16 April 2010


Lumileds-based China tunnel lighting yields 60% energy savings

LED-based lighting using LUXEON Rebel LEDs from Philips Lumileds of San Jose, CA, USA in two new highway tunnels in central China is saving up to 60% in energy consumption and related costs over fixtures built with traditional light sources, according to Lumileds’ distribution partner Future Lighting Solutions. Future Lighting supplied engineering assistance and LED inventory management to Xi’an Liming Electronic Technology Co Ltd, which developed the 3900 fixtures involved in the project.

Xi’an Liming, which is one of China’s largest suppliers of outdoor LED lighting as well as manufacturing LED tunnel lighting, worked with the engineering team at Future Lighting Solutions to ensure that the fixtures would meet national tunnel lighting standards as well as have a sustainable LED supply. Future’s services included LED part and color bin selection, optical simulations, lens testing, advanced CCT binning to provide the desired 5000K color temperature, and bonded inventory for LED availability.

“Future’s help in designing and optimizing these tunnel fixtures was instrumental in our ability to both meet and exceed the national standards for this kind of lamp, and thereby win the lighting contract for these two tunnels,” says Xi’an Liming general manager Yijing Mu. “More tunnel construction projects are on the drawing board, and we are now well-positioned to bid on those additional projects.”

The fixtures are providing illumination for the Xinkailing and Wangzhuyuan No. 2 tunnels of the Liu’an-to-Wuhan highway, a north-south extension of the Shanghai-to-Wuwei mainline ( one of the country’s key east-west arteries). Running the entire 4.7km (2.9 mile) combined length of the two tunnels, the lighting was a joint project of Xi’an Liming and the Anhui Province Huanyu Highway Construction Development Co Ltd.

Each 50W and 100W tunnel lamp contains 42 and 72 LUXEON Rebel LEDs, respectively. In addition to energy savings, advantages over conventional light sources such as fluorescent, metal halide and low- and high-pressure sodium include a 60,000-hour+ life and the ability to withstand the shock and vibration of the tunnel environment (reducing replacement, servicing and labor costs as well as lane closures).

Future Lighting Solutions says that other benefits of using LEDs include better color rendering for improved driving visibility and safety, less yellowing of the lamp fixture from baked-on dust and pollution because of the LEDs’ low heat production, and ‘green’ features such as ROHS compliance and mercury- and lead-free construction.

“This installation highlights the environmental and maintenance benefits of using LUXEON LEDs for tunnel lighting, as well as LEDs’ ability to deliver the brightness and uniform roadway illumination required,” says Winter Chan, VP of sales Greater China for Future Lighting Solutions. 

See related item:

Philips and Future Lighting extend LED distribution deal to light engines

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