Cross flow fans and axial fans profile

5 12 2011

Cross flow fans are otherwise known as Tangential Fans or Tubular Fans. It is generally tubular in shape with its length being more important than its diameter.

The air flow is in the tangential direction to the fan itself and hence the alternate name. Due to this, these fans are generally more efficient than a number of their counterparts.

Cross Flow Fans work by improving the dissipation of the heat generated by other components through circulation.

If the nearby component is already cool or the humidity is particularly high then these fans are not likely to make much of an impact.

Its advantages are that it is compact and runs without much noise amongst other things. It is mostly used in air conditioners, heating and cooling equipment to dissipate the heat generated in these components.

These fans have adjustable speed controllers and are more suited to use inside other main components.

In contrast, axial fans consist of a rotating arrangement of blades which act on the air. Usually contained within a casing, the blades used force the air to move parallel to the shaft about which the blades rotate.

The name of this specific fan comes from its propensity to blow air along the fan, and they have many modern day applications.

Within the electronics industry specifically, they are used to for cooling certain items of equipment. This is a vital cog within the whole process of constructing and transporting electrical connectors for example.

The larger varieties of axial fans are seen in mechanisms such as wind tunnels. Smaller types can be used for all manner of electronics work.

Given the size of some wind tunnels, it gives you an idea of how large certain axial fans can actually be.

For additional details on both of the antistatic products mentioned above, as well as the benefits of static training, visit



The importance of thermal management

22 11 2011

Information Technology today is touching every walk of life. From banking to ticket reservation, billing to accounting, trading stocks to ATM’s, we simply cannot do without the use of Information Technology in the modern age. 

The modern age is about the speed at which things happen. This is possible because of one particularly important component in the computer, the processor. However, with so much of an electric impulse passing through them, processors are bound to heat up at a rapid speed. This calls for effective thermal management in computers.

Thermal management is the process of successfully controlling or cooling the processor in the computer so that the heat build-up will not harm the way in which the device operates. The earlier models had heat sinks attached close to the processors that absorbed the heat, allowing the processor can do its job effectively. 

Heat sinks are ‘L’ shaped aluminium strips which absorb the heat rapidly. Constant research into faster processors has given us modern day computers that enable us to transfer money, reserve tickets, search for information, and download games and movies swiftly. This speed heats up the processor rapidly.

However, simply installing the heat sinks was not adequate enough to dissipate heat with the same speed it was being generated. Researchers also found a solution for this though. They devised small fans that blow out air through the processors continuously. With a good rpm, they drive out the heat generated in the processors effectively.  

The protection of intricate devices such as surface boards from extreme heat is a basic, yet essential, requirement within the electronics industry.

Challenger Components Ltd have extensive knowledge of thermal management and cooling solutions. For further information on anything relating to this subject, as well as the full range of products from a number of established brands, visit




A-Z of electrical components – Fans

18 10 2011

The principal aim of an axial fan is to provide a sustainable cooling solution. Due to the versatility of the product though, this can translate to a ceiling fan within a household as well as a large piece of machinery in a busy industrial factory.

Different customers require axial fans for different functions.  Those who wish a fan to be used in the home for example, may require the fan to produce minimal noise.

For those working within a factory this may not be an issue of any real consequence.

ebm-papst is a well known axial fan manufacturer, renowned for producing high quality, energy efficient products.

Ceiling fans, table fans, compact fans, computer cooling fans, motor vehicle cooling fans can all be axial fans, depending on the manufacturer.

Fans in vehicles such as cars usually prevent the car from overheating by discarding hot air produced by the combustion in the engine. 

The same thing applies to computers, where a fan is encompassed into the design of the product to prevent it from overheating.

How do they work?

The blades within axial fans force the air to a shaft in a parallel direction. The air is then blown along the axis of the fan to produce a continuous flow of air. 

The cooling intensity of the fan depends on how quickly the blades move, or are set to move.

Some axial fans are used in air conditioning applications, both for consumer purposes, and within the electronics manufacturing industry.

Axial fans come in a variety of sizes to accommodate all these different settings. However, standard diameters for axial fans range from 300-400 mm and 1800-2000 mm.

For additional details on axial fans, as well as number of other products available from ebm-papst and other manufacturers, visit

ebm-papst praised for ‘innovative strength and dedication’

14 10 2011

There is a growing feeling that the use of fans is not considered enough by companies as they strive to help the environment. ebm-papst is striving to change this.

Considering the vast emphasis on air conditioning, heat recovery and ventilation in offices throughout the world, is it time we all gave the subject more attention.

Helen McHugh, Head of Sustainable Technology at ebm-papst UK, was certainly enthusiastic about the impact EC fans could have.

“With the built environment under increasing pressure to reduce energy consumption for both economic and environmental reasons, it is now more important than ever for people to realise the energy saving potential of EC fans.

It is important to let people know that they can easily retrofit EC fans into their existing HVAC applications, offering not only significant energy savings but also improved performance and reduced noise.”

 The company were recently praised for their innovative work in this are with a prestigious industry award.

ebm-papst was named as one of the winners of the “365 Landmarks in the Land of Ideas” competition. The RadiCal centrifugal fans in GreenTech EC technology caught the eye of the judging panel and were enough to mark out the industry leader as established innovators.

President Winfried Kretschmann was particularly enthusiastic about the achievement: “The winners of the ‘365 Landmarks in the Land of Ideas’ competition have all distinguished themselves with particularly innovative and groundbreaking projects. They are an example of the innovative strength and dedication in this country,” he stated.

