Sluiseiland, Vianen: A customized WTW system for every home

The Sluiseiland in Vianen is getting a new destination as a residential area. Within the three plan sections of Kop Zuid, Centraal and Kop Noord, a total of 184 will be built, including 56 apartments, 89 townhouses and 39 homes in C.P.O. All homes will be gasless, energy efficient and highly insulated. "A good ventilation system is essential to allow both the homes and residents to breathe, ensure their health and comfort and prevent moisture problems," said Olivier Lagerwerf, project manager at STEBOMA's IJsselstein office. "On behalf of Smit's Bouwbedrijf, we are equipping 139 homes with a heat recovery system. Because no home is the same, all WTW systems are engineered exactly to order."

STEBOMA's WTW systems provide a comfortable and healthy indoor climate in living rooms, bedrooms, bathrooms, kitchens and toilets. "In ground-level homes, the heat exchangers are mostly installed in the technical room in the attic," says Lagerwerf. "A standalone duct in the roof here ensures the supply and removal of sufficient air. In the apartments, on the other hand, a technical closet is set up, where the intake and extraction of air takes place via collective ducts (down pipes)."

Optimal comfort, minimal energy consumption

CO2 sensors will be installed in the living rooms and bedrooms, enabling demand-controlled ventilation. "As soon as the CO2 values here exceed a predetermined limit, the heat exchangers will automatically ventilate in a higher setting. Just until the CO2 levels are back to normal," Lagerwerf said. "In this way, polluted indoor air quickly and efficiently makes way for fresh, oxygen-rich air. Thanks to the combination with heat recovery, it's wonderful to live throughout the home without requiring a lot of energy." In the bathrooms and kitchens, a three-level control was chosen.

Good flushing in every room

The ventilation capacities of the WTW units range from 235 to 378 m3/h. "Based on the design drawings from Smit's Bouwbedrijf, we determined the capacities per dwelling," Lagerwerf said. "Here we paid explicit attention to any overflow between individual ventilation zones. In several homes, for example, the living rooms and kitchens are in an open connection, which places specific demands on the supply and extraction of air. To ensure a good flushing of fresh air in these areas as well, our extensive expertise came in handy."