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Energy Saving Analysis
On/Off System
On/Off System Energy Saving Plan
- Apply schedule-based control considering commuting and lunch hours. Control lighting throughout the entire area at 50% and 25% during start-of-work and lunch periods.
- Window-side control targets 10W DOWN LIGHTs in the perimeter area. When the illuminance sensor installed near the windows detects 500 LUX, the window-side lighting is controlled at 50%. When the illuminance does not reach 550 LUX, the remaining window-side lighting is controlled at 0%.
- Install occupancy sensors and window-side illuminance sensors in patient rooms, meeting rooms, lounges, and similar areas. Window-side lighting is controlled in the same manner as office areas, while the remaining areas are controlled at 0% when vacancy is detected by the occupancy sensor.
0-10V Dimming System
0-10V Dimming System Energy Saving Plan
- Apply schedule-based control considering commuting and lunch hours. Control lighting throughout the entire area at 50% and 25% during start-of-work and lunch periods using dimming control.
- Window-side control targets 10W DOWN LIGHTs in the perimeter area. When the illuminance sensor installed near the windows detects 500 LUX, control the window-side LED lighting by dimming from 70% to 30%. When 550 LUX is detected, control the remaining window-side lighting at 0% dimming.
- Install occupancy sensors and window-side illuminance sensors in executive offices, meeting rooms, lounges, and similar areas. Window-side lighting is controlled in the same manner as office areas, while the remaining areas use step-by-step dimming control (70%, 30%, 0%) when vacancy is detected by the occupancy sensor.
DALI + Dimming System
DALI + Dimming System Energy Saving Plan
- Apply schedule-based control considering commuting and lunch hours. Control lighting throughout the entire area at 50% and 25% during start-of-work and lunch periods using dimming control.
- Window-side control targets 10W DOWN LIGHTs in the perimeter area. When the illuminance sensor installed near the windows detects 500 LUX, control the window-side LED lighting by dimming from 70% to 30%. When 550 LUX is detected, control the remaining window-side lighting at 0% dimming. In addition, the first row of 25W LEDs near the office windows is also controlled by setting the dimming level from 70% to 30%.
- Install occupancy sensors and window-side illuminance sensors in executive offices, meeting rooms, lounges, and similar areas. Window-side lighting is controlled in the same manner as office areas, while the remaining areas use step-by-step dimming control (70%, 30%, 0%) when vacancy is detected by the occupancy sensor.
- Scene control for executive offices and meeting rooms: PT Mode (50% Dimming), Meeting Mode (80% Dimming), and Energy-Saving Mode (30% Dimming).
- Install occupancy sensors for individual LED luminaires in office areas and apply step-by-step dimming control when occupants are absent (70% after 30 minutes of vacancy, 30% after 60 minutes, and 0% after 120 minutes).
Energy Saving Analysis Table
| Category | ON/OFF System | Dimming System | DALI + Dimming System | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Application Area |
Luminaire Power (W) |
Quantity (EA) |
Daily Operating Hours |
Operating Days/Year |
Annual Energy Consumption (kWh) |
Saving Rate |
Annual Energy Consumption After Savings (kWh) |
Saving Rate |
Annual Energy Consumption After Savings (kWh) |
Saving Rate |
| Office | 25 | 660 | 10 | 260 | 42,900 | 10% | 38,610 | 10% | 23,595 | 45% |
| Other Rooms | 25 | 40 | 10 | 260 | 2,600 | 30% | 1,820 | 35% | 1,690 | 40% |
| Window-Side Area | 10 | 120 | 10 | 260 | 3,120 | 30% | 2,184 | 35% | 2,028 | 35% |
| Restrooms & Other Rooms | 10 | 60 | 10 | 260 | 1,560 | 5% | 1,482 | 5% | 1,482 | 5% |
| Total | 880 | 50,180 | 43,810 | 28,665 | ||||||
| Annual Electricity Cost (Based on KRW 145/kWh) | 7,276,100 | 6,352,450 | 4,156,425 | |||||||
| Annual Cost Savings | 923,650 | 3,119,675 | ||||||||
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- Working hours are assumed to be 10 hours per day, consisting of 8 hours of focused work time and 2 hours of extended working hours.
- Since the On/Off system does not support individual luminaire control, the circuits are divided into ZONES. The Dimming system is also designed to use ZONE-based circuit separation for dimming control rather than individual luminaire control.
- For the DALI Dimming control system, individual lighting control is applied to offices, meeting rooms, and executive offices, while the window-side lighting is configured as ZONE-based circuits for dimming control.
- Please refer to the energy-saving graphs on the following page for each applied system.
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12,000
9,000
6,000
3,000
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Annual Energy Consumption (kWh)
No System
ON/OFF Sys.
Dimming Sys.
DALI + Dimming Sys.
