China's first large-scale demonstration project for zero-carbon renovation of an existing building: China Construction Third Bureau Wuhan Headquarters Office Building

Recently, the project developed by China Construction Third Bureau China State Construction Technology Industrial Park, Block H Headquarters Office Building Following LEED Gold Certification and the Ministry of Housing and Urban-Rural Development's Three-Star Green Building Label Certificate Afterward, it was awarded by the China Building Energy Conservation Association. Zero-carbon buildings Title, Becoming the nation's first large-scale demonstration project for zero-carbon renovation of existing buildings.

 

 

Low-carbon transformation

 

 

The H Building headquarters project boasts a total construction area of 115,300㎡, integrating research, office, conference, and exhibition functions. With its advanced design concept, the project remains firmly rooted in a people-centric approach, aiming to create a healthy, eco-friendly, energy-efficient, and highly replicable three-star green building that has been meticulously designed and carefully crafted.

 

The project is approved through Optimize the energy structure, innovate energy utilization methods, and promote smart, low-carbon operations. Implement strategies to carry out low-carbon renovations and build an eco-friendly office ecosystem.

 

 

While enhancing comfort, the China Construction Third Bureau headquarters building incorporates more Energy-saving and carbon-reduction strategies, Can Reduce carbon emissions by approximately 45%, Average annual carbon emissions Reduce by 2,200 tons, Meet the requirements of the "Zero-Carbon Building Evaluation Standard" and achieve zero-carbon building standards.

 

▲ Headquarters Building's Energy Storage Equipment

 

Additional增设 Energy storage system, Rated capacity: 1,000 kilowatt-hours; maximum adjustable power load reduction equals the baseline power load. 20%, The building's flexible response time is less than 120 seconds, meeting the demand for zero-carbon building flexibility and adjustment.

 

▲ Building System Adjustment Diagram

 

Installation of a fresh air system and addition of a heat recovery section Variable frequency control function, Flexibly adjust the fresh air volume based on indoor occupancy density and meteorological parameters, while the lighting system, integrated with the zero-carbon smart operation platform, creates an even more intelligent solution. Adaptive lighting control strategy, All 16 elevators are fully equipped. Energy feedback device, Achieving a 25% energy-saving effect can save electricity each year. 140,000 degrees.

 

Low-Carbon Park

 

 

Located in the headquarters building China State Construction Technology Industrial Park: A Low-Carbon Campus (Also known as China State Construction·Optics Valley Star), it is located in the dual-core area of Optics Valley Central City and the Wuhan Area of China (Hubei) Pilot Free Trade Zone within Wuhan East Lake High-tech Development Zone. Developed by China State Construction Third Bureau, the project boasts a total floor area of 1.08 million square meters, featuring a diverse mix of业态 including 5A-grade Class-A office buildings, the China Building Science Museum, an international convention center, a Marriott hotel, and integrated commercial-residential developments. At its core, the park focuses on the building technology industry, bringing together sectors such as design and R&D, financial capital, and industrial services to create a pioneering model of industry-city integration.

 

Industrial park Innovate energy supply methods and fully leverage Renewable energy, Optimization Exterior envelope structure, Application Zero-Carbon Smart Operations Platform, Equipped with an Integrated Solar-Storage-Charging Station These measures will help achieve the goal of reducing carbon emissions by 30%.

 

▲ Integrated Energy Station Wastewater Source Heat Pump

 

Built The first comprehensive energy station in Central China, primarily focused on sewage heat recovery and utilization, featuring multi-energy integration and an integrated "source-grid-load-storage" system. Through High-pressure variable-frequency sewage-source heat pump unit with water thermal energy storage technology The highly efficient coupling leverages the original cooling water system, which typically operates at temperatures of 30–34°C during summer. Meanwhile, the treated wastewater from the sewage treatment plant usually maintains a temperature range of 20–26°C in summer. By transferring heat from the cooler original cooling water to the warmer wastewater, the system achieves a significant temperature reduction of 6–10°C, thereby cutting down on the electricity required for air conditioning. Similarly, in winter, heat can be extracted from the higher-temperature wastewater to provide heating, further reducing energy consumption. This innovative approach allows up to 70,000 tons of treated wastewater to be transformed daily into "a city's second source of energy," dramatically boosting overall energy conversion efficiency. In summer, the system delivers a cooling capacity of 14,400 kilowatts, while in winter, it provides a heating capacity of 15,700 kilowatts.

 

▲ Aerial view of the park's photovoltaic modules

 

Multiple spaces within the park—including rooftops, sky bridges, light wells, and basement entrances—are equipped with installations. 14,000 square meters Single-crystal silicon photovoltaic panels with an installed capacity of 2.1 megawatts, Can contribute approximately each year 2 million kilowatt-hours of clean electricity, reducing carbon dioxide emissions by approximately 1,050 tons.

 

▲ Schematic Diagram of Curtain Wall Insulation Film Coverage

 

To enhance the building's thermal performance and reduce heat gain during summer, heat-insulating films will be applied to selected glass curtain walls and exterior windows in Project Plots E, G, H, and I. The insulation rate reaches 72%, Total Solar Shading Rate Over 60%, Annual savings can be achieved 1.33 million kilowatt-hours of electricity, Reduce carbon dioxide emissions Approximately 700 tons.

 

▲ Zero-Carbon Smart Operations Platform

 

The application utilizes the independently developed technology of China Construction Third Bureau. Zero-Carbon Smart Operations Platform, Achieve Full-process carbon management, multi-objective energy optimization, and system efficiency enhancement. This platform integrates IoT and AI technologies across seven key subsystems—Source, Grid, Load, Storage, Control, Carbon, and Transportation—to enable real-time optimization of energy equipment within the park. As a result, the platform has achieved a 23% reduction in energy costs, boosted management efficiency by approximately 40%, and slashed operational carbon emissions by 15%, injecting strong digital momentum into the project’s sustainable development.

 

To achieve efficient energy management, the building is equipped with 3,000 sensors that monitor 15,000 points in real time, enabling "second-level data collection, minute-level alerts, and hour-level adjustments." Leveraging AI algorithms, the platform analyzes the sensor data to forecast energy supply and demand for upcoming periods, automatically generating the most optimal operational strategies to coordinate various energy-generation and consumption devices. For instance, by analyzing weather conditions and historical energy usage patterns, the system can predict the building's electricity, cooling, and heating needs over the next 24 hours, allowing it to proactively optimize energy distribution. This approach not only enhances overall energy efficiency by 15% to 20%—all while maintaining indoor comfort—but also enables the office areas to dynamically adjust lighting based on natural daylight and occupancy levels, reducing energy consumption by more than 35% compared to conventional lighting systems.

 

▲ Integrated Solar-Power Storage and Charging Station

 

Park Layout Integrated photovoltaic-storage-charging station, Equipped with Liquid-cooled supercharging system and integrated photovoltaic-storage-charging control, Properly store and intelligently distribute the electricity generated by photovoltaics, thereby establishing a system that Intelligent microgrid system.

 

Source: China Construction Third Bureau Official WeChat Account, Changjiang Daily