Professor Penurious Rides Away

They say all good things must come to an end, and in this case, questionable things must come to an end.  Please join us in wishing Professor Penurious (Dan Preston) well as he starts the next chapter of his life story. Dan has been with EXAIR for 10 years and has managed our engineering department for just as long. Beyond the innumerable tasks required of him through engineering, he readily provides our whole workplace support, insight, integrity, work ethic and humor – just to name a few. We will miss him and his willingness to provide the part of Professor Penurious.

CLICK HERE and watch no fewer than 17 other Professor videos for your entertainment!

Russ Bowman
Application Engineer
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Post-Harvest Vegetable Washing Application

I remember a conversation I had with Neal Raker a few years ago about post-harvest fruit processing.  We were discussing the merits of a Super Air Knife in such an application, and how far away from the fruit we could realistically mount the Air Knife while still achieving sufficient results.

Ultimately, the answer was dependent on the line speed of the fruit, the shape, and the quantity/depth of the fruit on the conveyor.  Recently, I had an end user with a similar need.  However, instead of drying fruit, this customer needed to dry vegetables.

Vegetable drying

Vegetable rinsing conveyor in need of Super Air Knife

The vegetables are placed at the far end of the conveyor shown above.  They quickly pass through a rinse to remove any dirt or contaminants on the vegetables, and proceed to the close end of the conveyor.  After the vegetables leave the rinsing area, and before they reach the end of the conveyor, they need to be blown off.

This need is what prompted the end user to contact EXAIR.  We discussed the application details and opted for a 42″ 316 Stainless Steel Super Air Knife, installed with a 45 degree angle of attack.  This setup will provide the best possible blow off and water removal for this application, will take up minimal space in the surrounding area, and will provide an OSHA compliant solution

If you have an application in need of an EXAIR product, or would like to discuss your application with an EXAIR Application Engineer, give us a call.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

Non-Hazardous Purge Cabinet Cooler

A company that manufacturers metal sheeting opted to do a program in preventative maintenance.  They looked at the potential problems that could occur within their process.  One potential problem was the over-temp fault with their VFDs, Variable Frequency Drives.   VFDs control the speed of the motors that run the production line.  With the summer months approaching, the ambient temperatures would rise increasing the temperatures inside their cabinets.  In this industry, production is very extensive, and they wanted to prevent the fault from occurring on the VFDs.

They contacted me because they were interested in EXAIR Cabinet Cooler Systems. I asked the general questions to correctly size the Cabinet Cooler; the dimensions, maximum ambient temperature, current ambient temperature, and current internal temperature within the cabinet.  When they went to check the temperature inside the cabinet, they noticed that the electrical components were dirty and dusty.  This raised a flag in determining the correct type of Cabinet Cooler.  Being the plant had a dirty environment, the dust particles were able to get into every little crevice and spot.  Another issue was created with the efficiency and effectiveness of the filthy electrical components.

Dusty Electronics

Dusty Electronics

An option for the EXAIR Cabinet Coolers is the Non-Hazardous Purge (NHP).  This product is designed to continuously bleed about 1 SCFM (28 SLPM) of compressed air into the cabinet.  This will cause a slight positive pressure to keep any dust particles from migrating into the electrical cabinet.  From the heat load calculation, the NHP4340 was the correct EXAIR Cabinet Cooler selected.  This would accomplish two things:  keep the electrical components cool during heavy operations and keep the electrical components dust free.   With this complete system which included the thermostat control and the NHP solenoid valve, the company was able to save compressed air during the cooler months and keep the dust off the electrical components.  Now that I shared the preventative maintenance program from this company, you can use it to your advantage to keep your electrical components cool and clean.  If you have any questions, you can always contact the Application Engineers.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

 

Creative common license type by Dennis van Zuijlekom.

Independence Day

I think the Fourth of July might be my favorite summer holiday. Warm weather, picnics, family, friends, fireworks…and a day off to enjoy it all to its fullest! It’s also the second summer holiday in fairly rapid succession; coming just a few weeks after Memorial Day. I’ve written before (twice, actually) about the differences in what we’re observing on these two holidays, but I’m still keenly aware of their importance to our American heritage: Memorial Day, as a time to remember those who made the ultimate sacrifice for our country and our freedoms. And Independence Day, as, what John Adams called, “the great anniversary festival:”

“I am apt to believe that it will be celebrated by succeeding generations as the great anniversary festival…to be solemnized with pomp and parade, with shows, games, sports, guns, bells, bonfires, and illuminations, from one end of this continent to the other, from this time forward forever more.”
-John Adams, in a letter to his wife, upon signing the Declaration of Independence.

Since Independence Day falls on a Saturday this year, the management at EXAIR have graciously given us the day off on July 3rd in observance of the holiday. My neighborhood is decorated, as usual, with American flags up and down every street. I’m doubly blessed that where I get to spend my weekdays, and where I get to spend my weeknights & weekends, are both in tune with celebrating what I like to call the American Dream.

My fellow veterans at EXAIR on the left; my neighborhood on the right.  Great places to spend time.

My fellow veterans at EXAIR on the left; my neighborhood on the right. Great places to spend time.

For all of you in the United States, happy birthday to US, and all my best wishes for a wonderful weekend to everyone.

Russ Bowman
Application Engineer
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Stay Cool

When you walk outside, do you feel like life itself is being pulled right from you due to the heat and humidity? Normal chores become increasingly difficult to perform as you feel the need to take frequent breaks to try and recover? Sometimes it just becomes too much to handle and you finally give in and succumb to the conditions. Needing some type of relief, you run back into the air conditioning or sit in front of a fan to cool off.

