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The Construction Industry Council (CIC) Zero-Carbon Building is a net zero-carbon building that was designed for local hot and humid climate of sub-tropical Hong Kong. Over 80 sustainability features of the architecture and building systems have considered the life-cycle carbon emissions, including the embodied carbon of construction materials, emissions associated with the construction process, the 50-years of operation and decommission of the building. The total life-cycle carbon emission was off-set by on-site renewable energy generated by photovoltaics (PV) and bio-diesel combined cooling heating and power (CCHP) system. To optimise the design, a series of climate-responsive strategies on passive architecture were applied to the construction of the building. These include the high-performance facade, effective air tightness and optimised window design that allows the application of natural ventilation and daylighting. Reduction of 20% energy demand was achieved by these passive designs. To further lower the carbon emission on operation, energy-efficient air-conditioning (A/C) systems using desiccant dehumidification, underfloor air supply and radiant cooling have also contributed on achieving an ultralow energy use value. Amalgamated saving of these passive and active systems are over 45% when compared with the design per existing local building energy codes.

Design and commission a zero-carbon building for hot and humid climate