This article's table of contents introduction:
- Key Specifications (Typical "F Series" Double Suction)
- Applications for this Size Range
- Common "F Series" Models matching this range
- Critical Questions to Verify the Fan
- Where to Find the Exact Data
- Summary for your Selection
Based on your query, it appears you are looking for technical specifications or confirmation regarding an Energy Saving Double Suction Centrifugal Fan from an F Series (likely a Chinese-named series, such as the 9-26, G4-73, or an energy-efficient equivalent like the Flow-saving or Fan series from manufacturers like Zibo or Yifan).
The range of 2,000 to 900,000 m³/h covers a massive spectrum from small industrial ventilation to large power plant or mine ventilation.
Here is a breakdown of what this specification typically implies, common parameters, and where this fan is used.
Key Specifications (Typical "F Series" Double Suction)
Because you haven't specified a full model number (e.g., F-2000, F-260, or a specific blade angle), here are the standard characteristics of a fan that fits this description:
- Flow Rate (Q): 2,000 – 900,000 m³/h
- Pressure (P): Typically ranges from 300 Pa to 6,000 Pa (Depending on the specific model within the F-series; large double suction fans usually operate in the low-to-medium pressure range).
- Power: Varies from 75 kW (small 2,000 m³/h fans) up to 1,200 kW+ (large 900,000 m³/h fans) .
- Impeller Type: Double Suction (Air enters from both sides of the impeller, allowing for higher flow rates with lower inlet velocity, thus saving energy).
- Direction: Usually clockwise (from drive side) or counter-clockwise, with adjustable outlet positions (0°, 45°, 90°, 135°, 180°, 225°).
- Energy Saving Features:
- High-efficiency blade design (often backward-curved or airfoil blades).
- Low energy consumption (typically over 80-85% efficiency, with high-end F-series reaching 88-92% static efficiency).
- Low noise (due to optimized airflow paths).
- Variable speed ready (can be fitted with a VFD for precise air volume control).
Applications for this Size Range
Because your flow rate goes up to 900,000 m³/h, this is an industrial powerhouse.
| Flow Rate Range | Typical Application |
|---|---|
| 2,000 – 30,000 m³/h | Boiler ventilation, small dust removal, drying systems, HVAC. |
| 30,000 – 200,000 m³/h | Medium boilers (10-75 t/h), cement plants, steel mills, chemical ventilation. |
| 200,000 – 900,000 m³/h | Large power plants (200-300MW+) , main mine ventilation, large tunnel ventilation, cement kiln exhaust. |
Common "F Series" Models matching this range
If you are looking for a specific replacement or selection manual, these are the likely industry-standard equivalents:
- G4-73 Series: Classic high-efficiency double-suction fan (Range: 20,000 – 680,000 m³/h).
- Y4-73 Series: For dusty or hot gases (Range: similar to G4-73).
- F6-2×30 Series: (2-stage double suction, very high pressure).
- F Series (Custom/Factory designation): Many Chinese manufacturers (e.g., Zibo Hengding, Shanghai SFF, Yifan) have an "F" line dedicated to forged/steel plate construction for high-temperature or heavy-duty applications.
Critical Questions to Verify the Fan
To ensure this fan matches your exact need, you need to confirm these three things:
- Total Pressure (Pa): Is this for low-pressure ventilation (e.g., air conditioning) or high-pressure boiler draft (e.g., 4000+ Pa)? A 900,000 m³/h fan moving 500 Pa is very different from one moving 5,000 Pa.
- Media Temperature: Is this for clean air (G4-73), hot gas up to 250°C (Y4-73, F-series), or dusty air? The material (Q235 steel vs. 16MnR vs. Stainless Steel) changes drastically.
- Drive Method: Is it D-connection (direct drive via coupling) or C-connection (belt drive)? For large flow fans, D-drive is standard for heavy duty; C-drive is used for speed flexibility.
Where to Find the Exact Data
Since you listed a very generic "F Series," the best next step is to get the full model number or contact the manufacturer.
Example full model number:
F 260-1 1250 D / 45°
- F: Series designation (or frame size)
- 260: Impeller diameter (in dm, so 260 dm = 2600 mm impeller! Very large.)
- 1: Impeller blade count or version
- 1250: Motor speed (RPM)
- D: Drive type (Direct/Coupling)
- 45°: Outlet angle
Summary for your Selection
- If you are buying: Look for a fan that meets or exceeds GB 19761-2020 (China energy efficiency standard). Ask for the static efficiency curve.
- If you are replacing: Measure the existing impeller diameter, motor power, and rotation speed. A double-suction fan of 900,000 m³/h will have an impeller diameter of 0m to 3.0m and require a motor of 800kW to 1,500kW.
- Energy Saving Promise: Double suction fans in this range (F Series) generally save 15-20% power compared to older forward-curved (9-19, 9-26) single-suction fans for the same flow.
Do you have a specific pressure requirement (in Pa) or a specific manufacturer code (e.g., F-260 from Yifan)? Provide that, and I can give you the exact motor power and voltage needed.
