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Beijing’s Encapsulated ‘Parkview Green FangCaoDi’ Has Its Own Energy-Efficient Microclimate
Parkview Green FangCaoDi is a 800,000 sq ft mixed-use development and is quite possibly one of the largest sustainable projects in the city. The collaborative design work of Integrated Design Associates and ARUP created a unique solution to minimize energy use. The large glass pyramid structure encases two nine-storey and two 18-storey towers housing a office space, a six-star hotel and retail facilities. The glass and ETFE envelope works to minimize heating and cooling in the winter and summer. Specially designed louvers at the top allow hot air to escape and natural ventilation and free cooling modes to be operated when outdoor condition is desirable. This buffer zone is a controlled microclimate in which the temperature and humidity is relatively uniform and easily changed.
A geothermal system allows for energy-efficient heating and cooling when necessary. These hybrid passive and active mechanical systems save 60% on cooling costs in the summer and 80% on heating in the winter. The development collects rainwater from the roof and paved areas, which is then filtered and recycled for use as irrigation water. Waste water from sinks, showers and washing faucets is also treated for flushing and landscape irrigation. Materials were chosen based on their sustainability and the structure includes recycled materials from building demolitions for back-filling of the site and steel. Quickly growing softwoods were used instead of hardwoods, and native plants and trees were selected for their low water and low maintenance needs.
Images ©Parkview Green and ARUP
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