| 요약2 |
We conducted a LED lighting system dimming control experiment by dividing a full-scale mock-up into two zones, a perimeter zone and an interior zone (2019.06-08). First, we replaced the fluorescent lamp of the existing lighting system with a high efficiency LED lighting system, and calculated the indoor daylight illuminance, LED artificial light distribution, and dimming rate (turning-on rate) for each control method. Second, we performed an LCC analysis according to the LED lighting system installation and control method. We selected the experimental case in accordance with the actual usage pattern. Case 1 was selected for full auto dimming control. Case 2 was selected for manual dimming control five times a day. Case 3 was selected for a switch on-off control that turned off between 12:00-17:00. For work plane illuminance of 500 lx during auto dimming control, the dimming rate was 70% (zone A_82%, zone B_58%) on average in clear sky, 60% (zone A_69%, zone B_51%) on average in intermediate sky, 51% (zone A_57%, zone B_44%) on average in overcast sky. The difference in dimming rates of auto dimming control (Case 1) and manual dimming control (Case 2) were 3% or less, and the value difference was small. By replacing the fluorescent lamp with a high efficiency LED lighting system and analyzing LCC for the control method, the break-even point of the LED auto dimming control was 11.5 years and the break-even point for manual dimming control was 7.6 years. Therefore, it is considered that the dimming control method is economically feasible. |