Entering the August 1st Design Institute: A Look at Green, Low-Carbon "Black Technologies"

Against the backdrop of the "dual carbon" goals

Green and low-carbon have become

a new direction for the transformation and development of the construction industry

China Construction Eighth Engineering Division Design and Research Institute

In the practice of green and low-carbon building design

Starting with the integration of passive buildings and the application of active technologies

Exploring a one-stop solution for high-level green building design

Next, let's appreciate

the green and low-carbon "black technologies" hidden in building design

 

 

01

 

China Construction Eighth Engineering Division Talent Development Center (Shandong)

Introducing passive design concepts in the early design and planning stages, and integrating low-carbon thinking into the entire design, construction, and operation process. Green and low-carbon technologies are naturally integrated into the building, creating a model of passive buildings. It has successively won many honors, including the Shandong Provincial Excellent Design Award, the Jinan Municipal Surveying and Design First Prize, and the Shanghai Architectural Society Architectural Creation Nomination Award.

 

No.1 Form Factor Control

Through comprehensive simulation and deduction of the building's form, the form factor was reduced from 0.4 to 0.23. The building's form factor is controlled to the extreme, minimizing the building's heat exchange surface. The compact form accommodates more diverse functions, saving limited land resources. Reducing operating carbon emissions by approximately 15% 。

 

No.2 Ventilated Courtyard

The building design incorporates courtyard spaces, providing natural lighting for the interior and reducing the use of artificial light sources. Through lateral openings and the formation of air convection with the surrounding building spaces, the interior spaces obtain natural ventilation, effectively improving the microclimate of the building environment and enhancing the natural feeling of people in the building.

 

No.3 Building Self-Shading System

By analyzing the usage scenarios of the building in different seasons and the solar altitude angle of the region, horizontal shading is specifically used in south-facing rooms to avoid direct sunlight in summer and increase indoor thermal radiation. In winter, the solar altitude angle can just shine into the room, providing sufficient heat for the interior.

 

No.4 Insulation and Decoration Integrated System

An assembled, fair-faced concrete insulation and decoration integrated system is innovatively used on the apartment façade. Compared to the traditional exterior wall construction method of cast-in-place construction, the use of prefabricated and modular components can achieve carbon reduction of approximately 40% achieving energy saving and emission reduction for the building.

 

No.5 Low-e Glass

Low-emissivity (Low-e) glass is used in apartments and classrooms, etc. In summer, it can reflect far-infrared thermal radiation, preventing heat from entering the interior, and in winter, it can keep the indoor heat from escaping. Compared with ordinary glass and the coated glass used in traditional buildings, energy savings of approximately 40% 。 

 

No.6 Solar Coupling Hot Water System

A "gravity-fed solar collector" and a "once-through heating air source heat pump unit" coupling system are installed on the roof of the apartment building to prepare domestic hot water, reducing annual carbon emissions by an average of 51.2 tons 。

 

No.7 Smart Building

Multi-dimensional intelligent systems make the building more "intelligent." Intelligent lighting can adjust the lighting brightness according to the usage scenario, reducing lighting energy consumption; intelligent meetings, intelligent guest control, and intelligent News systems make the overall operation of the building and the organization of various meetings more efficient.

 

 

02

 

China Construction Eighth Engineering Division Green and Low-Carbon Technology Laboratory

With near-zero energy consumption as the design standard, design energy consumption is reduced by more than 65% compared to the standard It integrates the use of active and passive solar design strategies and prefabricated construction methods, making full use of green energy sources such as solar energy, geothermal energy, and wind energy to provide practical experience for achieving zero-carbon buildings.

 

No.1 Insulation and Heat Preservation System & Multifunctional Integrated Ultra-High-Performance Concrete Light Steel Dragon Bone Composite Exterior Wall

The insulation and heat preservation system utilizes the "quilt effect" reducing the overall heat transfer coefficient of the exterior wall to 0.19 W/(㎡·K) and the roof heat transfer coefficient to 0.12 W/(㎡·K). Through high-performance insulation measures on the exterior walls and roof, a "temperature-locking" space similar to an insulated box is formed, greatly reducing the impact of outdoor temperature on indoor temperature, achieving warmth in winter and coolness in summer.

 

The facade uses a multifunctional integrated ultra-high-performance concrete light steel dragon bone composite exterior wall, which is one of the key exterior wall components developed in the "Multifunctional Integrated Cement-Based Enclosure Structure System," a key research and development project of the "14th Five-Year Plan" national key research and development program. This wall panel integrates multiple functions, including structure, insulation, decoration, waterproofing, fire prevention, and durability Using Class A graphene high-efficiency energy-saving insulation materials, the thickness is reduced by about 40%, greatly reducing the wall thickness, and can be suitable for ultra-low energy consumption and near-zero energy consumption buildings in various climatic conditions.

 

No.2 Three-Dimensional Solar Energy

A composite three-dimensional solar energy system is innovatively adopted, with a system installed capacity of up to 24.3 KW, annual power generation of approximately 22,200 KW·h which can cover the building's annual energy consumption and achieve zero-carbon operation of the building.

 

No.3 Photovoltaic Storage Direct Current Flexible

Introducing photovoltaic storage direct current flexible technology, by setting up energy storage devices, flexible power adjustment devices, direct current lamps, and charging piles, etc., together with photovoltaic solar power, forming a closed loop from energy generation to use Photovoltaic power generation can be directly used in end devices such as DC lighting and charging piles, avoiding energy loss caused by conversion. At the same time, by combining energy storage and flexible interaction technologies, it reduces power system fluctuations and ensures stable and reliable power supply.

 

No.4 Geothermal Heat Pump

A ground-source heat pump composite system using buried pipes is used for heating and cooling. The buried pipe heat exchangers are arranged in the surrounding outdoor greenery of the building, with four wells in each group. The U-shaped pipe branches are directly connected to the manifold box, using water as the medium to extract heat from the stable geothermal source. More than 20% energy saving compared to traditional water systems 。

 

No.5  Combination Air Conditioner

The air conditioning terminal uses a heat recovery combination air conditioning unit + VAV variable air volume module, passive cold beam, cold radiant ceiling and fan coil, forming multiple air conditioning terminals. Based on energy saving and consumption reduction, it realizes the comparison of operating effects and energy consumption of various system forms, truly realizing the combination of zero energy consumption and experimental composite scene buildings.

 

No.6 Hydrogen Fuel Cell

In addition to traditional energy storage equipment, the building also adds a hydrogen fuel cell to test the energy supply efficiency and stability of chemical energy. The hydrogen fuel cell generates energy and water through the oxidation of hydrogen fuel, with no pollutants produced throughout the process, making it one of the most environmentally friendly green energy sources currently available.

 

No.7 Smart Management Platform

A customized smart management platform is built in the laboratory, which visually displays the operation status of all equipment in the building in 3D, and processes and analyzes the operation data of various equipment in the building. It can carry out corresponding control strategy research on the building's energy consumption status, achieve 24/7 monitoring, and effectively improve energy utilization efficiency.