Over 40 years of efficient air, gas and vapor movement and compression for critical and challenging processes.

ExVel™ turbo fans have unique, industry leading impeller and bearing technologies delivering the highest differential pressures available in the fan industry. They can replace more costly centrifugal compressors or multiple blowers with a single unit. Our fans can be produced from a variety of materials, are gas tight, and are applied in a wide range of operating pressures and temperatures.

Benefits of Turbo Fans

  • A single ExVel™ turbo fan can deliver flows and pressures, which may take the place of multiple other fans or blowers, which are limited in flow or pressure rise capability, saving substantial space, energy, and maintenance costs over the life of the equipment
  • Designed for efficient and reliable performance in challenging applications, which may require high pressures, high temperatures, and/or aggressive or hazardous process gases
  • Gas tight standard design, available in a variety of materials of construction, fully automated control options.
  • Over 40 years of experience with thousands of installations in numerous applications.

ExVel™ Turbo Fans

Unique impeller and bearing ​technologies can provide up to 4 times more pressure rise in a single stage than traditional fans and blowers while handling volumes up to 200 m3/sec (400k cfm). Several times higher pressure development can be achieved in multi-stage arrangements.

Our turbo fans are a mainstay for process air, process gas, and MVR (Mechanical Vapour Recompression) applications, providing reliable and efficient performance to the plant owner.

Features

  • Up to 2.0 compression ratio single stage (standard air density basis).
  • From full vacuum to 20 bar (290psi) design pressures.
  • Gas tight casing design standard.
  • Materials of construction options to meet challenging process gases & environments.
  • Wide turn-down capabilities with several control options.
  • Options to meet industry standards such as, API, PIP, PED, ATEX and more

Download our brochure for more information.

ExVel™ Turbo Fans

ExVel™ Composite

Howden's ExVel Composite turbo fans have revolutionized safety, reliability, and performance in the fan industry. Our unique carbon fiber composite technology is specifically engineered to combat high-cycle fatigue and results in exceptional life and reliability. Combined with our unique ExVel turbo fan technologies, Howden offer unmatched fan performance and reliability.

For applications requiring start/stop cycles or process/load changes, the ExVel Composite has changed the game with technology, which can eliminate fatigue cracks and failures known to plague steel impellers. This allows users to substantially reduce and even eliminate unplanned downtime, planned shutdowns, and routine maintenance costs related to steel fan impeller and fatigue, and more importantly increase reliability and plant safety.

Download our brochure for more information.

ExVel™ Composite

ExVel™ eMVR

The innovative eMVR turbo fan brings simplicity of design, fit, form, function, and many options to make it the EASY MVR solution for your vapor compression applications of less than 10 tons of vapor.

Features

  • Robust fan casing with an integral motor - compact installation, eliminating the need for costly and space consuming ducting and support structures.
  • ExVel impeller - mounted directly to the motor shaft and providing high efficiencies of over 80%
  • Multi-stage carbon ring seal with purge and condensate drain provisions - ensures process steam remains isolated from atmosphere.
  • Rotor bearing seals are separate and independent from the fan casing seal with ventilation between the two - ensures oil-free operation for the process steam, and isolation of process from the machine bearings.
  • Optional features such as machine condition monitoring packages, seal purge conditioning packages, installation base and more - provides design flexibility, added functionality, and maintenance friendly operation.

ExVel™ eMVR

Mechanical Vapor Recompression

Howden understands the unique process, aerodynamic, mechanical, and operational challenges requirements of Mechanical Vapor Recompression (MVR) applications, which differ from almost all other applications for rotating machinery industry.

The ExVel™ turbo fan is relied upon across thousands of installations in more than 70 countries to provide the optimum MVR vapor compressor solution. With our extensive MVR application experience over 45 years, we have the know-how to provide the best solution for your plant with our industry leading technologies.

Our unique ExVel turbo fan impeller technologies are unsurpassed in fan industry in terms of strength, rigidity, and load capability. Our fan rotor system is designed and constructed for the application with impeller, shaft, and bearing technologies to stand up to the demanding conditions imparted by tough MVR applications due to process and temperature or chemistry challenges.

While MVR process systems are initially specified by the user to operate in clean steady state conditions, unforeseen process foaming or carryover may occur due to process or operational changes, which can lead to difficult operating condition and environments for the vapor compressor. To provide the highest degree of reliability, users have relied on Howden’s unique ExVel turbo fans to keep their operation online.

