Beijing Daxing International Airport officially opened on this Wednesday. Although being one of the biggest airports in the world now with four runways and a 700,000-square-meter terminal area, the airport is walking-friendly — within a walking distance of 600m or 8 minutes, passengers can arrive at the terminal centre from the transport hub. It also offers various new technologies including facial recognition and robotic parking system etc. Besides these, energy and environment is also an important concern.
Energy-saving and promoting renewables are one of the focuses of the new airport, including the use of geothermal energy and PV, stated a director of the Development and Reform Commission of Beijing. To save energy, this new gigantic starfish-shaped airport is supported by eight giant C-shaped columns that let in the sunlight, highlighting the architecture and structure, therefore it minimizes the need to use electrical lighting. There’s also an impressive emphasis on the green space. At the end of the five departure lounges are five themed inner courtyards: porcelain garden, Chinese garden, countryside garden, tea garden and silk garden.
The whole system will include two energy stations of geothermal heat pumps: Station 1 will provide heating in the winter and cooling in the summer for the functional houses south of the main road on the west side and on the east side of the flood storage and detention area. The current energy supply area is 0.51 million square meters, and the long-term energy supply area is about 1.42 million square meters. Station 2 provides winter heating and summer cooling for the functional houses north of the main trunk road on the west side of the flood storage and detention area. The current energy supply area is 461,500 square meters, and the long-term energy supply area is about 1.15 million square meters.
Distributed photovoltaic system has been built in the freight zone, the east runway and the business aircraft area of the airport. The average annual power generation will reach 6.1 million kilowatt hours, accounting for about 1% of the total energy use of the airport. This system opens up a new mode of innovative application of “photovoltaic + airport” and has an exemplary role for further promoting photovoltaic application in the field of civil aviation.
The project is contracted by Beijing Electric Power Construction co., LTD. The construction scale is 5.61MWp (Mega Watt Peak, Peak output power), and the construction scale of the first phase is 4MWp, all using the high-efficiency components of single crystal casting. After the grid connection, 6.1 million KWH of electricity is expected to be provided to the grid every year, which is equivalent to saving 1,900 tons of standard coal, reducing 966 tons of carbon dioxide and 14.5 tons of sulfur dioxide, and simultaneously reducing the emission of various air pollutants.