## BELIEVE

Okay, in case you haven’t been around the past year or two, and you have no clue where that simple word/statement comes from, then let me be the first to tell you that Ted Lasso is a great show, and you should check it out. So what does that have to do with EXAIR? Well, I like to think that sometimes the Application Engineers here are a lot like the coaching staff on the show. Sometimes we are strategic, we want to assert our experience and knowledge, and others, we are like Ted where we just ensure the thoughts and ideas you have already had.

That’s the fun part of being an Application Engineer here at EXAIR. I get to speak, chat, or email with both existing customers and potential new customers, resellers, and even catalog houses who all are trying to do one thing, improve a process or help someone out. Recently I was working with a manufacturing company trying to determine how fast they can cool a slab of steel with a Super Air Knife. Now, I by no means have a background in thermo like Russ Bowman, but he was busy preparing for our Spring Webinar to share some knowledge on Compressed Air System Storage. (If you haven’t checked a webinar out, most are available on our website in our knowledge base. ) So, I took the time to try and remember some of the tools I learned while at the University of Cincinnati. Thermodynamics was by far one of the hardest classes for me, The Algebra was always easy, I just always looked at the problems sideways I guess, and worried about too many variables. The truth of it is, if you keep it simple you can generally get somewhere close. so I took that approach. First I looked at what heat load would be generated by the steel slab.

I looked at the basic Heat Transfer equation – Q=c x m x ΔT where:

Q = Heat
c = specific heat capacity
m = mass
ΔT = Change in temperature

I was able to locate the mass of the carbon steel plate with 1/2″ thickness. So I calculated the mass of the sheet. Then looked up the specific heat of the same plate, and took the change in temperature from what the customer stated the plate started at and finished at.

This resulted in a heat load. Then to calculate how much cooling a Super Air Knife could provide I utilized another calculation that gives the BTU constant of a cubic foot of air moving and I did decrease the efficiency of the knife due to some assumptions on space and temperature constraints. The resulting factor was the customer would need 6 Super Air Knives to blow the sheet down as it travels 5 feet per minute on a 60′ long conveyor.

This again had several assumptions and I made that very clear to the customer. To convert the amount of air a Super Air Knife puts out and how much cooling it can use, I did make some clear assumptions on the temperature of their atmosphere and the amount of entrainment then I used a calculation that we adapt for Vortex Tubes and Cabinet coolers to determine what cooling load will be achieved if the air pressure or temperature is less than optimal on one of those products.

In the end, the customer received an educated estimation or calculated answer with listed assumptions, to solve their issue with cooling a steel slab before it is stacked together. I really only used two calculations and manipulated some variables to try and make sense of what I knew and what the customer needed. The best part is, this whole process is backed by our 30-day guarantee on stock products which our 48″ Super Air Knife is. So this customer can take my basic math, use my suggestions, place an order, and test it out in their facility for a factual performance test to then proceed with a permanent solution.

If you would like to discuss any point of use or potential application for compressed air in your facility, please contact an Application Engineer today!

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

## EXAIR Products Entrain FREE Ambient Air For Maximum Force and Flow

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.

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

## Application Database: Super Ion Air Knife Provides Multiple Benefits For Hand Cleaner Producer

When plain old soap & water just don’t do the trick, there are a number of hand cleaners available on the market to remove even the most stubborn dirt & grime. Some are lotion-like, and leave your skin moisturized. Others have abrasive grit, and don’t. They come in all sorts of containers, too, from small jars that you dip a portion from, to large jugs with pump dispensers. The latter is oftentimes found in industrial repair shops…and they’re made on the production line of a company who needed our help getting rid of static charge.

After the extrusion process, these jugs are conveyed through a series of prep stations before they’re labeled & filled. The static charge generated along the way was causing issues with labeling: it made them skew one way or the other, or wrinkle up at certain points, instead of being applied straight & smooth on the side of the jug.

Now, all it takes to generate a static charge is contact and separation of non-conductive surfaces. Every time a roller sent a jug moving on the conveyor, or a bumper changed its direction, the static charge built up. In most applications, the best place to remove static charge is right before it becomes a problem. There was a tunnel immediately prior to the labeling station that was an ideal location to install a Static Eliminator…so they did.

The tunnel was 29″ wide inside, so this was a great fit for a Model 112224 24″ Gen4 Super Ion Air Knife Kit. Blowing ionized air across the jugs as they moved through the tunnel eliminated the static charge, and their label problems.

They also noted an additional benefit: this wasn’t a huge problem, but occasionally, a jug would have some plastic chips or shavings clinging to it. Those would get rejected during quality inspection…they’d have to remove those labels and put them back in the line. Again, it wasn’t a huge problem, and was within their quality tolerances…but they went to ZERO after they started using the Super Ion Air Knife.

If you’ve got a problem with static charge, EXAIR has a variety of solutions that’ll take of them, and perhaps even others. Through the end of February 2023, we’ll even give you a free AC Sensor with any qualifying Static Eliminator Product purchase. Give me a call if you’d like to find out more.

Russ Bowman, CCASS

Application Engineer
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## Compressed Air Usage in Food & Beverage Industry: Bottle Blowoff with Super Air Knives

When it comes to the usage of compressed air in the food & beverage industry, applications for EXAIR products are abundant. The range of sizes (3″ through 108″) and materials (aluminum, 303SS, 316SS, and PVDF) allow us to handle corrosive, high temperature and chemical environments.

One common process that we’re able to help improve is on bottling or canning lines for a wide variety of different companies in the beverage industry. These processes generally run at a very high speed and need a way to complete the process with as little manual intervention as possible.

I recently helped a customer that was looking for a better solution for their bottle processing line. The company produces bottled water in South America and was dealing with a series of quality issues. After the bottles are filled and sealed, they go through a washing operation to remove any contaminants from the outside of the bottle. Afterwards, they make their way along a conveyor where a label is applied around the outside of the bottle. The bottles aren’t always completely dry by the time they get to the labeling step. Any residual moisture on the outside of the bottle can present a problem where the label doesn’t fully adhere to the bottle.

After complaints from their customer about product being received with labels that were peeling off, they implemented a quality check to ensure that the bottles that weren’t properly labeled were fixed before they were shipped out. While this resolved the problem for their customer, it required an extra step. Not only does this add an entire step to the process, but it requires several additional operators to perform the manual task of removing and replacing faulty labels.

After searching and discovering EXAIR’s Super Air Knife they reached out for assistance. Due to the variability of the bottle sizes, they needed a solution that was easily adjusted based on what product was being run that day. Fortunately, EXAIR offers a Universal Mounting System for our Super Air Knives that’ll allow them to easily position their blowoff as they need.

The solution was to install (2) 110036 36” Super Air Knives with (2) Universal Mounting Systems for each. Any knife 24”-54” will necessitate (2) Universal Mounting Systems, 55”-71” will require (3), 72”-95”, and 96” and over will require (5) to sufficiently support the weight of the knife.

The knives provided a strong blast of air that was able to remove any residual moisture from the exterior of the bottles. This eliminated the need to have a post labeling inspection and the bottles were labeled properly on the first go! Adjustments in between different bottle sizes were made simple with the help of the Universal Mounting System.

At EXAIR, we’re all about providing safe, efficient, and reliable solutions to a host of industry related problems. With same day shipment for stock items with an order received by 2:00 ET and a team of highly trained Application Engineers, we’re ready to take your call and get a solution out to you today. Don’t just take my word for it, find out for yourself!

Tyler Daniel, CCASS

Application Engineer
E-mail: TylerDaniel@EXAIR.com