High Volume 27111CBM/H Backward Material Handling Blower Fan Single Suction

This article's table of contents introduction:

1. Decoding Your Specification
2. Likely Type of Fan: Centrifugal Fan with BI (Backward Inclined) Wheel
3. What You Need to Know to Buy/Select This Fan
4. Example of a Match (Hypothetical)
5. Final Verdict: Is this the right fan?

Based on the keywords you've provided, it sounds like you are looking for a High-Volume, Heavy-Duty Industrial Centrifugal Fan designed for material handling (pneumatic conveying) with a backward-inclined (or backward-curved) blade design.

Here is a breakdown of what the specifications mean and what type of fan you are likely describing.

Decoding Your Specification

• 27111 CBM/H (Cubic Meters per Hour): This is a Very High Volume flow rate.

  • Converted: 27111 m³/h → 85 m³/min → ~15,955 CFM (Cubic Feet per Minute).
  • Application: This volume is typical for moving bulk materials like grain, wood chips, dust, or pellets.

• Backward Material Handling Blower Fan:

  • Material Handling: Implies the fan is designed to transport solid particles (dust, sawdust, granules) suspended in air. It usually has a thicker housing (abrasion-resistant) and an open impeller design.
  • Backward (Backward-Inclined or Backward-Curved):
    • Advantage: Extremely efficient. The blades are curved away from the direction of rotation.
    • Non-Clogging: Backward curved blades are better for air with some dust than forward curved, though they are not as tolerant of sticky materials as Radial or Paddle wheel designs.
    • Overload Protection: The motor will not overload if the system pressure drops (unlike forward-curved fans).

• Single Suction:

  • Air enters the impeller from only one side.
  • Opposite: Double Suction (air enters from both sides). Single suction is standard for lower-to-medium pressure applications.

Likely Type of Fan: Centrifugal Fan with BI (Backward Inclined) Wheel

If you need to move 27,111 m³/h through ductwork (conveying material), the most common type is a Centrifugal Fan.

Comparison of Wheel Types for Material Handling:

Conclusion: Your specification points to a Backward Inclined Centrifugal Fan for moderate material handling.

What You Need to Know to Buy/Select This Fan

To get a quote or finalize selection, you must provide the following 3 critical parameters:

1. Static Pressure (SP) or Total Pressure (TP):

   • Your spec: 27111 m³/h @ ??? Pa (Pascals) or mmWC (mm of Water Column)
   • Example: "27,111 CBM/H @ 2000 Pa (200 mmWC)".
   • This determines the Motor Power (kW) . For your volume:
     • Low Pressure (500 Pa) → ~5-7 kW
     • Medium Pressure (2000 Pa) → ~22-30 kW
     • High Pressure (5000 Pa) → ~55-75 kW

2. Material Type:

   • What are you moving? (e.g., Sawdust, Wood Chips, Pellets, Plastic granules, Paper dust).
   • Sticky or fibrous? If yes, you need Radial blades, not Backward.
   • Abrasive? If yes, you need Wear Liners (hardox steel or ceramic lining).

3. Temperature:

   • Is the material hot? (e.g., 80°C, 150°C, 300°C).
   • Standard fans are for ambient (20-40°C). Higher temps require special bearings, shaft seals, and thermal expansion clearance.

Example of a Match (Hypothetical)

Given your spec of 27,111 m³/h, a typical "High Volume" fan might be:

• Type: Centrifugal, Single Inlet, Backward Inclined.
• Size: Impeller diameter of ~900 mm to 1000 mm (depending on pressure).
• Flow: 27,111 m³/h.
• Pressure: ~2500 Pa (250 mmWC) - Medium range.
• Power: 30 kW Motor.
• Speed: 1450 RPM (4-pole motor on 50Hz) or ~1200 RPM.
• Inlet: Open (single suction) with an inlet cone.

Final Verdict: Is this the right fan?

• YES, if: You are moving light, non-sticky material (dust, dry grain, sawdust) at a moderate pressure drop (long ductwork).
• NO, if: You are moving heavy, wet, or sticky material (concrete, wet wood chips, scrap metal). You would need a Radial Paddle Wheel fan, which is less efficient but stronger.

Next Step: Contact a fan manufacturer (like Greenheck, New York Blower, Howden, Chicago Blower, or a local Indian/Chinese manufacturer like Aerovent, Reitz India, or Sree Engineering) and give them:

1. Volume: 27,111 m³/h
2. Static Pressure: (Your required pressure in Pa or mmWC)
3. Material: (The medium you are conveying)
4. Temperature: (Ambient or Hot)

Without the pressure, a fan cannot be properly selected.