Energy saving estimation
1. Annual power consumption of AC-FFU before renovation
Single power consumption: 350W
Total power consumption: 2000 units x 0.35 kW/unit=700 kW
Annual power consumption: 700 kW x 24 hours/day x 365 days/year=6132000 kWh of electricity
2. Annual power consumption of EC-FFU after renovation:
Assumption: Through intelligent group control, FFU operates at an average speed of 75%.
According to the law of cubes, power consumption ≈ (75%) ³=0.75 × 0.75 × 0.75 ≈ 42% full speed power consumption.
Single EC-FFU full speed power consumption: 300W (more efficient motor, full speed power may also be lower)
Average power consumption per unit: 0.3 kW × 42%=0.126 kW
Total average power consumption: 2000 units x 0.126 kW/unit=252 kW
Annual electricity consumption: 252 kW × 24 × 365=2207520 kWh
3. Annual energy savings and revenue:
Annual energy savings: 6132000-2207520=3924480 kWh
Electricity revenue: Calculated based on an industrial electricity fee of 0.8 yuan/kWh, the annual saved electricity fee is 3924480 × 0.8 ≈ 3.14 million RMB
Conclusion: Through the application of the above technologies, this project can save over 3 million yuan annually on electricity bills alone. The return on investment (ROI) of a project can usually be controlled within 1-3 years. What will be saved afterwards will be pure profit.
Summary: The energy-saving application case of DC FFU eloquently proves its value. It is not just a simple equipment replacement, but a systematic upgrade from "extensive energy consumption" to "refined energy conservation". Its energy-saving effect comes from:
- High efficiency motor (foundation).
- Intelligent stepless speed regulation (core).
- High power factor and soft start (auxiliary).
4. Reduce air conditioning load (derived).
For any large-scale, high-energy clean room project, replacing the AC FFU with an intelligent group controlled DC FFU system is currently one of the most effective and highest return on investment energy-saving measures verified.
For any large-scale, high-energy clean room project, replacing the AC FFU with an intelligent group controlled DC FFU system is currently one of the most effective and highest return on investment energy-saving measures verified.