NIMUS Fans Improve Efficiency and Cost Reduction at UK Biomass Gas Site

The NIMUS range of highly efficient, medium pressure, backward curved, single inlet fans form an integral part of the Storm range produced by Axair’s supply partner, Casals Ventilation. The Casals Storm range offers an extremely comprehensive range of industrial fans, which also includes material handling fans and high pressure fans with both backward curved and radial blades. The NIMUS and NIMAX range are available with 11 impeller sizes, from diameter 310mm to 1400mm and with motor powers from 0.37kW to 110kW, with airflow to 88,000m3/h and pressures to 3350Pa. The Nimax centrifugal impeller and casing is larger than a Nimus, which increases the performance of the unit. The range, as standard, incorporates a reinforced housing protected against corrosion by powder coated resin with air handling temperatures to 130°C. Typical applications include food industry processing, boiler/heating, paint booths plus many other applications and installations. The range is ideally suited to large spaces such as factories or warehouse and is situated at the inlet our outlet of ductwork to provide maximum ventilation. The range options available on request include ATEX Zone 1 and ATEX Zone 2 (read our guide to ATEX fans here), the fans can also be produced in special finishes such as marine specification, hot dip galvanised or stainless steel in SS304 or SS316. High temperature options are also available with the inclusion of an additional cooling impeller to handle maximum temperatures of 250°C.  


Nimas / Nimax Features:

  • Medium pressure centrifugal fan with direct coupling
  • Reinforced housing made of carbon laminated steel, protected against corrosion by powder coating polyester resin RAL 5010. Finish C3
  • Casing fully latched and adjustable
  • Self-cleaning turbine and reinforced impeller with high-performance backward (reaction) blades made of carbon laminated steel dynamically balanced to minimize noise and vibrations.
  • Black painted RAL 9005
  • Squirrel cage standardized asynchronous IEC motor with IP-55 protection and class F electrical insulation. Standard voltages 230/400V 50Hz for three-phase motors up to 4kW and 400/690V 50Hz for higher powers
  • Motor with feet (B3) supported on motor support foot
  • Models of size 500 and above are supplied with a front support foot, for the other models the front support foot is optional
  • Available in the following orientations (to be indicated in case of order): LG0, LG45, LG90, LG135, LG180; LG225, LG270, LG315, RD0, RD45, RD90, RD135, RD180; RD225, RD270, RD315
  • Maximum working temperature in continuous: air transported: 130ºC
  • Maximum ambient temperature: 60ºC


Biomass Case Study

When Axair supplied two of its highly efficient fans in the NIMUS range into a large UK Biomass gas site the aim was to improve system efficiency and cost reduction. The fans were fitted with 75kW motors along with matching inverters and were required to provide both ventilation and combustion air to the process and site. Accurate and reliable airflow, plus controllability, were key to the efficient running of the site. The Storm NIMUS fans were installed with full confidence and have proved to be the correct product for this application. Axair are familiar with supplying industrial fans for use within renewable energy generation and continue to handle a large amount of Biomass fan enquiries. Read our Biomass, Biofuel & Renewable Energy guide here.


Typical Applications:

Suitable for moving clean or dusty air. Designed to be installed in conduit for suction or impulsion. Typical applications of the Nimus / Nimax range of medium pressure centrifugal fans include:

  • Paint booths
  • Collection of dust
  • Food industry dryers
  • Food processing
  • Incineration
  • Odour control in industry
  • Indoor / outdoor pollution control
  • Big buildings
  • Malls
  • Factories / Industrial buildings
  • Warehouses
  • Extraction of smoke
  • Boilers and ovens
  • Manufacture and treatment of chemical products
  • Tunnels, underground stations

For more information about the range and how it could work for your application, please contact our team on 01782 349 430, email [email protected] or visit the medium pressure backward curved centrifugal fans page.