to the BTES field. Depending on the season, energy in the form of heat or cold will be stored in the ground. The heat pump is also equipped with passive cooling where cooling is almost free of charge, excl. energy circulation pump.
The wood boiler provides the additional capacity to provide the showers with sanitary hot water, the wood chips are obtained as a residual product in the production of “Van Hoecke”.
The basic cooling and heating is obtained by concrete core activation, the remaining power is further supplied by convectors as the end element in the room.
Both the front and rear building are equipped with photovoltaic panels that supply part of the site with power.
The control system is equipped with a KNX controller that controls, among other things, the climate control, lighting and sun blinds.