Medium Pressure Centrifugal Fans: Backward Curved Benefits

What is a backward curved centrifugal fan? The backward curved centrifugal fan design uses the centrifugal force generated by a rotating disk, with blades mounted at right angles to the disk, to impart movement to the air or gas and increase its pressure. The assembly of the hub, disk and blades is known as the fan wheel, and often includes other components with aerodynamic or structural functions. The centrifugal fan wheel is typically contained within a scroll-shaped fan housing. How does a backward curved centrifugal fan work? Backward cu...


Axair Fans For The Rail Industry & Rolling Stock

Modern rail transport technology has a great demand for high-quality fans worldwide. These specially designed fans are used in underground and suburban railways, regional and high speed trains for the cooling of traction engines, transformers, electronics and air-conditioners. Our fans have successfully been in used in these demanding applications on every for many years and meet the most diverse requirements with regard to mechanical shock, temperature range and power supply. Specific rail fan developments enable smooth operation with: v...


Marine Environments | Engine Room Ventilation

Marine Environments: Engine Room Ventilation There are two situations that can greatly reduce an engines life and efficiency; the use of dirty fuel and more relevant to this article, inadequate engine room ventilation and ventilation of engine components. In short, engines that ingest cool air burn more efficiently than those that ingest warm air. Engines produce a lot of heat, that’s how they operate and how they produce power. They must be adequately cooled to provide ample ventilation for continued operation. The warmer an engine room i...


‘E’ Is For Energy Efficiency | Introducing The New E-Wheel

Having previously offered both the W and B series of backward curved impellers, Axair supplier partner Rosenberg have developed a new addition to the range; the E-Wheel.   Driven by an increased market requirement concerning noise levels Rosenberg's new E-Series impeller design produces significant increases in energy efficiency and major reductions in operating noise levels. It features seven aerofoil design blades for high flow and low to medium pressure applications like computer room air conditioning and air handling (CRAC/...


Axair Offer Sound Advice & Expertise…

We’re always keen to offer advice and expertise on fan selection based on requirements and application so when Axair were approached to find a solution for a unique air movement project we were only too pleased to assist. The call, from Chris Woolf, technical consultant at Rycote Microphone Windshields was typical of the type of enquiry that Axair Fans is adept at turning from a very basic outline into a detailed proposal. His initial enquiry was for “…a fan to give a steady velocity of 10m/s at a distance of 1 metre from a circular or...


Axair Offer Sound Advice & Expertise…

We’re always keen to offer advice and expertise on fan selection based on requirements and application so when Axair were approached to find a solution for a unique air movement project we were only too pleased to assist. The call, from Chris Woolf, technical consultant at Rycote Microphone Windshields was typical of the type of enquiry that Axair Fans is adept at turning from a very basic outline into a detailed proposal. His initial enquiry was for “…a fan to give a steady velocity of 10m/s at a distance of 1 metre from a circular or...


Axair: A New Air In Dome Construction

Promotional branding and marketing ideas are always changing, you could say they’re evolving as new methods and initiatives are introduced that catch the customer's eye and put the brand at the forefront of their minds. Evolution Dome, an events company specialising in temporary inflatable constructions takes its name from this evolution of ideas. Axair Fans are pleased to have helped Evolution Dome deliver some memorable and thrilling events for a wide range of customers, including local councils, corporate clients, PLC’s and some of th...


Old Belt Driven Systems Get A Makeover with The EC Fan Grid

Axair German supplier Rosenberg, offer a plethora of energy efficient fans with EC-drives for standard fans, fans for OEM-applications and ventilation units. EC-fans are utilised everywhere where economical energy usage and simple control are required An EC Fan Grid consists of various fans arranged in a grid as shown. Here the flow rate is multiplied according to the number of fans present while the pressure remains constant. The application of the Rosenberg EC Fan Grid offers numerous advantages over conventional technology and is equal...


Learning the EC Way – Specialist Training Workshops from Axair & Rosenberg

Together with our German supply partners, Rosenberg, we recently held a number of training workshops to provide a comprehensive guide to energy saving and electronically commutated fans. Held in the picturesque and peaceful surroundings of The Upper House Hotel in Barlaston, Staffordshire, we were joined by Christan Dorsch, Product Manager - EC Technology at Rosenberg and his colleague Manuel Kircher, Development Engineer - EC Technology.  Between them, Christian and Manuel possess almost 20 years’ experience in air movement and both have...


Axair On the Ball To Rescue Cold Storage Unit

There is an array of cold storage units on the market these days. These can be portable or static and vary in shape, size and number of storeys. The one thing they all have in common though is they have to stay cold! Used in industries such as catering, chemistry and healthcare, average temperatures in these units tend to be between -25°C and -30°C and fan systems play an integral role in maintaining this. Axair recently worked with a HVAC contractor with some very precise temperature requirements and this would mean the supply of a speciali...


Rosenberg: A Supplier Profile – Part 2

Last week we kicked off a series of supplier profile posts with an introduction to our German supply partners, Rosenberg. Now we’ve given you an insight into their history and location we thought we’d get to the really important stuff and tell you about what they actually do. Rosenberg support all areas of heating, ventilation and air conditioning (HVAC) including residential and commercial buildings, hotels and restaurants, museums and galleries, airports, gyms and exhibition centres. Their fan range is pretty comprehensive and include...


Rosenberg: A Supplier Profile

  As we welcome in the New Year we thought now would be as good a time as any to tell you more about our supply partners. Over the next few months we will be profiling each of our suppliers, giving you a greater insight into their history, their location, their products and their specialisms. We are kicking things off with a two-part special on one of our largest partners, the Rosenberg Group. Headquartered in Künzelsau, in south central Germany, the main Rosenberg site is neighboured by international outfits, the Würth Group and...


Cabinet Cooling Project Proves Axair Knowledge is Power

Bespoke solutions don’t always have to involve bespoke products. Sometimes, the best solution can be found by using standard products but applying them in an unconventional manner.  Axair regularly fulfil customer requirements in this way; a recent example being a project we supported for a well-known control systems company with some very specific enclosure cooling requirements. The enclosure in question was generating 11 kW of heat; they were attempting to dissipate the British Standard, BS60439, which specifies that the temperature out...


Control Offshore Fan Systems with Remote Regulation

Remote computer connection has become common place in industrial environments, changing the way that processes and procedures are undertaken and generally enhancing the capabilities of the industrial sector. Power Generation has been a great user of these remote computer connections. On-site operatives are fast becoming a thing of the past for many power generation centres as they look to monitor operations and equipment from a central location. This can prove particularly useful when the locality of a power centre is hard to reach. Industrial...


Rosenberg Primed For Rail Fan Refurbishments

As the world’s largest supplier of motorised impellers to the rail industry, Rosenberg are clearly doing something right when it comes to developing air movement products for rail applications. Their range of backward curved motorised impellers are the perfect fit for supply/evaporator or exhaust fans in railway passenger or driver cabins. Available in two variants, the DKHM and DKHR models offer optimal performance with no drive belt and no external motor or shaft. Available in sizes 225 to 630mm, they can provide air movement up to 15 300 m...