Based on the latest advances in aerodynamics, this development changes the impellers so “radically” that the efficiency is increased by 50% and the highest energy efficiency is attained for ventilation and air-conditioning applications.

For additional information on ebm-papst, and a number of other leading brand manufacturers with the electronic components industry, visit today.

A-Z of electrical components: E – ebm-papst

28 09 2011

ebm-papst is one of the most respected market leaders in the production of fans and motors for the electronics manufacturing industry.

From compact electronic cooling fans to energy efficient applications for a variety of industry purposes, ebm-papst has been an established name in the manufacturing of advanced air movement products for some time.

The company have established their reputation primarily through the competent manufacture and supply of items such as axial fans, centrifugal fans and hot air blowers.

Axial fans have the advantage of having a low installation depth, a low noise level and outstanding efficiency in general.

They are an extremely versatile product and can therefore be used across a wide variety of purposes.

The company also supply a fantastic range of centrifugal fans, with both backward and forward curved blades.

The company have always been committed to investment within areas such as development and research.

This attitude has meant that their energy saving products can be used within areas including telecommunications and building services.

The importance of fan installation within the electronics manufacturing industry cannot be overstated.

The increased airflow, low energy consumption and noise reduction mean that they are an invaluable tool when working with highly technical equipment.

Challenger Components have been an approved distributor for ebm-papst for a number of years, supplying their range of products to a variety of different industries.

Details on all such products are readily available on the challenger website, along with a more detailed idea of the type of industries which the products can be used within.

For additional details on ebm-papst, as well as further information on a host of additional leading brand names and manufacturers, contact

What is EC Technology?

23 09 2011

Find out more about EC technology, ebm-papst products and forthcoming EU regulations that will have a major impact on thermal management and electrical components in the near future.

Did you know that EC motors for fans consume on average about 30% less electricity than conventional AC motors? EC stands for Electronically Commutated which means it’s a fan with a permanent magnet motor (PMM).

EC motors have been around for many years and are more efficient than AC motors because they use permanent magnets rather than induce a secondary magnetic field in the rotor.

EU Regulations on Energy Efficient Fans

Launched as part of the European Union’s plans to reduce CO2 emissions by up to 20 percent by 2020, the Energy-related Products Directive (ErP) will have a significant impact on businesses that rely on many types of fans, especially industries such as refrigeration, IT manufacturing and air conditioning units.

The ErP Directive comes into force in two stages – in 2013 and 2015 – with stringent requirements for fans and their efficiency in the power range of 125 watts to 500 kilowatts.

There will be minimum efficiency requirements, which could see as many as 30 percent of all currently available fans failing to satisfy the new regulations. By 2015, when the second round of energy efficiency measures come into force, as many as 50 percent of the fans in operation today could no longer meet efficiency standards.

Fans and Blowers are commonly used in electrical power production, metal manufacturing, mining, food processing and any industrial setting which requires controlled conditions.

They can also be used as a low cost replacement for air conditioning, particularly where a commercial or industrial building requires a specific set temperature.

Blowers are usually used to exhaust foul air and replace it with fresh air while fans simply fan highly pressurised areas. There are number of different fans and blowers that are used for specific jobs. These include: axial fans; mixed flow or diagonal fans; radial fans and cross flow blowers.

Ebm-Papst EC Technology

One of the leaders in the production of energy efficient fans that meet the ErP Directive is Ebm-Papst. Ebm-Papst has developed GreenTech EC technology, which already exceed the 2015 ErP efficiency targets.

Their range of RadiCal EC fan systems are 50 per cent quieter than previous models and use 50 per cent less energy, too.

Challenger Components Ltd is the approved distributors for ebm-papst UK who have many years of experience in Thermal Management and Cooling Solutions, as well as fan and blower applications.

Visit: for more information and to discuss your requirements in more detail.

Axial Fans & Blowers: Choosing the Best Solution

21 09 2011

Learn more about axial fans and blowers and what you need to bear in mind when choosing the best solution for your specific needs.

In addition to considerations such as pricing and effectiveness there are a number of additional considerations that need to be taken into account when considering axial fans and blowers. These include service life, durability, stability and thermal function. Quality axial fan and blower manufacturers will be able to meet all of these requirements so you can be sure that you are purchasing the best product for your particular needs.

Another extremely important area to consider, increasingly so following the introduction of stringent EU legislation, is the energy efficiency of the fans and blowers themselves.

New EU legislation under the Energy-related Products Directive (ErP) comes into force in two stages – in 2013 and 2015 – with stringent requirements for fans and their efficiency in the power range of 125 watts to 500 kilowatts.

The new rules could see as many as 30 percent of all currently available fans failing to satisfy the new regulations. By 2015, when the second round of energy efficiency measures come into force, as many as 50 percent of the fans in operation today could no longer meet efficiency standards.

Ensuring that the fans and blowers that you purchase meet with these stringent energy requirements is a must for any future projects.

Manufacturers of Energy Efficient Fans and Blowers

Without a doubt the market leader in the development of energy efficient fans and blowers is Ebm-Papst. The company have made massive strides in increasing the energy efficiency and environmental impact of their fans in recent years.

Chief among their innovations is the introduction of a RadiCal EC fan system that is 50 per cent quieter than previous models and uses 50 per cent less energy. Ebm-Papst claim it is the best choice for performance in air/water heat pumps

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