Find out more about Howden’s MVR technologies

Mechanical Vapor Recompression

ExVel™ Turbo Fans

Unique impeller and bearing ​technologies can provide up to 4 times more pressure rise in a single stage than traditional fans and blowers while handling volumes up to 200 m3/sec (400k cfm). Several times higher pressure development can be achieved in multi-stage arrangements.

Our turbo fans are a mainstay for process air, process gas, and MVR (Mechanical Vapour Recompression) applications, providing reliable and efficient performance to the plant owner.

Features

  • Up to 2.0 compression ratio single stage (standard air density basis).
  • From full vacuum to 20 bar (290psi) design pressures.
  • Gas tight casing design standard.
  • Materials of construction options to meet challenging process gases & environments.
  • Wide turn-down capabilities with several control options.
  • Options to meet industry standards such as, API, PIP, PED, ATEX and more

Download our brochure for more information.

ExVel™ Turbo Fans

ExVel™ Composite

Howden's ExVel Composite turbo fans have revolutionized safety, reliability, and performance in the fan industry. Our unique carbon fiber composite technology is specifically engineered to combat high-cycle fatigue and results in exceptional life and reliability. Combined with our unique ExVel turbo fan technologies, Howden offer unmatched fan performance and reliability.

For applications requiring start/stop cycles or process/load changes, the ExVel Composite has changed the game with technology, which can eliminate fatigue cracks and failures known to plague steel impellers. This allows users to substantially reduce and even eliminate unplanned downtime, planned shutdowns, and routine maintenance costs related to steel fan impeller and fatigue, and more importantly increase reliability and plant safety.

Download our brochure for more information.

ExVel™ Composite

ExVel™ eMVR

The innovative eMVR turbo fan brings simplicity of design, fit, form, function, and many options to make it the EASY MVR solution for your vapor compression applications of less than 10 tons of vapor.

Features

  • Robust fan casing with an integral motor - compact installation, eliminating the need for costly and space consuming ducting and support structures.
  • ExVel impeller - mounted directly to the motor shaft and providing high efficiencies of over 80%
  • Multi-stage carbon ring seal with purge and condensate drain provisions - ensures process steam remains isolated from atmosphere.
  • Rotor bearing seals are separate and independent from the fan casing seal with ventilation between the two - ensures oil-free operation for the process steam, and isolation of process from the machine bearings.
  • Optional features such as machine condition monitoring packages, seal purge conditioning packages, installation base and more - provides design flexibility, added functionality, and maintenance friendly operation.

ExVel™ eMVR

Mechanical Vapor Recompression

Howden understands the unique process, aerodynamic, mechanical, and operational challenges requirements of Mechanical Vapor Recompression (MVR) applications, which differ from almost all other applications for rotating machinery industry.

The ExVel™ turbo fan is relied upon across thousands of installations in more than 70 countries to provide the optimum MVR vapor compressor solution. With our extensive MVR application experience over 45 years, we have the know-how to provide the best solution for your plant with our industry leading technologies.

Our unique ExVel turbo fan impeller technologies are unsurpassed in fan industry in terms of strength, rigidity, and load capability. Our fan rotor system is designed and constructed for the application with impeller, shaft, and bearing technologies to stand up to the demanding conditions imparted by tough MVR applications due to process and temperature or chemistry challenges.

While MVR process systems are initially specified by the user to operate in clean steady state conditions, unforeseen process foaming or carryover may occur due to process or operational changes, which can lead to difficult operating condition and environments for the vapor compressor. To provide the highest degree of reliability, users have relied on Howden’s unique ExVel turbo fans to keep their operation online.

Find out more about Howden’s MVR technologies

Mechanical Vapor Recompression

 
 

ExVel Composite

The ExVel® Composite turbo fan is changing the game in glass production, offering unrivalled safety and reliability while saving energy and lowering operating costs.

Reducing CO2 emissions

The steel industry is one of the biggest sources of carbon emissions. ArcelorMittal is actively engaged in delivering carbon-neutral steel. Find out how the ExVel turbo fan is helping them in their journey.

Global MVR coverage

The ExVel turbo fan is the ideal technology for energy recovery through mechanical vapor recompression (MVR). Thousands of installations across the world support multiple steam based industrial processes.

Product Brochures

Find out more abut our turbo fans by accessing our ExVel products brochures including the ExVel Composite.

What is Glass?

ExVel composite fans are abrasion resistant and able to withstand high temperatures making them an ideal solution for the glass industry. But what is glass and how is it made?

Maintenance Partners

Maintenance Partners by Howden (HMP), rotating equipment and turbomachinery aftermarket specialists. Maximizing the performance and longevity of your equipment, regardless of OEM.

 

Technical Library

Access and download product brochures and specifications.

ExVel Fans

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