1. Tunnel Lighting Application Electrodeless Induction Lamps LeuchTek GmbH www.LeuchTek.de Wendenstrasse 279, D-20537 Hamburg V0.1

2. LeuchTek GmbH www.LeuchTek.de Electrodeless Induction Lamp Ultra-long Lifetime, 60000-100000hours, 5 years guarantee Energy-saving (70-90lm/w) and less maintenance cost CRI>80, objects can be seen clearly, less traffice accidents Instant Ignition & Restrike, suitable for emergency lighting Environment Protection

3. LeuchTek GmbH www.LeuchTek.de Products for Tunnel Application - Power: 80W-200W - Aluminium case, IP65, - size: 700x333x193 - Ballast is inside the main case - Power: 200W-400W - Aluminum case, IP66 - size: 1220 x 370 x 310 - Ballast is out of the main case Additional: - Emergency lighting is possible, DC24V running for two hours with 50% lamp watt dimming during power off. - Intelligent control system(dimming and switch on/off) based on Dali-bus is possible IT-1 seriesIT-2 series

4. LeuchTek GmbH www.LeuchTek.de Application Study

5. LeuchTek GmbH www.LeuchTek.de Higher Lumen, then higher lux?? The measured result of a normal Lux-meter is photopic lumen, which is not really corresponding the sensitivity of humen eyes. More scientifically, scotopic lumen- pupil lumen (Plm) should be measured for comparasion. HPS Lamp is 90Plm/W, induction lamp is 140Plm/W 555nm Normal lamp is point-light or line-light source, efficiency is more reliable from a reflector. Induction lamp is surface-lighting source, which has much bigger luminous surface and better uniformity. Not definitly! Induction lamp has 70-90lm/w which is not the higest, however:

6. LeuchTek GmbH www.LeuchTek.de ItemsInduction LampMetal Halide Consumption Power 150W total 160W 250W Total 280W Lamp quantity154 sets Installation height m 77 Distance between m 44 Eave Lux 360388 U1 Emin/Eave 0.940.82 measured area m 2 12 Total area m 2 2304 Power per m 2 W/m 2 160×154/2304 10.69280×154/2304 18.72 Single lamp lumen lm 1200020500 Total lumen lm 12000×154 184800020500×154 3157000 Measured lumen lm 360×2304 829440388×2304 893952 Utilized Index UI 829440/1848000 44.9% 893952/3157000 28.3% 150W Induction lamp VS. 250W MH

7. LeuchTek GmbH www.LeuchTek.de Cost comparasion in 60000 hours Item150W induction lamp (Total 160W) 250 HPS lamp ( Total 280W) Power consumption (0,12EUR/KW) 0,16 x 60000 x 0,12EUR = 1152,-EUR 0,28 x 60000 x 0,12EUR = 2016,-EUR Bulb cost0 EUR6 x 28,-EUR = 168,-EUR Bulb change labor cost 0 EUR6 x 20,-EUR = 120,- EUR Cost to partly block the tunnel for maintenance 0 EUR?? Total Cost1152,-EUR> 2340,-EUR Saved cost per lamp > >1188,-EUR > >1188,-EUR

8. LeuchTek GmbH www.LeuchTek.de Highway Tunnel, emergency lighting Normal power: 100W Emergency with battery: 35W Lamp Distance: 35m Height: 5.3m Average lux 46LX 100W HPS 100W Induction Emergency lighting Reference Project 1

9. LeuchTek GmbH www.LeuchTek.de Highway tunnel in Yunnang Entrance 1354LX Transition 1 381LX Transition 2 267LX Main 58LX Exit 252LX Reference Project 2

10. LeuchTek GmbH www.LeuchTek.de Reference Project 3 Tunnel in Korea Before Installation: 250W HPS Sodium Lamp Dark Old Bad CRI After Installation: 120W Induction Lamp Illuminance:403 lux Induction Lamp Bright Modern Good CRI

11. LeuchTek GmbH www.LeuchTek.de Reference Project 4 Infrastructure Applications– Tunnel #2 in Kunan Expressway in China 300W 504 units, 150W 440 units

12. LeuchTek GmbH www.LeuchTek.de Reference Project 5 Infrastructure Applications-- Underground Walkway in Korea

13. LeuchTek GmbH www.LeuchTek.de Thank You