Sample energy saving data
Exhaust fan (generating variable torque load)
Motor capacity and inverter capacity
| · Motor capacity | : | 22(kW) |
| · Inverter model | : | FRN22F1S-2 (FRENIC-Eco) |
| · DC REACTOR | : | DCR2-22A |
Power reduction rate and energy saving effect amount
| Item | Operation using commercial power | Inverter-controlled operation | ||
|---|---|---|---|---|
| Operation frequency (Hz) | 50 | 45 | 40 | 35 |
| Average power use (kW) | 17.2 | 13.1 | 9.10 | 6.23 |
| Power reduction rate (%) | - |  30.7 |
47.1 |
63.8 |
| Annual power charge (yen) | 1,574,006 | 1,198,807 | 832,759 | 570,120 |
| Annual amount (yen) of energy saving effect | - | 375,199 | 741,247 | 1,003,886 |
| Annual CO2 reduction volume (kg/year) | - | 3,660 | 7,232 | 9,794 |
Operating conditions
| · Annual operating days | : | 310 (days/year) |
| · Working hours per day | : | 24 (hrs/day) |
| · Power charge unit price | : | 12.3 (yen/kWh) |
Cooling tower (generating variable torque load)
Motor capacity and inverter capacity
| · Motor capacity | : | 5.5 (kW) |
| · Inverter model | : | FRN5.5F1S-2 (FRENIC-Eco) |
| · DC REACTOR | : | DCR2-5.5 |
Power reduction rate and energy saving effect amount
| Item | Operation using commercial power | Inverter-controlled operation | ||
|---|---|---|---|---|
| Operation frequency (Hz) | 60 | 45 | 40 | 35 |
| Average power use (kW) | 5.18 | 2.31 | 1.63 | 1.10 |
| Power reduction rate (%) | - | 55.4 |
68.5 |
78.8 |
| Annual power charge (yen) | 410,256 | 182,952 | 129,096 | 87,120 |
| Annual amount (yen) of energy savings effect | - | 227,304 | 281,160 | 323,136 |
| Annual CO2 reduction volume (kg/year) | - | 2,066 | 2,556 | 2,938 |
Operating conditions
| · Annual operating days | : | 300 (days/year) |
| · Working hours per day | : | 20 (hrs/day) |
| · Power charge unit price | : | 13.2 (yen/kWh) |
Mist collector (generating variable torque load)
Motor capacity and inverter capacity
| · Motor capacity | : | 3.7 (kW) |
| · Inverter model | : | FRN3.7F1S-2 (FRENIC-Eco) |
| · DC REACTOR | : | DCR2-3.7 |
Power reduction rate and energy saving effect amount
| Item | Operation using commercial power | Inverter-controlled operation | ||
|---|---|---|---|---|
| Operation frequency (Hz) | 60 | 45 | 40 | 35 |
| Average power use (kW) | 3.27 | 1.44 | 0.99 | 0.69 |
| Power reduction rate (%) | - | 56.0 |
69.7 |
78.9 |
| Annual power charge (yen) | 260,161 | 114,566 | 78,764 | 54,896 |
| Annual amount (yen) of energy savings effect | - | 145,595 | 181,397 | 205,265 |
| Annual CO2 reduction volume (kg/year) | - | 1,142 | 1,423 | 1,610 |
Operating conditions
| · Annual operating days | : | 260 (days/year) |
| · Working hours per day | : | 20 (hrs/day) |
| · Power charge unit price | : | 15.3 (yen/kWh) |
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