Tag: Air Wipe

EXAIR Products Entrain FREE Ambient Air For Maximum Force and Flow

Published on by Tyler DanielLeave a comment

Air entrainment is a term that we bring up quite often here at EXAIR. It’s this concept that allows many of our products to dramatically reduce compressed air consumption. The energy costs associated with producing compressed air make it an expensive utility for manufacturers. Utilizing engineered compressed air products that will entrain ambient air from the environment allow you to reduce the compressed air consumption without sacrificing force or flow.

Products such as the Super Air Knife, Super Air Nozzle, Air Amplifier, and Super Air Wipe all take advantage of “free” air that is entrained into the primary supplied airstream. This air entrainment occurs due to what is known as the Coanda effect. Named after renowned Romanian physicist, Henri Coanda, the Coanda effect is used in the design of airplane wings to produce lift. As air comes across the convex surface on the top, it slows down creating a higher pressure on the underside of the wing. This creates lift and is what allows an airplane to fly.

EXAIR Super Air Nozzle entrainment

This is also the same principle which is allowing us to entrain ambient air. As the compressed air is ejected through a small orifice, a low-pressure area is created that draws in additional air. Our products are engineered to maximize this entrained air, creating greater force and flow without additional compressed air. Super Air Amplifiers and Super Air Nozzles are capable of up to a 25:1 air entrainment ratio, with just 1 part being the supplied air and up to 25 times entrained air for free!! The greatest air entrainment is achieved with the Super Air Knife at an incredible ratio of 40:1!

This air entrainment principle allows you to utilize any of these products efficiently for a wide variety of cooling, drying, cleaning, or general blowoff applications. In addition to reducing your compressed air consumption, replacing inefficient devices with engineered products will also dramatically lower your sound level in the plant. Sound level in some applications can even be reduced down to a point that would eliminate the need for hearing protection with the OSHA maximum allowable exposure limits set at 90 dBA for an 8-hour shift.

If you have inefficient blowoff devices in your facility, give us a call. An Application Engineer will be happy to help you select a product that will “quietly” reduce your compressed air consumption!

Tyler Daniel, CCASS


Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

Get your EXAIR Catalog

Published on by Jordan T ShouseLeave a comment

I consider myself a bit Old Fashion when it comes to product catalogs! (As I sit here and look at my 3,968 page McMaster-Carr Catalog!) There’s something nice about having everything you need right in front of you. Yes I know everything is on our website also, and its a pretty slick website if I do say so myself! Check out this blog about our new and improved website! Website Blog But there is something about a paper catalog you can flip thru and see all the options!

EXAIR’s Catalog 33 is 224 pages, and covers all 16 product lines from Air Knives to Cabinet Cooler systems, to industrial vacuums. All of our cataloged products are in stock and ready to ship! Not only will you be able to find part numbers, Dimensions, Product specifications and performance. You will also find application photos to help you use the products the best way!

To get your hands on one you can either shoot a email to techelp@exair.com, or jump over to our website and provide your information and one will be shipped out! Order A Catalog Here

Jordan Shouse
Application Engineer

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What’s So Super About EXAIR’s Super Air Wipe?

Published on by Russ BowmanLeave a comment

When you’re blowing something off with compressed air, one of the first things you want to consider is the size, and shape, of the air flow that’s going to be needed to get the job done. If you’re blowing off individual small parts, we’ve got a variety of Super Air Nozzles that will do the job quietly and efficiently. If it’s a flat plate, sheet, or film, the laminar flow from a Super Air Knife is particularly conducive to creating a stripping/sweeping flow of air, ideal from blowing moisture or debris from flat surfaces.

Let’s say you need to blow off an object from all sides…like a length of hose, tube or pipe, or even an extruded shape. You could position an array of Air Nozzles, Air Knives, or Air Amplifiers around it (there ARE times when that makes sense, but that’s a subject for another day)…or, you could pass it through an Air Wipe.

