With the ever increasing technology, companies have had to find ways of moving air and fluids around. One of those ways is by using fans. A specific kind of fan called the axial fan is a type of compressor designed to increase pressure of air passing through it. The air is forced by the blades to move in a parallel direction to the shaft from which the blades originate.
The name originates from the fact that they blow air along the axis linearly. The working of this product and that of centrifugal fans is similar with the difference being in the mechanism. They use the propeller to draw air from outside and discharge it in the same axial direction. All air movements in this device are done by the propeller which achieves this through creation of pressure difference.
When choosing a product, the major concern should be the number of blades and their designs. Blades may be produced from various materials including alloys, aluminum, steel, PVC, and timber. The blade number is normally low ranging between two and six in comparison to ducted fans which have a higher number. The low number of blades is designed to stop them from affecting the high flow rate at which they work.
Blades come in different lengths and shapes. Some incorporate different blade sections along their radius. Rotor geometry and velocity triangles are not required here because the number of blades is low. These products are meant for use in regions that experience high temperatures, normally within the range of 70 degrees. They are also capable of working in humid environments if they are installed with the right type of bearings. Cheaper makes have sleeve bearings which do not last long.
These gadgets find use in many industries including chemical, woodworking, ceramic, steel, cement, and mining. Common industrial applications are building ventilation, dust removal and collection, combustion air, fume removal, and heat recovery. Propellers also find application in cooling towers, ships, helicopters, wind tunnels, hydrofoils, and hovercrafts. When they are applied for propulsion, the efficiency is the major parameter considered. Flow rate, efficiency, power consumption, and pressure rise are however all of importance if the device is used as a fan.
These devices are also widely used inside computers as cooling elements. They incorporate fluid or ball bearings to ensure consistency in operation and maximum life when they are used for cooling in computers. Models installed in computers devices are costly but function and consume power efficiently. Normally shafts are installed to be in line with the part that needs to be cooled. The device blows air towards the part or draws air past it.
Important characteristic considered during manufacture of these commodities is the relationship between the volume flow rate and pressure variation. Efficiency increases as the flow rate increases from zero up to a certain point and then starts decreasing. The pressure and power outputs also vary with increased performance.
These devices come in difference sizes and shapes. They are also customized according to the function for which they are meant. The costs differ with power dissipation, size, quality, and material used for construction among other factors.
The name originates from the fact that they blow air along the axis linearly. The working of this product and that of centrifugal fans is similar with the difference being in the mechanism. They use the propeller to draw air from outside and discharge it in the same axial direction. All air movements in this device are done by the propeller which achieves this through creation of pressure difference.
When choosing a product, the major concern should be the number of blades and their designs. Blades may be produced from various materials including alloys, aluminum, steel, PVC, and timber. The blade number is normally low ranging between two and six in comparison to ducted fans which have a higher number. The low number of blades is designed to stop them from affecting the high flow rate at which they work.
Blades come in different lengths and shapes. Some incorporate different blade sections along their radius. Rotor geometry and velocity triangles are not required here because the number of blades is low. These products are meant for use in regions that experience high temperatures, normally within the range of 70 degrees. They are also capable of working in humid environments if they are installed with the right type of bearings. Cheaper makes have sleeve bearings which do not last long.
These gadgets find use in many industries including chemical, woodworking, ceramic, steel, cement, and mining. Common industrial applications are building ventilation, dust removal and collection, combustion air, fume removal, and heat recovery. Propellers also find application in cooling towers, ships, helicopters, wind tunnels, hydrofoils, and hovercrafts. When they are applied for propulsion, the efficiency is the major parameter considered. Flow rate, efficiency, power consumption, and pressure rise are however all of importance if the device is used as a fan.
These devices are also widely used inside computers as cooling elements. They incorporate fluid or ball bearings to ensure consistency in operation and maximum life when they are used for cooling in computers. Models installed in computers devices are costly but function and consume power efficiently. Normally shafts are installed to be in line with the part that needs to be cooled. The device blows air towards the part or draws air past it.
Important characteristic considered during manufacture of these commodities is the relationship between the volume flow rate and pressure variation. Efficiency increases as the flow rate increases from zero up to a certain point and then starts decreasing. The pressure and power outputs also vary with increased performance.
These devices come in difference sizes and shapes. They are also customized according to the function for which they are meant. The costs differ with power dissipation, size, quality, and material used for construction among other factors.
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