IMG_0009

“It’s so hot you could literally fry an egg”

While the higher temps can cause nuisances at home, they can be extremely problematic when dealing with the sensitive electrical components in your control panel. Already under a high demand to keep your facility operational, when you add in the extra heat and humidity, you have a recipe for failure. Luckily, EXAIR has you covered with our Cabinet Cooler Systems.

Our Cabinet Cooler incorporates a Vortex Tube that creates 2 air streams form the compressed air supply – 1 cold airstream and 1 hot airstream. The unit is designed to mount on the top of a sealed enclosure with the created hot airstream is exhausting external to the cabinet while the cold air is exhausted into the cabinet at a slight positive pressure. As a result, the hot, dirty air rises and is purged from the cabinet so only the cold, clean air is left circulating inside.  Humidity is kept to a minimum as the external air is unable to re-enter the enclosure.

CC how it works

Low cost, simple way to keep electrical components cool.

We offer systems for NEMA 12, NEMA 4 or NEMA 4X ratings, ranging from 275 Btu/hr. up to our largest dual system providing 5,600 Btu/hr. of cooling capacity. Additionally we offer special High Temperature Systems suitable up to 200°F, our Non-Hazardous Purge option supplying a constant 1 SCFM of air and our Special 316ss units.

Selecting the right model is simplified by using our Cabinet Cooler Sizing Guide. This provides us all of the pertinent details to accurately calculate your current heat load and make our recommendation. Of course, you can always call one of our application engineers for assistance too.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN

 

IT IS SO HOT image courtesy of Kate Ter Haar via Creative Commons License

 

Custom Air Knives, Custom Vortex Tubes, Custom Line Vacs. What About Custom Air Nozzles?

At EXAIR we are far from shy that we offer custom solutions.   As a matter of fact, almost every catalog section has a handful of pictures that are special or custom units that we have made for our customers over the years.   We continue to add special items to our database regularly.   This could be anything from a special length Super Air Knife, a Vortex Tube with a special fitting or temperature setting, sanitary flanges on a Line Vac, or even most recently, a special 2″ Flat Super Air Nozzle.

Special 2" Flat Stainless Steel Super Air Nozzle - Safety Wired Hardware

Special 2″ Flat Stainless Steel Super Air Nozzle – Safety Wired Hardware

Special 2" Flat Stainless Steel Super Air Nozzle w/ Safety Wired Hardware

A closer look at the Safety Wire that holds the bolts from backing out.

This Special 2″ Flat Super Air Nozzle came from the customers requirement to use a mechanical fastener in order to ensure all hardware will not back out or come loose.  The 2″ Flat Super Air Nozzle is already held together by two button head cap screws that are thread locked into place in order to prevent them from loosening.  This customers requirement was not met by our standard procedures, so we stepped outside of the box yet again and have offered them a special 2″ Flat Super Air Nozzle with bolts that are held tight by safety wire.

Safety wire is a very popular practice in Aerospace, motorcycle racing, and even some packaging processes.   The Stainless Steel wire is twisted and wrapped around the bolt heads in a manner that will not permit either bolt from loosening and falling out.   However, it can be removed, the nozzle can then be cleaned, and the safety wire can then be replaced for preventative maintenance needs.

If you are in the need for something that you don’t directly see in our product offering, or maybe you simply need something like a bolt style changed.   Contact us and see what we can do for you.   Chances are, we will meet your needs with ease and even be in a timely fashion.

Brian Farno
Application Engineer Manager
BrianFarno@EXAIR.com
@EXAIR_BF

Greeting Cards saved by 1″ Flat Super Air Nozzle

A greeting card manufacturer used a liquid coolant plastic nozzle to provide an air assist to divert greeting cards to an auxiliary straight conveyor. Without the air assist the cards would bounce and fly from the conveyor leading to a loss of products and more maintenance.  They used what they had on hand which was a coolant nozzle pictured below.

Coolant Type Nozzle

Liquid Coolant Nozzle uses 32 SCFM at 40 PSIG and 57 SCFM at 80 PSIG.

This nozzle was run at a fairly low pressure of 10 PSIG, but still used 7.8 SCFM at 10 PSIG.  The nozzle worked well, but if run for 24 hours over 250 working days, it costs $702 to supply air to the nozzle. The customer utilized (40) nozzles in their plant which cost them $28,080.  Also, the nozzles were incredibly noisy, since they were designed for liquid flow.

Our customer decided to upgrade to an engineered air nozzle after some time. They needed to cut their air consumption, but still get the job done.  They tested our 1″ Flat Nozzle, but with the standard 0.015” shim it used 5.7 SCFM of compressed air at 10 PSIG. This would be a savings, but after a quick conversation with our Application Engineers, the customer decided to install a 1″ Flat Super Air Nozzle with only a 0.005″ shim. This nozzle 1126-.005 only used 0.9 SCFM of compressed air at 10 PSIG of inlet pressure.  Replace their 40 liquid coolant nozzle would save them 6.9 SCFM per nozzle. 276 SCFM if all 40 nozzles were replaced. Saving 276 SCFM lowered energy bill for their air compressor by $24,840 anuually. Which would mean the simple ROI for $41, 1″ Flat Super Air Nozzle would be 17 days!

1126-9256wstaysethose

1″ Flat Super Air Nozzle model number 1126-.005 on a Stay Set Hose

Call an Application Engineer today to see how we can help you save thousands of dollars.

Dave Woerner
Application Engineer
@EXAIR_DW
DaveWoerner@EXAIR.com

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