Understanding Air Entrainment or Amplification Ratios and Air Knives

Super Air Knife has 40:1 Amplification Ratio, entrainment is illustrated as the curved blue arrows.

EXAIR’s Super Air Knife is the top performer among our engineered air knives and it dramatically reduces compressed air usage and noise when compared to other blow-off systems. The Super Air Knife delivers a uniform sheet of laminar airflow across the entire length of the air knife. Even at high pressure of 80 PSIG (5.5 BAR), the sound level is surprisingly quiet at 69 dBA for most applications.

One feature of the Super Air Knife is its Amplification Ratio, or the ratio of ambient air to compressed air within the forceful blast of air from the Super Air Knife. The design of the Super Air Knife entrains ambient air at an amplification ratio of 40:1 (ambient air to compressed air). Entrainment is defined in the simplest of terms as: to draw in and transport (something, such as solid particles or gas) by the flow of a fluid. The Super Air Knife design produces two low pressure areas where surrounding air is pulled into the primary compressed air stream and is delivered to your target. EXAIR’s Intelligent Compressed Air® products use the principle of entrainment to give you more air volume than just the compressed air being introduced from your air compressor.  This will maximize the force value for your application with the minimum amount of compressed air. Any pipe, manifold, or fitting can be modified to blow compressed air, however, these homemade blow offs will be very noisy and perform poorly when it comes to air entrainment, or amplification ratios. In contrast EXAIR’s intelligent compressed air solutions are engineered to be very quiet and use conservative amount’s of compressed air while maximizing the output volume through entrainment. 

Furthermore, the table below demonstrates the differences between blow-off systems and the efficiency of EXAIR’s Super Air Knife. You can see that the Super Air Knife outperforms all or most other options when comparing purchase price, sound level, maintenance, horsepower required and electrical costs.

The use of EXAIR’s Super Air knife not only save air consumption but you can notice the lower decibel rating which meets or exceeds OSHA Standard 29 CFR-1910.95(a) for maximum allowable noise exposure. If you have questions or need help with EXAIR’s Super Air Knife or any of our Intelligent Compressed Air Products please contact us and let us help you.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@exair.com
Twitter: Twitter: @EXAIR_EK

Check Out EXAIR’s Knowledge Base for All Your Compressed Air Needs

At EXAIR, we want to ensure our customers have access to as much technical data and information as possible. This helps to assist in identifying solutions to common industrial problems and provide you with the resources necessary to make an informed purchase. A big part of that effort is displayed here on the EXAIR Blog. But, did you know that our website is home to a wealth of information ranging from Case Studies, Videos, Webinars, Installation Guides, Catalog Sections, CAD Models and much, much more?

Once you’ve registered for an account on the website, you’re able to access all of the content housed in our Knowledge Base, including 3D models and CAD drawings, case studies, application examples, webinars, and .pdf file downloads of installation and maintenance guides or catalog sections. Have a question on a particular product? Check out the FAQ section, created by our Application Engineers, the FAQ section contains a variety of commonly asked questions from customers.

Misplaced your installation sheet? No problem! All installation and maintenance guides, in addition to product catalog sections, can be found in .pdf format for download under “PDF Library”.

With 15 different product lines, EXAIR has products capable of addressing a wide range of industrial process issues. Not sure where in your facility you may have an opportunity to improve? EXAIR’s Application Search Library allows you to narrow down your search. Categorized both by specific process or by industry, we’ve highlighted a variety of different specific applications that our products can serve.

EXAIR hosts a yearly Free Webinar covering a variety of topics related to industry and compressed air. After the webinar has been sent out to all registrants, we include a recorded video of the webinar as well.

It doesn’t just stop there. The Knowledge Base also contains calculators and general compressed air related data in addition to PowerPoint presentations for each product line. Click here to register for the website and begin accessing all of this valuable content!

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

Optimizing Your Compressed Air System: Find and Fix Leaks

Looking to “go green?” We can help.

There are six steps in optimizing your compressed air system. This entry will focus on Step 2 “Find and Fix leaks in your compressed air system”. Each of the six steps make an impact toward optimizing your compressed air system but finding and repairing your leaks will save you hundreds if not thousands of dollars every year. Major leaks can be felt or heard as you walk around and are somewhat easy to identify. The smaller leaks, which can not be heard or felt, can be found using EXAIR’s Ultrasonic Leak Detector (ULD).

Model 9061

EXAIR Model 9061 will help you find all the smaller leaks that go unnoticed yet add up to become a significant portion of air loss within any air savings program. This Ultrasonic Leak Detector (ULD) is a hand held, high quality instrument that can locate costly leaks in your compressed air system. The person using the ULD need only aim it in the direction of a suspected leak. When a leak is present, an audible tone can be heard with the use of headphones, and the LED display will light. Testing the various unions, pipes, valves and fittings of a complete installation can be done quickly and effectively at distances up 20 feet ( 6.1 m) from a leak.

Compressed air systems that are not maintained can easily waste up to 30% of the compressor output through leaks that go undetected. Compressing air is an expensive operation. Saving the wasted compressed air reduces overall operating costs. Smaller insignificant air leaks may not be a problem but when you add up and repair the multiple smaller leaks it will lead to significant annual savings.

If you have a compressed air system and want to find and repair your leaks EXAIR Model 9061 is a must have for finding all your leaks. If you have questions or need help please contact any one of our Application Engineers for assistance.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@EXAIR.com
Twitter: @EXAIR_EK

Looking for a Reliable Compressed Air Products Supplier?

It starts with EXAIR’s Application Engineers, gains momentum with our Customer Service Team and finishes with our high quality products that ship same day. EXAIR’s Application Engineers are the most experienced and accredited in this industry. We are the product experts across all of our 15 product lines. I have been with EXAIR going on 2 years now but have many years of experience in other industries and manufacturing processes prior to being with EXAIR. I have held positions in cost estimating, sales engineering, project engineering, purchasing, program engineering and management/manufacturing positions. I love the challenges that customers bring our way and the satisfaction that comes with providing them solutions to their process and efficiency problems while improving safety in many cases.

To be a successful application engineer at EXAIR you need to be a great communicator and listen intently to every customer. You must have a solid understanding of the customer needs and how EXAIR products can fit into their process. Having experience in injection molding, metal stampings, custom fabricating, metallurgy, castings, welding, assembly and paint lines certainly brings the knowledge to helping a customer choose the right product. The biggest challenge I had is learning all the products and performance values for each product at EXAIR. This is an ongoing process as we also customize products and add new products regularly.

I enjoy talking to each customer as no conversation is the same. We serve just about every industry and support customers around the world. Having a diverse background helps me to understand the many processes that each of our products can assist in cleaning, coating, drying, ventilating, transport, cool, etc… and gives me a great deal of satisfaction when a customer makes the purchase and has a successful experience. I hope to have a conversation with you for your next project and to help identify one of EXAIR’s products. If you have any questions or projects please contact me or any of the many Application Engineers at 800.903.9247 or by visiting us at http://www.EXAIR.com. Any of us will be sure to provide the best experience possible.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@exair.com
Twitter: Twitter: @EXAIR_EK