CASE A: KIMHAE UNDERPASS

Case Studies

TUNNEL / CARPARKS / UNDERPASS

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CASE A: KIMPO TUNNEL

Energy Consumption

Before: 250W (SODIUM LAMP)

After: 120W (INDUCTION)


Energy Reduction

    = (120-250) / 250 W

    = -55% savings

SODIUM LAMP

250W

INDUCTION LAMP

120W

Summary

The previous tunnel lighting was using 250W High Pressure Sodium. The change propose was to reduce energy consumption and change to 120W induction lighting. 


From the brightness reading above, we were successful to improve the brightness level by up to 190% from the previous lighting with Sodium lamps even with 55% savings achieved. Overall uniformity of brightness and lighting experience has also improve significantly.

Brightness

Before: 138 lux

After: 263 lux


Brightness Improvement

= 263 - 138 / 138 lux

= +190% improvement

Energy Consumption

Before:400W (SODIUM LAMP)

After:200W (INDUCTION)


Energy Saved (as per kWh meter reading):

    = -50% savings

SODIUM LAMP

400W

INDUCTION LAMP

200W

Summary

The previous tunnel lighting was using 400W High Pressure Sodium. The change propose was to reduce energy consumption and change to 200W induction lighting. 


From the brightness reading above, we were successful to improve the brightness level by up to 266% from the previous lighting with Sodium lamps even with 50% savings achieved. Overall uniformity of brightness and lighting experience has also improve significantly.

Brightness

Before: 110 lux

After: 403 lux


Brightness Improvement

= 403 - 110 / 110 lux

= +266% improvement

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