The Primary Function of Centrifugal Fans

Whether you need a small centrifugal fan or something a bit larger, this product serves a primary function. While centrifugal fans come in various sizes and types, they all increase both the volume and speed of an airstream. These functions get accomplished thanks to rotating impellers. To ensure optimal performance, especially in harsh industrial environments, it is critical that you purchase the best-quality product available.

Types of Centrifugal Fans

Following are some of the most commonly used types of centrifugal fans on the market, coupled with a few examples of benefits.

Radial Blade – You would use this centrifugal fan to move a lower volume of higher pressure air or gas.

  • 70 percent static efficiency
  • Excellent material handling capabilities
  • Lower operating RPMs

Radial Tips – This is yet another option, perfect for medium volume air stream at higher pressure. The only real drawback is the higher level of noise.

  • 78 percent static efficiency
  • Moderate material handling capabilities
  • Overloading type horsepower curve
  • Reduced operating RPMs

Backward Curved – For a higher volume of clean air, this fan is ideal.

  • 84 percent static efficiency
  • Lowest noise possible
  • Non-overloading horsepower curve

Backward Inclined – This centrifugal fan is for a higher volume of air or gas but at lower pressure.

  • 80 percent static efficiency
  • High durability rate
  • Light material capabilities (with frequent cleaning)
  • Reduced noise level
  • Non-overloading horsepower curve

Airfoil – Among the different types of centrifugal fans, the airfoil is for a higher volume of the air stream at a lower pressure.

  • 84 percent static efficiency
  • Lowest noise level
  • Non-overloading horsepower curve

Forward Curve – This fan is for the highest volume of the air stream at lower pressure.

  • Low level of noise
  • 65 percent static efficiency
  • Overloading type horsepower curve

Along with air, centrifugal fans move gases. Without getting overly technical, by increasing the volume of the air stream, the impellers move against resistance caused by dampers, ducts, and various other components. These fans displace air radically, which means they change air flow direction – usually by 90 degrees. For industrial purposes, a centrifugal type of fan is not only reliable, sturdy, and quiet, but also capable of performing in a broad range of conditions.

As a constant displacement device, a centrifugal fan provides constant airspeed while moving a relatively constant amount of air as opposed to a constant mass. In other words, this fan has fixed air velocity. Of all fans used for industrial purposes, the centrifugal type fan ranks at the top of the list.

For today’s advanced HVAC systems, businesses depend on various centrifugal fans. As for construction, these fans tend to be more cost-effective compared to axial fans. Along with transporting air, gas, and other materials as part of the ventilation system in buildings, they also work well for controlling indoor air pollution. With a drum-shaped design coupled with several fan blades, many people refer to this kind of fan as a “hamster wheel.”

Top Quality Products

To find superior quality fans and blowers, our team of experts at NISCO can help. You can see our full line of high-quality products online or call to speak with a company representative for more information.

Thank you for your interest in NISCO products. To request a quote or ask a question,
Please send us a message!

Ask a Question Request a Quote

This entry was posted in Blog and tagged . Bookmark the permalink.