Thank you for purchasing an EXAIR Super Air Amplifier. In this video I am going to cover some of the important first steps in setting up and operating a Super Air Amplifier.
If you have any questions, or need any application assistance, feel free to give us a call!
Al Wooffitt
Application Engineer
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Daniel Bernoulli was born on February 8, 1700, in Groningen in the Netherlands. He is the son of Mathematician Johann Bernoulli, who was an early developer of Calculus. Daniel took an interest in mathematics when he was just 7 years old. Although his father tried to dissuade him from focusing on mathematics due to the limited financial gain, Johann did tutor his son in calculus and theories of kinetic energy.
Daniel continued to show promise, attending Basel University at the age of 13, where he studied logic and philosophy. By the time he was 15 years old, he had completed his bachelor’s degree, and earned his master’s degree a year later. At the age of 23, he moved to Venice, Italy to learn medicine, but he couldn’t get away from mathematics, becoming a professor of a university in Venice a year later.
In 1738, Bernoulli published the book Hydrodynamica, where he first explained what we know as Bernoulli’s Principle. This is of particular interest to us at EXAIR, as many of our products operate off of this principle. It states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure. This is derived from the conservation of energy, where an increase in kinetic energy (speed) requires a corresponding reduction in potential energy (pressure).
When compressed air exits the precise slotted nozzle of our Super Air Knife, this induces a low pressure area, which speeds up and draws in ambient air. This air entrainment (at a ratio of 40:1) is what makes our Super Air Knives so efficient. This same effect can be witnessed with our Super Air Amplifiers, Super Air Nozzles, Super Air Wipes, as well as many other products.
If you would like to discuss your application, and how the Bernoulli Principle may be beneficial, feel free to give us a call!
Al Wooffitt
Application Engineer
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Once again, quoting and connecting to iconic pop culture movies from my younger years gets the best of me. If you have seen Spinal Tap, make sure you follow me on X, so we can connect and be friends. I’m sure you’ll like my posts just as much as my blogs. Well, the truth is, our amplifiers don’t go to eleven, they actually come in various sizes, and they aren’t made to just generate sound.
They are actually designed to take a small amount of compressed air and then entrain a large volume of free ambient air, combine them and force them out of the discharge side. They can be used to amplify the volume of air used to blowoff, cool or evacuate from an area. Tyler does a great job of showcasing just how fast they can cool a part when compared to a commercially available fan.
There is another type of “amplifier” in the compressed air field as well, the pressure booster is out there as well and we will sometimes get inquiries about this type of device. The trick is, these will increase your operating pressure. However, they cannot increase the volumetric flow of the compressed air.
The type of amplification they do is through orifice, valve, and even pistons to increase the the actual pressure of the system. The way our Air Amplifiers work is shown below. By using a patented shim on the Super Air Amplifiers and an engineered profile on both the Super and Adjustable Air Amplifiers we optimize the volume of air entrained on the low pressure side while maintaining a nominal size on the low pressure and the discharge side so ducting or tubing can be connected. The trick is that if you place your hand over the suction side or the positive displacement side it will actually just backfeed through the body. The units all meet or exceed the OSHA directive for dead end pressure because it can simply feed out the other side.
If you would like to discuss Air Amplifiers and where they may be able to help you reduce compressed air Consumptions or increase performance of an application, please contact an Application Engineer today.
Brian Farno, MBA – CCASS Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF
1 – These go to 11.mpg – pmw8000 – Retrieved from, https://www.youtube.com/watch?v=KOO5S4vxi0o – published on 11/11/2011.
EXAIR Air Amplifiers come in two designs:
Strictly considering air flow performance, there aren’t really any applications where one design will work, and the other won’t. Once the right size is determined, selection comes down to material of construction, how it’ll be installed, where it’ll be installed, and whether it’ll need to be quickly adjusted for flow & force on the device, instead of by regulating the compressed air supply.
I had the pleasure of talking to a caller just this morning about a “textbook” application for an Air Amplifier: welding smoke ventilation.
The caller had an existing 4″ ID hose to place at the point of suction and connect to the Air Amplifier. This narrowed the choices down to the two Air Amplifier products with a 4″ outside diameter on the inlet: Model 120024 4″ Super Air Amplifier, and Model 6043 (or 6033) 3″ Aluminum (or Stainless Steel) Adjustable Air Amplifier. It was to be used in a typical shop environment, so the higher temperature rating (400F or 204C) or superior corrosion resistance of the Stainless Steel construction wasn’t needed. They intended to support it with the suction hose, hose-clamped onto the Air Amplifier itself, so the Super Air Amplifier’s 2-bolt mounting flange wasn’t necessary…in fact, they thought it might even get in the way. So, the Model 6043 3″ Aluminum Adjustable Air Amplifier made it to the top of the list pretty quickly.
Another important consideration for the caller was maximizing the exhaust flow. Looking at the performance data for the 4″ Super Air Amplifier and the 3″ Adjustable Air Amplifier, the latter generates just a little higher total air volume at the outlet, which, when you subtract the compressed air consumption from it, gives you the total flow rate of entrained air (and welding smoke, in this case):
In addition to ventilation/exhaust applications, Air Amplifiers can be used – just like our engineered Air Knives and Air Nozzles – in blow off, drying, cleaning, and cooling applications. If you’ve got questions about them (or any EXAIR Intelligent Compressed Air Products), give me a call.
Russ Bowman, CCASS
Application Engineer
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