Project Case丨198 meters! China's first super-high-rise zero-carbon building

Recently, China's first super-high-rise zero-carbon building (China Energy Construction Shanghai Headquarters Integrated Project Office Building), designed by the East China Institute of Electric Power Engineering of China Energy Construction, was successfully selected into the second batch of "Green and Low-Carbon Advanced Technology Demonstration Project List" of the National Development and Reform Commission, and ranked first among the demonstration projects in the building field in the process of carbon reduction.

 

 

The project is located in the core area of Shanghai's Binjiang, with a building height of 198 meters. The entire project adopts a zero-carbon building design, forming a number of innovative technologies such as "high-performance unit curtain wall integrating large-scale integrated ventilation, heat insulation, and power generation functions", "low-carbon emission ground source heat pump chiller unit coupled with water storage air conditioning system", "large-scale building-integrated photovoltaic super-high-rise building curtain wall", and "large-capacity 'photovoltaic storage direct flexible' microgrid system", leading the new trend of zero-carbon buildings.

 

 

After completion, the project's annual comprehensive energy saving rate can reach 60.85%, with an annual renewable energy power generation of more than 1.22 million kilowatt-hours, meeting most of the building's electricity needs. The load adjustment ratio will reach more than 38%, and it will have the ability of flexible grid coordination in the future, which is of great significance in the construction of a new power system. ‌ The project has obtained China's first batch of zero-carbon building certification and near-zero energy consumption building certification.

 

 

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Reduce Demand——Passive Building Design

The project adopts a high-performance enclosure structure. The main part adopts a high-performance unit glass curtain wall, with heat insulation performance more than one-third higher than that of ordinary curtain walls, which can effectively reduce the loss of cold and heat in winter and summer. In terms of appearance design, the curtain wall exterior uses an integrated design of organic vertical shading components and shading ventilators, which can effectively block excess sunlight, avoid indoor overheating, achieve natural ventilation in the transition season, reduce air conditioning energy consumption, and save energy.

 

 

Improve Efficiency——High-efficiency Electromechanical System

The project adopts ground source heat pump technology. A total of 384 ground source wells are arranged in the entire plot, with a well depth of 120 meters. The comprehensive COP for winter heating can reach more than 4.0, which means that for every unit of energy consumed, more than four times the heating effect can be produced, reducing energy consumption and efficiently meeting the project's winter heating needs. At the same time, it is equipped with two dual-condition refrigeration units, which can not only prepare low-temperature chilled water during the daytime in summer to meet the project's cooling needs, but also, according to local electricity price policies and control convenience needs, make ice and store ice during the off-peak hours at night using a large-capacity ice storage tank, to achieve the goal of reducing the building's peak electricity load and operating costs.

 

 

 

Reduce Emissions——Renewable Energy Application

The project applies advanced photovoltaic power generation technology. Through building-integrated photovoltaic (BIPV) design, high-efficiency power generation components are installed on the roof and non-light-transmitting parts of the building facade, with a conversion efficiency of more than 16%, generating electricity for the project's use, reducing daily conventional electricity consumption by 15%, and effectively reducing the consumption of traditional fossil energy.

 

 

Fine Control——Intelligent Energy and Carbon System

The project sets up an intelligent energy and carbon emission management system to accurately measure various forms of resources and energy in the project, which can statistically analyze the project's energy consumption and production capacity, publish carbon emission data, and provide real-time feedback on the status of various energy-consuming equipment, quickly identify abnormal situations, provide timely reminders, and ensure its smooth operation. Through the deployment of advanced sensors and algorithms, it can also accurately predict the next day's load, optimize the settings of the heating and cooling sources and HVAC equipment, improve operating efficiency, and achieve high-efficiency machine room standards.

 

 

Assist Operation——Flexible Electricity Regulation

The project sets up a DC power consumption area, uses DC appliances, and uses photovoltaic power generation on-site to reduce energy loss in intermediate conversion. At the same time, it adopts various flexible load regulation methods to effectively achieve building energy regulation, reduce peak load by about 50%, and, as a regional virtual power plant and "energy lighthouse", coordinate multiple energy consumption scenarios in the surrounding area to achieve zero-carbon operation during operation.

 

 

 

Content Source: China Energy Construction Urban Development Company, East China Electric Power Design Institute

Article Source: Youlvwang