Dual axial fan

Market Insights on Dual Axial Fans

Market Overview: The global market for dual axial fans is witnessing robust growth, driven by increasing demands across various sectors, including automotive and industrial applications. According to Global Industry Analysts, the overall market for industrial and commercial fans, which includes dual axial fans, is projected to expand from approximately $10.3 billion in 2023 to about $14.9 billion by 2030, reflecting a compound annual growth rate (CAGR) of 5.4%. Notably, the Asia-Pacific region is leading this growth, primarily due to rising industrial activities and infrastructure investments, with China expected to grow at an impressive 8.2% CAGR, reaching $3.3 billion by 2030. This trend highlights the importance of dual axial fans in enhancing operational efficiency and meeting stringent environmental regulations.

Industry Dynamics: The popularity of dual axial fans can be attributed to their adaptability in various cooling applications, especially in off-road vehicles and construction machinery, where cooling demands fluctuate significantly. These fans are engineered to optimize airflow while maintaining energy efficiency, thereby addressing key customer pain points related to fuel consumption and engine wear. Additionally, the competitive landscape is marked by significant investments in research and development by leading companies to innovate and improve fan performance. As businesses increasingly prioritize sustainability, dual axial fans that contribute to reduced emissions and improved fuel efficiency are gaining traction. The evolving consumer behavior towards energy-efficient solutions is further propelling the market forward, making dual axial fans an essential component in modern machinery and automotive designs.

Types of dual axial fans

Dual axial fans are not produced in isolation but rather in series or as part of a combination of other axial fans.

• Dual axial cooling fan

  The cooling dual axial fan is mostly used in the computer world to ensure that components like the CPU and power supply are adequately cooled. Recent trends show that more environmental-friendly cooling systems are preferred. This is in light of the need for lesser noise levels and energy efficiency. The focus remains on reducing smothered performance in functional settings while extending the life span of computer hardware components.

• Dual axial flow exhaust fan

  Tunnel ventilation is sometimes done using dual axial flow exhaust fans, which direct outside air into the tunnel. In this case, the fan's motor may be installed either on the exterior of the air stream (known as a blow fan) or on the interior of the air stream (known as a suck fan). When there is no motor housing in the airstream, it is referred to as an open ducted drive configuration, which can help reduce weight and enhance performance. Blow fans are frequently used in open-ducted, under-ventilated setups, while suck fans are used in fully or over-ventilated systems. In over-ventilated systems, a backdraft may exist, causing air to flow in the opposite direction of the fan's rotation.

  When using dual axial fans for tunnel ventilation, the number of fans used depends on the distance between each fan. In longer tunnels, more fans will be needed compared to shorter tunnels. For instance, in the Channel Tunnel, dual fans are located 300 m apart, while in the West Rail Tunnel, they are 200 m apart. In contrast, only 80 m separates each fan in the Wai Wai Tunnel. Generally, the spacing of dual fans in tunnels is determined by the air speed required. In some tunnels, the air speed may need to be 10 m/s, while in others, it may only need to be 6 m/s.

• Dual turbo axial fan

  A dual turbo axial fan comprises two axial fans that are usually turbo fans. Dual turbo fans are commonly used in high-performance cooling applications, such as gaming PCs and overclocking setups. These dual fans can rapidly move massive amounts of air while keeping noise levels at a minimum.

Specification and maintenance of dual axial fans

The key specifications to consider when buying a dual fan for a specific application are air volume, air pressure, noise level, power, speed, voltage, and bearing.

• Air Volume: This is the amount of airflow that the fan can move per unit of time. Air volume is measured in cubic feet per minute (CFM) or liters per minute (LPM). A higher air volume indicates greater ventilation or cooling capability. Different applications may require a distinct air volume.
• Air Pressure: This indicates the fan's ability to overcome resistance in a given system. It is crucial in determining whether the fan can maintain its airflow in an environment with resistance, such as when it is installed in a duct. The higher static pressure ensures that the dual axial cooling fan can push or pull air against resistance effectively. It is typically expressed in inches of water gauge (in WG) or pascals (Pa).
• Noise Level: The noise generated by an axial fan is measured in decibels (dB). Users often prefer fans with a low noise level because of the importance of a peaceful working and living environment. Dual fans tend to be quieter than single fans because the fans cancel out some noise generated by each other.
• Power: The power consumption of an axial fan is measured in watts (W). It is an important factor in energy conservation and environmental protection applications. Lower power consumption indicates less electricity usage and a smaller environmental footprint.
• Speed: This is the rotation per minute (RPM) at which the fan blade rotates. It affects the airflow volume and air pressure. High-speed fans generally have higher airflow and air pressure.
• Voltage: An axial fan operates within a specific voltage range. This specification is important for ensuring compatibility with different power supply systems.
• Bearing: The bearing type used in a fan affects its performance, lifespan, and noise level. Most modern fans use fluid dynamic bearings (FDB), which have a longer lifespan and generate less noise than older technologies like sleeve bearings and ball bearings.

Maintenance

Axial fans work in challenging environments where dust and debris are often present. As a result, they must be cleaned after a precise maintenance schedule to ensure dependable performance. Manufacturers advise cleaning the fan at least once every three months. This timely maintenance reduces energy consumption and enhances the cooling effect.

As part of the maintenance schedule, users should inspect the dual axial fan for unusual signs like a whistling noise, grinding, or rubbing. Such signs indicate underlying issues that could cause the failure of the device. Whistling sounds indicate air leaks in the duct, while grinding and rubbing noises may signal bearing wear or blade damage. For any unusual signs, users should seek professional help to address the issue before it escalates to cause catastrophic failure that may shorten the life of the fan.

Users can increase the longevity of the axial fan by following the three maintenance tips provided below:

• Always turn off the power supply before cleaning or inspecting the fan. In doing so, users minimize the risk of injury from electric shock or accidents caused by moving parts.
• Use a soft brush or vacuum cleaner to remove dust and debris gently. Maintenance experts recommend this tool because it prevents damage to the delicate blades of the fan. Also, the method gets rid of dirt in hard-to-reach areas.
• During maintenance, inspect the bearings for any signs of wear or damage. If users notice any abnormalities in the bearings, they should be ready for replacement to ensure silent and smooth operation.

Scenarios of dual axial fans

The dual axial flow fan has many application scenarios thanks to its fan design and powerful performance.

• Buildings and industrial facilities

  The dual axial fans play a vital role in confirming the safe and efficient operation of buildings and industrial facilities by venting smoke, toxic gases, and harmful gases, as well as providing fresh air.

• Greenhouses and agriculture

  In greenhouses and farms, the shafts of dual fans can be used for ventilation and temperature regulation, creating a suitable environment for plant growth and livestock breeding.

• Automotive and transportation

  Dual fans are used in auto radiators to cool down the engine. In trains, planes, ships, etc., dual fans are used for cabin ventilation and cooling to improve comfort and safety.

• Refrigeration and cooling systems

  In refrigerators, freezers, cold storage, and other equipment, dual fans are used to promote the circulation of cold air and ensure the preservation and freezing effects of food.

• Smoke exhaust and fire protection

  In smoke control and fire protection systems, dual axial fans are used to realize smoke exhaust and ventilation functions, ensuring the safety of people and the rapid evacuation of smoke in case of fire emergencies.

• Mining and underground operations

  In mines and underground working sites, dual axial fans provide fresh air and ventilation for the personnel and equipment to ensure safe production and operation.

• Clean rooms and laboratories

  Dual axial fans are used for ventilation and air exchange in clean rooms and laboratories to guarantee the safe and orderly operation of the experiments and ensure the cleanliness and sterility of the working environment.

• Security and surveillance systems

  In monitoring and surveillance systems, dual axial fans cool the equipment and preserves its stability and safety, especially in high-density surveillance rooms and control centers.

How to choose dual axial fans

When buying an axial cooling fan for resale, it's crucial to pick one that will bother the end users. First of all, study the trend in application areas. People who use DC axial fans in the heat sink of electronic devices mostly prefer smaller fan blades. For market surveillance, 70mm dual axial fans and smaller sizes are the most popular in that area. On the other hand, industrial users prefer larger sizes that can move a big volume of air. Something else, find out the voltages that will satisfy most users. The 12V, 24V, and 220V dual axial fan models perform well in application areas. One can settle for these three models to cover most end users.

Check the material used to make the fan housing and blades. A double-blade axial fan with a metal housing can survive harsh environments. Metal housing will not bend easily, and it will tolerate high temperatures. Though all metal fans are expensive, some industrial users will pay a higher price for them. Merchandise with metal housing in areas where most users demand durable cooling solutions.

The dual fan needs a reliable supplier. Check the supplier's production capacity, supply record, and experience. An experienced supplier can offer competitive prices due to mass production. Competitive prices will enable one to enjoy good profit margins. The supplier's ability to fulfill orders on time will also add to the profit margins. Place the order early enough to meet the anticipated fan demand in a particular season. If possible, negotiate for customization. The seller can allow one to choose the housing and blade color to fit the brand.

One can improve the merchandise's appeal with additional features such as: speed control via PWM signal; Water resistance rating (IP) ; alarm system to notify users when the fan fails; bearings used in the fan- Fans with metal bearing journals and reliable bearings are more durable.

Q & A

Q1: What is the difference between an axial fan and a dual axial fan?

A1: An axial fan uses a single set of blades mounted on a shaft driven by an electric motor. On the other hand, an dual axial fan uses two sets of blade loops stacked one over the other, mounted on a single shaft.

Q2: What are the advantages of a dual axial flow fan?

A2: A dual axial flow fan has many advantages. They can move large volumes of air. Dual axial fans are energy efficient because they move air at a lower pressure. They are also quiet because the air molecules flow smoothly. A dual axial flow fan can have two-speed ratios. It can be operated at a normal speed and a higher speed when the need arises.

Q3: What are the applications of dual axial cooling fans?

A3: The dual axial cooling fan is used in places that need the movement of high pressure and volume of air. It can be used in industries looking to ventilate tunnels, warehouses, mines, and other large spaces. It can also be used in the chemical and power generation industries.

Q4: What are the ways to store a dual axial cooling fan?

A4: Please store the fan in a dry and clean place. The temperature should be kept at -20 to 60 degrees. Please do not store the fan in the open. Keeping it covered will extend its life.