The Electric Auto-Variable (EAV) fan, while using Cofimco standard FRP or Aluminum blades, has the peculiar feature to adjust the blades pitch angle to optimize the power consumption.
The pitch adjustment is carried out automatically and continuously while the fan is running. Therefore, a relevant energy saving can be achieved without stopping the fan and without hampering the cooling process.The pitch can be set both in open or closed loop, to meet the cooling requirements at different air temperatures or process capacities. A continuous, very accurate blade pitch feedback is also provided, allowing an extremely accurate knowledge of the blade position.
EAV Advantages:Compared to a Variable Speed Drive (VSD* - common flow regulation system), the Electric Auto-Variable fan (EAV) fan offers several benefits:
- No Need for a Dedicated Switchgear Room
- Simplified Motor Monitoring and Cabling
- Lower Maintenance Costs
- No Special Electric Motors or Cables Required
- Proven Pitch Control System
- Quick and Easy Installation (New Equipment)
- Flexible Retrofit for Existing or Older Plants
