Energy-saving and carbon-reducing Vanke model - Shenzhen Vanke Center headquarters office building lighting design case explanation

Shenzhen Vanke Center Headquarters is the headquarters office building of the listed group Vanke Group Corporation, with a total construction area of ​​118,900 square meters and a total of six floors. Designed by Stephen Hall, the representative of contemporary American architects, it is called “lying skyscrapers”. If you erect it, it is about the same as the US Empire State Building. The 60,000-square-meter building base, in addition to the eight traffic-supporting themes, is generally suspended, and can still be circulated by sea breeze and mountain wind, and is completely open to the public.

The surface of Vanke's new headquarters building is a “transparent” translucent and reinforced lightweight carbon fiber. The wall in each direction is calculated by annual solar energy collection, which controls the switch and angle of the louver to ensure lighting and temperature. Energy-saving 75%, Vanke headquarters office building is applying for the highest certification of the world's green buildings - the US LEED Platinum certification.

Tridonic Lighting Electronics (Shanghai) Co., Ltd. provided industry-leading digital addressable lighting dimming technology and products (DALI brightness sensor; DALI digital dimming rectifier; DALI digital dimming transformer) for the project, integrated with SAFTOP The intelligent control system is seamlessly connected, and with NVC's high-efficiency lighting fixtures, it creates a smart office environment that is energy-saving and quiet, intelligent and intelligent, reflecting the development trend of integrated and intelligent office in the 21st century. The project successfully applied for the international green energy-saving building LEED Platinum Award to lay a solid foundation.

Introduction to DALI Digital Technology:

DALI technology means: Digital Addressable Lighting Interface, an interface standard for data communication between lighting control devices. The biggest feature of this technology is that it can independently address and accurately control individual lamps. Although these lamps are the same circuit or different circuits in strong power, there is no direct connection between lighting control and high-voltage lines. The so-called single-lamp single control does not require a single circuit for each luminaire, but independently addresses multiple luminaires on the same high-voltage circuit or different circuits to achieve individual control. This concept gives the control a great deal of flexibility. Users can design the lighting solution to meet their needs as needed. Even after the installation, the control parameters can be arbitrarily modified without any changes to the line. . At the same time, the traditional wiring method can be retained, the structure is simple, the function modules are relatively few, the debugging is also very convenient, the installation is simplified, the cost is reduced, and many functions that cannot be realized by the intelligent control system based on the loop control can be realized. At the same time, DALI technology is two-way communication, which can not only send control commands, but also feedback the working status and fault information of digital control devices such as ballasts and even light sources, which brings great convenience to routine maintenance and centralized management. Many intelligent lighting control systems based on loop control are one-way communication, which can only send control commands and cannot feedback the working status and fault information of the ballast or even the light source.

Advantages of DALI technology

1, energy saving

According to professional statistics, the lighting power of smart buildings accounts for about 20% of the total electricity used in buildings. In fact, in most cases, many areas do not need to open or turn the lights to the brightest. Excessive lighting not only causes light pollution but also wastes energy. In today's energy shortage and the country's vigorous promotion of energy conservation, the use of intelligent lighting management systems to maximize energy savings has very practical significance.

2, efficient management

There are a large number of lighting circuits and large capacity. How to improve the stability and reliability of operation, make control and operation simpler, more convenient and more flexible, make management more automatic and efficient, and reduce a lot of simple and repetitive labor, which is the focus of lighting design considerations. . According to the lighting requirements of different areas, the system should be able to provide different control means, such as dimming, scene, constant illumination, motion and static detection, etc., easy to use and flexible, and efficient management.

3. Humanization

The intelligent lighting management system not only can realize basic lighting control, but also can improve the quality of the lighting environment through scenes, dimming, automatic control, etc., so that employees can work happily and efficiently in a comfortable and warm, high-quality light environment. .

LEED certification requirements for lighting:

1. Adopting light-sensing sunshine compensation and human body induction design, using natural lighting as much as possible to save energy. The illuminance detector is installed to detect the illuminance, and the opening and closing and opening degree of the indoor light are controlled according to the outdoor lighting condition; the human body sensing detector is installed to detect the situation of the independent small space personnel, and the person lights up and the person goes out. control. Maximize energy savings while providing a comfortable light environment.

