The Difference Between Fans Blowers and Compressors
While equipment such as fans, blowers, and compressors may share similar characteristics, their distinct functions make them suitable for specific applications throughout various industries depending on their classification. Each coming with its own unique subset of types, fans, blowers, and compressors all belong to the turbomachinery family, operating on the fundamental means of mechanical engineering to produce devices which transfer energy between a rotor and a fluid. As turbomachinery is dependent on whether the equipment will extract or add energy, it is imperative that one understands when and where such products are necessary. To better understand how each of these components are applied to contribute a functional purpose, we will be briefly going over fans, blowers, compressors, and where they are typically applied.
Functioning as a tool that serves the purpose of absorbing energy to increase fluid pressure, fans are a subset of hydraulic fluid machinery applied for incompressible fluids. For a diverse range of implementation, fans can be combined with a power source to create components such as fluid couplings and clutches, Voith turbo-transmissions, pump turbines, water turbines, and more.
Blowers
Like fans,
blowers absorb energy to increase fluid pressure; however, they are primarily implemented as devices used to affect the flow of air or gas required for exhausting, aspirating, cooling, ventilating, and conveying functions, among others. Classified into two categories, centrifugal and positive displacement blowers, blowers are most commonly referred to as centrifugal fans when used among various industries. In regard to centrifugal blowers, they typically come in eight different types of wheel assemblies, serving the purpose of drawing air into an inlet located on the blower’s housing, through the wheel, and subsequently discharged from the machine at a 90-degree angle. Such machinery is often constructed from fabricated steel, stainless steel, or cast aluminum. Although similar in operation, pressure blowers are specifically designed to draw or push air at high pressures, and are rated in static pressure water gauge (SPWG) measurements.
Compressors
Though primarily used on gasses such as
air compressors work to increase fluid pressure in various compressible fluids or gasses. Accomplished through the implementation of mechanical means in accordance with the American Society of Mechanical Engineers (ASME), air compressors must operate with the use of pistons at a high pressure to volume ratio located above 1.20, unlike blowers that function at low-pressure ratios. Employed among various applications and industries, compressors are often seen used in medical and dental applications, oil and gas applications, truck and vehicle-mounted compressors, laboratory and specialty gas compression, as well as food and beverage processing applications. This allows compressors to be the optimal devices to power air tools, paint sprayers, abrasive blast equipment, phase shifting for air conditioning and refrigeration, propelling gas through pipelines, and other similar operations.
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jason castle
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Posted on February 3, 2022
aviation