In recent years, high-rise buildings, commercial centers and the organs and institutions of the number of underground parking rapid expansion, and underground parking grades getting higher and higher, more and more complex facilities, naturally increasing energy consumption. Calculate the lighting energy consumption alone, with a installed underground parking lights 1000, for example, the annual lighting energy consumption that reach as much as 350,000 kwh, according to the statistics, which is “invalid lighting led company consumption accounted for about two-thirds.

In addition, we also should be noted that, with the continued growth near the city size, over-concentration of the central area, the layout of the building is too intensive planning floor space increasing saturation is an indisputable fact. Therefore, the city will not only “long”, but also want to the underground space. Large amounts of data to show that the “underground city” is no longer a little sci-fi nature of the term, but more and more often isolated and now our immediate reality. And underground parking, the “underground city” is undoubtedly huge areas of need 24×7 lighting, its large-scale, complex structure, tend to be relatively small space, is not easy to convert sunlight directly into the ground. Is not difficult to imagine that the underground space and public areas of the building with a similar nature, its lighting energy consumption will be a huge stock of growing astronomical.

Now, to the lighting energy consumption of the underground space “subtraction” of the time. Forced by economic pressure, people have adopted a variety of ways to do this “subtraction”, for example, reduce lighting installed (lighting and acceptance of non-compliance), the number of cut down on lighting (illumination, poor uniformity, increased management costs), manual control lighting time (increase management costs), these are often at the cost in order to reduce the quality of the lighting the exchange energy savings, the transforming effect is often unsatisfactory led company .

How to do a good job in the field of energy conservation, we believe that:

First, it is necessary to promote the concept of “demand lighting energy use. What is the demand lighting? Class place, that is, “architectural lighting design standard GB50034-2004” alleged public areas, foyer, corridors, stairs, washrooms, elevator lobby, warehouse, garage (underground parking ) are typical examples.

The characteristics of these places lighting needs:

Must provide a long time or even 24-hour all-weather artificial light lighting; meet illumination standards requirements, its lighting comfort requirements below the general lighting; activities of a person or vehicle in such places frequency period differences.

Found in these places, most of the people’s behavior patterns through the parade, persistence, and the demands of the fact, is an “on-demand” moderate lighting can be popular for people to light through a large number of investigations and analysis, take a turn to the dark, automatic sleep-demand lighting. ” Without analysis of the actual demand will regulate dogmatic thus formed long light illumination, considerable part of “invalid lighting led company . Based on field-proven, an underground car park, 24 hours lighting design rated power, then there is half to two-thirds of the time, the lamps provided illumination is much higher than the actual demand, excess part is typical of the “invalid lighting.