|
Saved electric power |
|
1.8 kW × 10 machines = 18 kW |
|
Electricity cost |
|
Utility rate: 15 yen/kWh |
|
Yearly operating hours: |
|
6,000 hours |
|
Air-conditioner performance coefficient COP = 3 |
|
3,000 hours operated yearly |
|
1. aving of heat consumption power (running costs)
18 kW × 6,000h × 15 yen/kWh = 1,620,000 yen
2. Reduction of air-conditioner electric power resulting from reduced heat release
18 kW ÷ 3 × 3000h × 15 yen/kWh = 270,000 yen
3. Electric energy saved in one year |