2. Realize the control of light pollution: use low-angle, full-cut light fixtures to control light pollution, minimize light leakage in buildings and sites, reduce sky glare, improve sky visibility and perspective, improve night sky environment, reduce The impact of the night environment.

3. The combination of background illumination and work illumination is used to provide high illumination only for places that require high illumination, and the rest of the space provides background illumination. It plays a very important role in the energy consumption of lighting.

4. Controllability of the lighting system: Provides separate lighting control for at least 90% of the users, ie more than 90% of the users can adjust the lighting to their working needs and desired levels through separate controls. It also provides control of the lighting system for all shared multi-user spaces, allowing it to be adjusted to meet the needs and expectations of the group.

DALI digital technology energy saving function:

1. Digital technology is mainly used in the control of energy-saving light sources (fluorescent lamps and LEDs). Digital energy saving dimming

From the beginning of development to the application of the control system, the main control light source is energy-saving light source (fluorescent light and LED), because the facts and light source technology prove that fluorescent light and LED are the most energy-saving, most cost-effective and most widely used light source in current lighting, so Digital technology fully considers the requirements of lighting energy saving in selecting the control type of light source.

2. The digital dimming device itself has the highest energy saving rating. Energy-saving lamps require electrical appliances to illuminate the light source.

The electric appliance itself also consumes a certain amount of energy, so the energy saving of the lamp dimming device itself needs to be paid attention to. The energy-saving rating of digital dimmers is currently the highest for all lighting appliances (A1+).

3. The application of the digital dimming function greatly reduces the energy consumption of a single luminaire. Lighting for many projects was initially invested

The illumination when in use is very bright, and in many cases the illumination does not need to be fully illuminated, such as the projection and speech scenes during the conference. Therefore, the digital dimming function is applied to forcibly limit the maximum effective brightness of a single luminaire when the lighting is initially put into use, and then adjust the maximum effective brightness of a single luminaire according to the use of the project. In addition, according to the requirements of the activity on the lighting, the lighting of certain areas can be dimmed to achieve energy-saving effect. It turns out that the digital dimming function can save an average of 30% of the energy in a single luminaire.

4, digital energy-saving dimming control application intelligent solar light compensation indoor lighting and incoming sensor lighting function, in

While fully satisfying humanized lighting, the energy saving effect is very significant. Modern buildings are very well lit, and the role of corridors in connecting the interior spaces of buildings is becoming more and more important. Therefore, how to maximize the use of sunlight to supplement indoor artificial lighting, and how to manage effectively in areas where lighting is not needed, is The main aspects of achieving good lighting energy savings. Digital energy-saving dimming control Thanks to the application of digital light sensing technology and digital human body sensing technology, it can accurately and accurately ensure the maximum use of sunlight to supplement indoor artificial lighting, and the unmanned area to avoid unnecessary over-illumination. Maximum energy savings while ensuring the need for lighting functions.

Implemented control functions:

1. Timed automatic call scene: According to the schedule of Shenzhen Vanke Center, it is divided into several different time periods, and each time period corresponds to one scene mode (such as morning mode, afternoon mode, evening mode, off-duty mode, etc.). These scenes are preset in the controller and are automatically called according to time. This method is performed automatically without human intervention.

2, brightness sensor constant illumination automatic control: the use of brightness sensor, according to the external light automatically adjust the brightness of the light,

Thereby maintaining a constant illuminance (pre-set such as 300 lux). This method not only performs automatically, but also requires no human intervention. At the same time, it makes full use of natural lighting, and changes the conventional lighting to fill light, maximizing energy saving on the basis of meeting environmental lighting requirements. In addition, the control of this mode is very accurate. For example, in the scene control, the brightness is adjusted to 60% during the period of 2:00-7:00 PM, but it happens to be rainy on cloudy days. It is necessary to manually adjust the brightness of the room.

3. The designer designed the DALI dimmable T5 luminaire in the staff area to ensure the work lighting needs of each employee. The T5 luminaire is equipped with a digital dimmable ballast and an ordinary jog switch. Adjust the ideal illuminance according to your own habits and work needs, and meet the personalized lighting without affecting the work of others.

Because of the advanced nature that DALI technology can't match, the precise and perfect control effect, the standardization of technology and the excellent openness, digital lighting applications are rapidly popularized and popularized around the world, and the use of digital lighting is also becoming a design trend. And application trends.

( Note: The project won the third prize of China Lighting Engineering Design in 2010)

Edit: Sophy