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Architecture | Sustainable & Green

Gaobeidian Railway City

Beijing Institute of Architectural Design

Short description

Developed by real estate company Longfor, Gaobeidian Railway City is located in the CBD of Gaobeidian City, Hebei Province, 800 meters away from the local railway station. The Phase I construction of the project has a total area of 440,000 square meters, among which 360,000 square meters are residences and a kindergarten that are designed as ultra-low-energy passive buildings. Benchmarked against the Bahnstadt Project in Heidelberg, Germany, the project has built the largest smart, ultra-low-energy passive building complex in the world. It is also a national near-zero-energy building demonstration area, a sponge city community, and a green, smart health life demonstration area. It has gained a certification from the Passive House Institute (PHI) in Germany and obtained 3-Star Chinese Green Building Design Label.
The project adopts ultra-low-energy passive technologies such as HVAC system instead of a municipal heating network. Solar energy and daylight are fully utilized. Based on the shape coefficient of buildings and window-to-wall ratio, different building envelopes are adopted to regulate indoor temperature. Joints of all through-the-wall pipes, pipelines and modes are meticulously designed. The thermal bridge, air-tightness and waterproofing are refined. The air ducts are carefully arranged and the air inlets and outlets are placed according to the optimized airflow organization. Using renewable energy, the passive ultra-low-energy buildings are able to increase energy efficiency and achieve the goal of resource circulation, symbiosis and reuse.
Passive technologies are applied to buildings that are 10 to 80 meters high, under the guidance of PHI design standards and national conditions. Besides, the project adopts a performance-based energy use calculation method and makes full use of natural daylighting, ventilating and solar energy, to meet the demanding standards of Passive House Institute (PHI).

The project adopts ultra-low-energy passive building technology. The energy consumption for the heating of those ultra-low-energy residential buildings is 90 percent less energy than the average. The advantages of the project include:
1. High energy efficiency
Ultra-low energy consumption:
The project realizes a reduction of energy consumption by over 90 percent, which contributes to environment protection.
2. High comfort level
The excellent airtight construction blocks haze and helps protect the health of the occupants.
Constant temperature:
The indoor temperature is at 20 to 26℃ throughout the day, providing a pleasant living environment.
Constant humidity:
The air humidity is at 40% to 60%, which is comfortable.Constant oxygen:
The fresh air ventilation system keeps indoor CO2 concentrations below 1,000 ppm, ensuring fresh air in the home.
3. High quality
Doors and windows are noise-resistant. Openings on the partition walls between neighboring residences are set at different positions, to avoid noise interference to the neighbors and secure privacy as well.
The structures are firm, durable and anti-seismic.Clean:
Excellent air tightness reduces dust in rooms. Neat:
Few pipes are installed in the interior, which can reduce energy consumption and keep a low frequency of accessory replacement.

Impact of the project
1. Enhance brand image and public recognition
Through this project, the client Longfor starts on a new path of developing ultra-low-energy green buildings, and establishes a modern corporate image that focuses on protecting natural resources and the environment and giving back to society. It also helps incorporate green building, environment protection, energy conservation and emission reduction into Longfor's corporate culture and strengthens its employees' sense of social responsibility, thus enhancing its corporate image which facilitate its future development.
2. Environmental benefits: reduce resource consumption and pollution, and maintain harmonious coexistence with the environment
Technologies applied in this project can reduce the consumption of coal, electricity, water and other non-renewable resources, alleviate the burden of energy shortage and decrease the emission of CO2 and other pollutants. Through this, it contributes to the friendly coexistence between human, architecture and the environment.
3. Economical benefits: enhance the comfort level and quality of buildings, and greatly reduce the operation cost and maintenance fee
Ultra-low-energy technologies can enhance the indoor and outdoor environment, comfort level and quality of buildings. The optimization of enclosure structures and the systematic application of thermal-insulation technologies create a comfortable and healthy environment which can bring remarkable long-term economical benefits.

Entry details
LocationBaoding City, Hebei Province, China
Lead designerXu Quansheng, Wu Fan, Xi Hongwei
Design teamZhang Hao, Zhang Hui, Yu Zhenqian, Luo Jijun, Li Qingshuang, Chen Dapeng, Qin Chao, Ma Zhihua, Qin Le, Song Lijun, Zhang Cai, Zhu Mingchun
Consultant teamHXP Planung GmbH, LUTHER Design, Institute of Building Environment and Energy at China Academy of Building Research
Photography creditsYang Chaoying
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