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Moreover, in addition to the envelope having high-energy performance, the client wanted to diversify the energy supply sources and favour renewable energies. In so doing, the client wanted to showcase innovative technologies to visitors which they can apply and demonstrate how these technologies complement each other:
- biomass (wood pellet boiler / miscanthus)
- earth-to-air heat exchanger
- geothermal cooling
- adiabatic cooling on rainwater for the CTA
- solar thermal energy
- solar photovoltaic energy
- urban wind turbines
As for the health and well-being of those using the building, being the company occupying the block, PROgroup want to promote the well-being of its staff, on the one hand by organising "brainstorming" sessions to ascertain its employees’ needs and wishes and on the other hand by very carefully selecting materials and technical solutions that would guarantee optimal interior air quality and high summer/winter hygrothermal comfort.
This aspect was brought into focus during the triple DGNB/BREEAM/HQE certification process, in particular by achieving HQE "Exceptional" certification level during the building phase and DGNB "Gold".
Furthermore, the requirements with regard to rental arrangements were set down in a contract so as to guarantee energy, acoustic and sanitary performance while the site is being operated.