We(YuFeng lighting) always commit to introduce the green lighting design in the lighting of ordinary industrial plants (mainly light industrial factories).
We think that if the electricity consumption of lighting can be effectively reduced, it can not only reduce production costs, but also contribute to environmental protection, and can also improve the productivity of enterprises.
The green lighting connotation includes four indicators of high efficiency, energy saving, environmental protection, safety and comfort. LED light source meets the requirements of green lighting and has been widely used in various fields in recent years.
From the perspective of led lighting manufacture in China we will combine the lighting characteristics of industrial plants to discuss how to use LED light sources for industrial plant lighting with this article.
2 Industrial plant lighting requirements
Industrial plant lighting generally includes general lighting, area lighting, local lighting, special workplaces lighting, emergency lighting, etc.
Traditionally, industrial plants are mostly single-storey buildings with higher floor heights. The height of the floors is usually above 6m. Due to the production requirements, the light source generally selects high-pressure gas discharge lamps, such as metal halide lamps.
When the hanging height of the lamp is 6m~10m, 250W~400W high-pressure gas discharge lamp can be used, and 250W~1000W can be used for 10m or more.
The type of lamp is selected as a deep recessed type. The height of the multi-storey building is usually about 4m, and the light source can be used with straight fluorescent lamps.
The main contents of industrial plant lighting design are as follows:
(1) Base on the relevant standard of GB 50034-2013 “Standard for lighting design of buildings “, Consider with the size of the plant, the fire hazard category of the production, etc., we can determine the illumination, lighting source, lamp type, lamp arrangement and installation method in different areas of the plant.
(2) According to the workshop, section or production line function, the lighting partition is divided.
The lighting distribution box is set reasonably, the power supply mode is determined, the lighting main line is laid, the lighting distribution system is determined. And the lighting distribution box (control box) is set to be easy to work for personnel operations.
3 LED application analysis in industrial plant lighting design
3.1 Comparison of lighting solution for industrial plants.
Now the common lighting sources in industrial plants are fluorescent lamps and metal halide lamps.
We compare and analyze LED lights with fluorescent lamps and metal halide lamps, please check Table 1 and Table 2 below.
Table 1 Comparison of three primary color fluorescent lamps and LED lights
Table 2 Comparison of metal halide lamps and LED lamps
From above comparison, the use of LED lights as illumination sources is very advantageous in all aspects, and is an inevitable choice for industrial plant lighting design in the future.
3.2 Industrial plant LED lighting project case analysis
In the lighting design project of an electronic product manufacturer, the original lighting design mainly uses:
36W long fluorescent tube lamp,
18W short fluorescent tube lamp,
250W traditional high bay lamp
LED lighting products are now used to replace traditional lighting products to achieve energy savings, longer service life, and improve lighting quality (see Table 3).
Table 3 Lamp replacement detail
3.2.1 LED lighting design for factory underground garage
The parameters of the factory underground garage are as follows:
Space height: 3.900m,
Installation height: 3.900m
Maintenance factor: 0.90
Working surface height 0.750m
The calculated illuminance is shown in Table 4.
Table 4 illuminance calculated value
Replace 1×36W traditional fluorescent lamps with 141 sets of 1×18W single-tube control lamps.
The average ground illumination is 59lx and the design illumination is 50lx. LED underground replacement drawing and real scene of factory underground garage
Table 5 Illuminance calculation
Replace 3×14W traditional fluorescent lamps with 32 sets of 3×9W short tube grille lamps. The average illumination of the working surface is 403lx and the design illumination is 300lx.
The LED replacement drawing map are shown in Picture 3
3.2.3 Project Analysis
(1) Project running.
After replacing the LED lamps, the project runs well. Although the initial investment is higher, the annual energy savings are more than the original, and maintenance costs are less. Moreover, the illumination has been improved, the overall project is more beautiful than before.
The life of the LED light source is about 40,000 hours, which is about 4 times that of a fluorescent lamp. The LED light source does not contain mercury, and it will not pollute the environment during manufacturing, assembly, and recycling.
Project investment payback period (see Table 6).It is estimated that the LED replacement program can recover the investment cost after the first year, and the accumulated savings of 91,000 US Dollars in five years.
Table 6 Investment recovery period (Unit: 10,000 USD)
This project replaces the original fluorescent lamp with LED lighting products without changing the original used lamp type and lighting distribution. The design solution meets the original illumination requirements, the illumination is slightly improved, and the initial investment can be recovered within 1 to 2 years.
The application of LED lighting in industrial plant lighting has good prospects, and its large-scale popularization is inevitable.
Base on the perspective of lighting effects, investment returns and energy saving, we should all choose LED lighting.
Therefore, we should strongly commit to actively apply LEDs to industrial plant lighting, gather both design and practical experience, and build the foundation for the large-scale application of LED in the future.