There are two basic types of industrial fans that you can use extensively in the airflow systems of your premises and facilities: axial fan and centrifugal fan. In many cases, you will definitely use both types of fans in your industrial ventilation system. Axial and centrifugal fans differ in many ways. Axial and centrifugal industrial fans also come in different styles to serve different applications. Let's discuss these different types of industrial fans.
Commercial fans and airflow systems are an integral part of large venues and facilities. Need to choose the best fan for your application to reduce the general price of maintenance, repairs and replacements. Fan failure can bring your operations to a standstill and result in costly downtime for your site and facility, in addition to increasing the speed of repair or replacement of a failed fan. Therefore, it is important to work with a ventilation expert to select the ideal type of fan for your ventilation system. In this article, we'll review some typical commercial fans that may meet your airflow needs.
What isAxial fan
Axial fans move air along the axis of the fan. This design helps them relocate a lot of air while reducing fixation stress. Therefore, they are often used for general ventilation as well as for convenient air conditioning in environments with low concentrations of pollutants. Axial flow commercial fans are often mounted on ceilings and walls because of their light weight and small size. Axial fans also generally set you back more than centrifugal fans. However, these fans are generally noisier than centrifugal fans and are generally not suitable for "dirty" air with higher levels of contaminants such as dirt and moisture. Also, while axial fans often use much less power than centrifugal blowers, they also tend to be much less energy efficient than centrifugal fans.
Three of the most common kinds of axial fans consist of:
- Propeller fans
- Tube axial fans
- Vane axial fans
Prop Fans
Prop fans are one of the most common types of fans. You can find this basic fan design in a ton of applications, including ceiling fans you might find in your home. However, commercial propeller fans are designed to withstand harsher environments to provide air circulation throughout the commercial center. Pillar industrial fans provide high air circulation and low pressure. If you are looking for low-cost commercial fans and ventilation equipment for general purposes, propeller fans may be the best choice for your facility. They are great for moving large volumes of air for cooling as well as general ventilation for clean air.
Tube Axial Fans
Tubular fans are essentially propeller fans that are installed inside the cylinder to increase airflow. These commercial fans use better power efficiency and greater fixed stress than propeller fans. They are suitable for tool stress, high volume applications. Many facilities use these fans for overall airflow applications. For example, the moving air is polluted by exhaled carbon dioxide, small amounts of smoke, or heat in the airflow system.
Vane axial fans
A vane axial fan has a similar layout to a ducted axial fan, but utilizes outlet vanes to aid in straightening and direct jet flow. Bladed axial fans are generally the most energy efficient option for axial commercial fans. They work well with tools to relocate large volumes of air to high pressure. Similar to other axial fans, they are ideal for cooling and basic ventilation in facilities. Nonetheless, they perform equally well in commercial airflow systems in emergency situations. They use rapid air supply and removal to deal with issues like warmth, smoke and smog. However, if you're dealing with high levels of particulate matter (like dirt), you might want to check out a centrifugal fan.
What is Centrifugal fan
Centrifugal fans, also often referred to as blowers, draw air into the center of the fan and use an impeller to move the air radially through the fan, which is then worn at a 90° angle. These types of industrial fans are generally quieter and more efficient than equivalent axial fans. They also provide a more stable air flow and work well for high pressure requirements, such as relocating air through ductwork. Several centrifugal fans work well in jet streams with particulates and other contaminants. Ventilation experts may recommend centrifugal fans for efficient cooling and airflow. Different blowers utilize different blade designs to serve different purposes.
5 common centrifugal fan applications include:
-
Backward inclined aerofoil blades centrifugal fan
-
Radial blades centrifugal fan
Forward Curved Blade
Blowers with forward curved blades are a reliable alternative for basic air flow functions. They are excellent for relocating reduced to medium air quantities at greater stress. They supply a small style with reduced operating speed. Forward curved centrifugal fans are likewise incredibly peaceful. Nevertheless, these fans are best for clean air applications, as material can accumulate on the brief curved blades. Typically these types of commercial fans are utilized in applications where static stress is too expensive for vaneaxial fans.
