“ In combination with our chilled-beam and underfloor displacement cooling system, the fans enhance user comfort. The air circulation also helps when humidity is high. Dr. Guiyi Li, Director
Envisioned in 2010 as Hong Kong’s first zero-emission building, ZCB is so efficient it returns surplus electricity to the local power grid. However, the humid, subtropical climate presents unique challenges – temperatures range from pleasant in winter to stiflingly hot and humid in summer. ZCB has no need for mechanical heating, but it requires an ingenious ventilation and cooling solution. Installing a typical, inefficient air conditioner would have caused ZCB to be unable to meet the designers’ goal of striking a balance with nature.
ZCB is designed for optimum ventilation, but ventilation alone isn’t enough to keep occupants cool in summer. Designers incorporated several active cooling features, including a floor cooling system and a chilled-beam convective air conditioner. ZCB also installed Big Ass Fans® – 11 Essence®, one Powerfoil®X and six Haiku® fans – to further improve ventilation, localized cooling and distribution of conditioned air. The system is much more efficient than typical air conditioning, helping ZCB maintain its status as the premier eco-building in Hong Kong.