How to choose architectural lighting LED lights

In recent years, with the continuous development of lighting technology in China, especially the continuous application of the latest generation of light source LED in indoor and outdoor, coupled with the trend of energy conservation and emission reduction, new requirements have been put forward for architectural design standards. In this context, the China Development Research Institute of China, the standard development unit, also initiated the revision of this standard.

"The preparation of standards should not only be based on people, create a good light environment, reflect the level of China's lighting technology and promote its development. It is scientific, practical, and forward-looking. It should be based on the actual situation in China and move closer to international standards. At the same time, it must reflect The actual level of China is to achieve advanced technology and economical rationality, but also to achieve easy maintenance, safe use, energy conservation, environmental protection, health protection and green lighting.

Zhao Jianping, deputy director of the China Academy of Building Research Institute of Building Environment and Energy Conservation pointed out. With the development of lighting technology and application, the content of the standard also needs to advance with the times. The revision of this standard will further strictly stipulate energy-saving targets and increase the setting of indicators for LED applications.

LPD refers to the lighting power density, which is the lighting installation power per unit area of ​​a building room or place, in units of watts per square meter. The LPD value is the main index for evaluating building energy efficiency. The LPD limit is regulated. It is related to the energy saving and environmental protection in the lighting field. It will promote the lighting design to fully consider and take into consideration the illumination level, lighting quality and lighting energy efficiency, and promote the promotion and application in design. Efficient light sources, ballasts, lamps and other products. In practical applications, the LPD limits have become an important basis for effective supervision and management of lighting design, installation, operation and maintenance by the relevant authorities, energy conservation and supervision departments.

A major change in the development of the GB50034-2004 standard is to increase the maximum allowable value of LPD for 108 types of commonly used rooms or places in offices, residences, businesses, hotels, hospitals, schools, and industries, except for residential buildings. The LPD restrictions of the other six types of buildings are mandatory standards, which is also the first in the history of lighting design standards in China.

The current global pressure for energy conservation and environmental protection has gradually increased, and the significance of LPD values ​​has become more prominent. It is understood that the current revision of the standard, LPD value may make greater adjustments, so that the LPD value more in line with energy conservation trends and requirements, will focus on how to reduce the LPD value of existing buildings, expand the energy saving of room types in public buildings Standard regulations and other issues.

It should be noted that the specification of LPD values ​​and possible further reductions can be a great challenge for lighting design. For example, in the implementation of the standard reality, the LPD value satisfying the energy-saving regulations and the aesthetic decoration requirements for realizing the building are often “can't have both fish and bear's paw”, and it is also the most troublesome thing for the architect.

Some designers indicated that, especially in hotel lighting design, incandescent lamps or halogen lamps are effective in controlling light. Many hotels, including some foreign hotel chains, will use incandescent lamps in large quantities when they are fitting. The energy-saving aspect will definitely exceed the standard, and energy-saving inspections must also fail to pass. This situation of energy saving and decoration requirements cannot always be combined. This often leads to conflicts between the designer and Party A. "Whether it is focusing on results or saving energy? Or finding a balance between the two requires a clearer standard stipulation," said a designer.

In addition, the realization of green environmental protection, energy conservation and emission reduction is one of the goals set by the standard. In addition to the provisions of the LPD value, for the implementation of lighting energy conservation, industry experts have expressed that the energy saving of the control system is also very important and needs the attention of the industry. Lighting energy consumption, in addition to the light source itself, the overall energy consumption of the lighting system is also very considerable, the control system energy saving is very important, you can achieve intelligent lighting through some control systems, to achieve the second energy saving or multiple energy saving.

Some experts even stated that the LPD value may limit the number of installed lights, but this should not be the whole measure of energy saving. The energy saving achieved through intelligent lighting is considerable, and the status of lighting control should be higher than the value of LPD. However, adjusting the LPD value through dimming technology has a high cost, and it is still necessary to consider carefully whether customers can accept the high cost.

It can be seen that although the decreasing trend of LPD value will be a huge challenge for lighting design, from a certain point of view, the design pressure and challenges brought about by this energy saving requirement will also lead to more considerations in lighting design. Lighting products that help reduce energy consumption provide ample space for LEDs to be energy-efficient and easy to implement.