Radial Blade
Radial blade centrifugal blowers use straight blades that move radially inside the fan. These fans use reduced to medium quantity air flow at high pressures. The blade layout in these fans assist restrict material building, making them perfect for lots of sturdy applications. Many centers utilize radial blade centrifugal fans for moving procedure materials. They are also efficient in relocating air with greater focus of particulates. Radial blade fans function well in heat and even destructive applications.
Backward Inclined Blade
Backwards inclined blades in centrifugal fans are several of the most reliable fans offered and also are also very quiet during procedure. Backwards inclined centrifugal fans use tool to high air movement at lower stress. Nevertheless, the blades can be prone to material buildup. They might likewise be extra prone to disintegration than other types of centrifugal fans. For that reason, you're usually far better off using these in clean air settings.
Radial Tip Blade
When you need reliable fans that can still deal with some dust and also particulates, radial suggestion bladed fans may be a wonderful service. Many people see them as the middle ground between forward curved and also radial centrifugal fans. These commercial fans work well with air streams moderately infected with smaller particulates or high wetness levels. Radial tipped blades aren't constructed for sturdy material handling. Nevertheless, they can work well in environments with reduced to tool focus of contaminants. For that reason, with these fans you get a crossbreed of the effective forward curved fan and the sturdy, particulate-handling radial fan.
Typical Applications of Centrifugal Fans
1. Industrial cooling:
Industrial fans are often described as industrial cooling fans used to displace air or gas from an additional indication. The primary function of a fan is to drive cool air and blow hot air out of the commercial environment.
In the field of concrete manufacturing, cooling fans are used extensively. It blows cold air into the cooler and cools the clinker from 1500oC to 100oC.
Likewise, in the field of glass manufacturing, cooling fans are also required. They are used to cool down the temperature of the furnace wall surface to cool the glass material.
Common commercial cooling fans used for cooling are airfoil, backward-inclined, or high-pressure radial fans.
However, the extraction of hot air depends on the build for style and detail lovers. These cooling fans are large in diameter, which helps them generate the large volumes of air needed for commercial processes.
2. Air reflow:
In heavy industry, warmth and energy production are huge. Steady and regular airflow is required to maintain proper fuel combustion.
For example, centrifugal fans in commercial central heating boilers allow fresh air to be blown into the system. This process preserves the oxygen level required for ignition.
In the steel production sector, industrial blood circulation fans are used to distribute cool air directly into furnaces. Blood circulation maintains an even temperature in the oven.
In power plant boilers, forced draft fans (FD) provide the air needed for gas combustion. This process requires air to be pushed into the furnace through the combustion air supply system.
3. Re-dusting:
Also, in recessed system applications, backward tilt or airfoil centrifugal fans are used. Fans are installed within the cyclone's recommendation or filter system to remove debris from the air.
Backward-curved blower and backward-sloping centrifugal fan layouts are the most quintessential innovations for cleaning air, while industrial exhausts are great for handling impurities.
4. Air dry:
Industrial forced or induced ventilation fans are required in industrial programs to regulate temperature levels and humidity web content. Hot air is forced through a fan to distribute the air needed to remove extreme humidity.
In the paper industry, these fans are used to dry paper. This can happen by passing the material in a heated oven or by wearying the air in the pulp.
In a similar fashion, in the food processing industry, centrifugal dryer fans are required. The fan removes moisture from the food before it is delivered to the product packaging.
Also, in the concrete market, dryer fans are used to dry clinker in kiln systems.
In every industry, centrifugal fans have numerous dust collection applications. There are many different dust collectors that can remove hazardous materials such as process dust. The fans used are either forced fans or induced draft fans through the system.
Redusting procedures require centrifugal fans to operate in both low pressure type systems and pressure type system applications.
Centrifugal fans used for industrial drying are airfoil, backward curved, backward inclined and radial fans.
5. Conveying materials:
Common centrifugal fans required for shared materials are high pressure radial fans or market exhaust fans.
Industrial centrifugal fans are used to process and share materials. Ordinary centrifugal fans can easily handle fine and lightweight materials such as sand, plastic pallets, sawdust and wood chips. And for heavy commercial materials such as steel and other alloys, wear-resistant centrifugal fans are also required.
Typical Applications of Axial Fans
Because axial fans are excellent for heavy-duty air flow, they make phenomenal air conditioning systems for big centers or private pieces of machinery. The majority of computer hard drives use little axial fans to prevent laptop computer or home computer from overheating. Axial fans can cool down cooling systems, fridges and vending makers.