EXAIR Air Wipe products come in a range of sizes – 3/8″ to 11″ – all of which have a split design, which unlatches easily to eliminate the hassle of having to thread the product through them. Air Wipes up to the 4″ size come with a hose assembly that connects the two halves, so you just need to run one air line to them. If you want to make gross adjustments to the flow & force generated, we offer additional shims, which are easily installed to put the Air Wipe into a whole new range of performance.

These also come in two types: Super, and Standard, Air Wipes. Size for size, performance & dimensions are identical. The difference is all about the materials of construction and temperature ratings. Which one we specify will largely come down to the nature of the environment in which they’ll be installed. In the absence of high heat, or corrosive elements in the environment, the Standard Air Wipe is my recommendation all day, every day. If you need something that’ll stand up to a bit more aggressive conditions, the Super Air Wipes are certainly worth a look.

Additionally, the Super Air Wipes can be fitted with emitter points for static elimination…we call those Super Ion Air Wipes, and they come in 2″ and 4″ sizes.

360° blow off AND fast, efficient static dissipation: EXAIR Super Ion Air Wipe.

EXAIR Intelligent Compressed Air Products are the best choice for quiet, safe, and efficient use of your compressed air. If you’ve got a blow off application you’d like to discuss, give me a call.

Russ Bowman, CCASS

Application Engineer
EXAIR Corporation
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What Is A Coanda Profile?

Published on by Russ BowmanLeave a comment

The big thing that sets engineered products like EXAIR Intelligent Compressed Air Products apart from other devices is the engineering that goes into their design.  Several principles of fluidics are key to those designs:

The one I wanted to discuss today, though, is the Coanda Effect, what it means for our engineered compressed air products, and what they can do for you:

The Coanda effect is named after Henri Coandă, who was the first to use the phenomenon in a practical application…in his case, aircraft design.  He described it as “the tendency of a jet of fluid emerging from an orifice to follow an adjacent flat or curved surface and to entrain fluid from the surroundings so that a region of lower pressure develops.”  Put simply, if fluid flows past a solid object, it keeps flowing along that surface (even through curves or bends) and pulls surrounding fluid into its flow.  Here’s a demonstration, using an EXAIR Super Air Amplifier and a plastic ball:

What’s interesting here is that the Super Air Amplifier is not only DEMONSTRATING the Coanda effect, it’s also USING it:

Air Amplifiers use the Coanda Effect to generate high flow with low consumption.

EXAIR Standard and Full Flow Air Knives also have Coanda profiles that the primary (compressed air) flow follows, and uses, to entrain “free” air from the surrounding environment:

Compressed air flows through the inlet (1) to the Standard Air Knife, into the internal plenum. It then discharges through a thin gap (2), adhering to the Coanda profile (3) which directs it down the face of the Air Knife. The precision engineered & finished surfaces optimize entrainment of air (4) from the surrounding environment.

EXAIR Air Wipes can be thought of as “circular Air Knives” – instead of a Coanda profile along the length of an Air Knife, an Air Wipe’s Coanda profile is on the ring of the Air Wipe, which entrains surrounding air into a 360° ring of converging air flow:

Air Wipe – How it works

So that’s the science incorporated in the design of our products.  But what does it mean to the user?

  • Efficiency.  Pulling in a tremendous amount of “free” air from the surrounding environment means minimal consumption of compressed air, while still getting a hard hitting, high velocity air flow.
  • Sound reduction.  This air entrainment also creates a boundary layer in the air flow, resulting in a much quieter air flow than you get from a simple open-end blow off.

EXAIR Corporation is committed to helping you get the most out of your compressed air system, and thanks to Mr. Coandă, that includes reducing your compressed air consumption and noise levels.  If you’d like to find out more, give me a call.

Russ Bowman, CCASS

 

 

 

Application Engineer
EXAIR Corporation
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