The essential distinction between applications for axial and centrifugal fan systems is the severity of the requirement for air flow. Centrifugal fans are used in high-pressure applications, such as industrial drying and filtering. Axial fans are a far better fit for a/c, cooling, air flow, or exhaust applications.
These fans are also superb for cooling and aerating larger locations, specifically storage facility floorings. They suck cozy air away from the space or maker while replacing it with awesome air. Axial fans act like air filtering and air flow systems-- they can blow in fresh air while wearing down polluted air, guaranteeing tidy, amazing air for warehouse team.
Normal applications for this type of fan might consist of:
- Stockroom exhaust and air flow systems
- Paint booth ventilation
- Furnace airflow systems
- Air flow in wastewater pump stations
- Fume exhaust from welding cubicles
- Industrial cooking areas
- Auto shops and garages
- Spot air conditioning for heat-generating machinery
- Paper and steel mills
- Textile manufacturing facilities
- Transport manufacturing centers
- Air cooling down for blacksmithing forges and kilns
- Flooring cooling in engine and equipment spaces
- Taking full advantage of airflow via ductwork
The difference between axial fan and centrifugal fan
With all elements being equal, the various fans provide a lot of output. When comparing axial fans and centrifugal fans, there are some key points to consider.
Axial models generate low pressure airflow. In contrast, centrifugal fans generate high-pressure airflow and function much better in ductwork applications.
Nonetheless, there are two main types of centrifugal fans. One has a forward curved blade system that handles less air and produces less sound. Various others actually have a backward curved blade system that moves more air, but is louder.
Speed and noise
You can achieve higher run rates on axial designs. The same is true for peripheral speed. The axial version usually runs faster. Despite their slower speeds, centrifugal fans produce a more consistent airflow than axial fans, and they're also less likely to be overloaded.
Pressure and air volume
Axial fans have greater dynamic pressure than centrifugal fans. Dynamic pressure refers to the pressure created by the movement of air. Because of this, axial fans can also relocate larger amounts of air.
Cost and life
In general, axial fans are more portable and less of a consideration than centrifugal fans. They're also generally less expensive than various other designs, which may explain why axial fans are so prominent.
Energy efficiency
Another significant difference between axial and centrifugal fans is power performance. Axial flow designs require less operating power, but centrifugal fans are more energy efficient.
Centrifugal Fans: Advantages and Disadvantages
From dust collection to flue gas control, centrifugal fans have a lot to offer industrial facilities. Below are some of the advantages and disadvantages of using centrifugal fans in your commercial application.
Developed for operation in harsh atmospheres, centrifugal models are more durable and typically run longer than typical axial versions.
Because centrifugal fans generate consistent airflow, they achieve high stationary efficiency and are ideal for maintaining large air systems.
- Centrifugal fans are best suited for high pressure applications.
- Their closed blades make them more durable and less prone to damage.
- This fan works well in harsh conditions.
- Disadvantages of centrifugal fans
- Centrifugal fans generally use more power and absorb more power than various other types.
- They have greater market value.
- This fan reduces air volume.
Axial Fans: Advantages and Disadvantages
Axial fans are ideal for airflow and exhaust applications in commercial environments. But before buying this kind of fan, you should understand its pros and cons. Below are some of the most common advantages and disadvantages of axial fans.
- Compared to other types of commercial fans, axial fans are generally small and very easy to install.
- They produce low pressure, high volume airflow, ideal for cooling spaces.
- They are generally more energy efficient than other styles.
- Such fans are usually inexpensive.
- Disadvantages of axial fans
- Axial fans cannot generate pressure.
- The faster it runs, the louder this fan will be.
- This type of fan is not the best choice for ductwork.
Choosing the Best HVAC and Ventilation System Fans
Commercial facilities should understand the difference between axial and centrifugal exhaust fans in order to make the best purchasing decision for their building.
Langdi has been providing high quality centrifugal fans, axial fans and fan coils and other related products. We design our products for precise air control and long-lasting use. Whether you need help with an industrial ventilation problem or need to replace a fan, Langdi Group can help. Our goal is to exceed your expectations and find the highest quality solutions at unmatched value.
Read More:
