EXAIR Cold Gun, Different Application, Problem Solved!

Recently I was working with a customer on sizing a EXAIR Cabinet Cooler when I found out they would be best suited by another EXAIR product! They wanted to cool some analyzer panel fins (heat sinks) while keeping dust off of them. This application said Cold Gun all the way!

I recommended our Model # 5315 Cold Gun Aircoolant System with two cold outlets. The Cold Gun produces a 50°F temperature drop from compressed air supply temperature and provides 1,000 Btu/hr. of cooling capacity. For example, if your compressed air supply temperature is 70°F you would effectively see 20°F air being discharged from the cold exhaust. The Dual Point Hose Kit splits the cold airflow into 2 separate streams, providing for a wider coverage area.

5315_SCGdual
Model # 5315 Cold Gun System with dual point hose kit

The customer decided to order a single unit and after a week of testing replied back…

“We tried one a week ago with excellent results! We are installing three more today. 

Thank you so much for your help! Our analyzer is running 31°F cooler than it had been with no more overtemp failures!”

It goes without mentioning, but this is the type of positive feedback we are thrilled to hear! It feels incredible when a customer takes time out of their busy schedule to acknowledge how EXAIR products provided the perfect solution for their needs!

BUT the story doesn’t end there… just last week, over 2 months since our last correspondence, the customer sent me another email that read…

“Just a follow up on the effectiveness of the cold air guns. We have not experienced a single failure of our TOC analyzers since the guns were installed two months ago.

The cold air solved the problem of our analyzer overheating — even during the hottest part of the summer.

Thank you for your excellent recommendation!”

I let the customer know how much we appreciated the awesome news and how happy we were to be able to solve their problem. At the end of the day, that’s what we strive for, to provide the best and largest selection of Intelligent Compressed Air Products on the market today.

Jordan Shouse
Application Engineer

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Non Hazardous Purge Cabinet Cooler Systems

Last fall, when our youngest “flew the coop” and moved into a dormitory to begin his college experience, my lovely bride and I also embarked upon an exciting adventure: finding, purchasing, and moving in to our “empty nest” dream house.  While packing up the contents of the house where we had raised a United States Marine AND a hippie college student, I moved my trusty laptop from its perch on a desk in a dark basement corner, where it had resided, in that one spot, for more than a couple years.

As I was looking for its carrying case, I noticed the fan grill was almost completely obscured with more than a couple years’ worth of environmental contamination (or dust).  I vacuumed out the grill, but wondered how much more environmental contamination (dust) had made its way into the deep recesses of the laptop…and more importantly, what might it be doing to the sensitive electronics inside my trusty internet browsing device?

If a computer’s fan in a residential environment can get this dusty, imagine how much worse a control panel on a factory floor can get.

I know I’m not telling you anything you don’t already know, but electronics and dust don’t mix.  We have this conversation a LOT with callers inquiring about our Cabinet Cooler Systems.  The protection they offer against environmental contamination is integral with the protection they offer against heat.  In the panel cooling market, our Cabinet Cooler Systems are unique in that respect: a total protection solution.

When properly installed on a sealed enclosure, the only thing the inside of that enclosure is ever exposed to is cold, clean, moisture free air.  But what if the enclosure can’t be completely sealed?  One option is to use a Continuous Operation Cabinet Cooler System.  It works just as the name implies:  cold air is continuously flowing into the enclosure, creating a constant purge flow…if that cold air is blowing out of any openings in the enclosure, there’s no way for environmental contamination to get in.  Problem solved.

Well…almost.  Something else I’m sure you already know is, compressed air is costly.  Organizations like the Compressed Air & Gas Institute (CAGI) and the Compressed Air Challenge (CAC), who are devoted to optimizing industrial use of compressed air, have lists of “inappropriate uses of compressed air”, and panel cooling is on that list…EXCEPT when they’re thermostatically controlled.  At EXAIR, we couldn’t agree more, and if a caller asks any of us Application Engineers about a Continuous Operation Cabinet Cooler System, they’re inviting us in to a conversation about that.

Sometimes, the initial question is cost…well, we have to pay for the components that make up the Thermostat Controls, so we ask our customers who want those products to as well.   A quick conversation about the operating cost of continuous operation vs thermostat control is usually all that’s required in those cases.

Other times, a panel that can’t be sealed is installed in a particularly dusty or dirty environment, and they want the continuous flow of cold air, as described above, to keep those contaminants out.  A Continuous Operation Cabinet Cooler System will, of course, do that.  But EXAIR wants you to get the most out of your compressed air use, so we developed a “best of both worlds” solution: Non-Hazardous Purge Cabinet Cooler Systems.  Here’s how they work:

  • Based on a few key pieces of data that you can submit in our Cabinet Cooler Systems Sizing Guide, we’ll specify the appropriate Cabinet Cooler System to manage that heat load.
  • The system will be thermostatically controlled: a bimetallic Thermostat, mounted inside the panel, will open and close the Solenoid Valve plumbed in the compressed air supply to operate the Cabinet Cooler as needed to maintain temperature inside the panel.
  • The Solenoid Valve is modified to pass a small amount of air flow (1 SCFM) even when it’s closed.  This saves you from using the full rated air consumption of the Cabinet Cooler when cold air isn’t required, and still maintains enough purge air flow to prevent environmental contaminants from entering a less-than-ideally-sealed enclosure.

Whatever you do, DON’T do THIS to your panel.

The Non-Hazardous Purge option is just one way that EXAIR Corporation can help you address specific environmental challenges that may be presented in electrical and electronic panel cooling applications.  If you’d like to find out more, give me a call.

Russ Bowman, CCASS

Application Engineer
EXAIR Corporation
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Which to Choose: Cabinet Coolers Vs. Coolant Driven A/C Units

From ancient times humans have sought ways to cool themselves down, from the invention of the manual fan in ancient times to the modern A/C systems that are used to cool down entire buildings. Anymore these days there is a cooling system for just about anything; gaming PC’s have there own cooling system, personal fans that mist water for cooling down people, climate-controlled boxes for artifacts in museums, etc. But what about your electrical cabinets in your facility? Electrical cabinets that overheat can cause expensive shut downs and lead to unsafe operations where the doors are left open with fans blowing in. When it comes to electrical cabinets there are two well-known ways that are used to cool down electrical cabinets which are fans and A/C units. But there is a third option you can go with which is EXAIR’s Cabinet Coolers.

EXAIR’s High Temp Cabinet Coolers

Cabinet Coolers are compressed air powered cooling units that utilize a source of compressed air and vortex tubes to cool down enclosed areas. But why would you choose a Cabinet Cooler over an A/C coolant driven system? Each system has pros and cons that can be weighed against each other.

A/C Coolant Driven Systems:
Pros:
Can produce higher cooling loads effectively

Cons:
Expensive up front
Constant maintenance

Cabinet Coolers:
Pros:

Inexpensive upfront cost, lower lifetime cost
No moving Parts / No actual maintenance

Cons:
Smaller range for effective cooling

Even in extremely aggressive environments, EXAIR Cabinet Cooler Systems provide reliable heat protection for your sensitive electronics and controls.

A/C Units operate in most cases using a chemical known as Dichlorodifluoromethane more commonly referred to as Freon (Freon is a registered trademark of Chemours Co.). By compressing and decompressing the liquid you can cause significant temperature drops in the surrounding air that can be blown into an area. This process requires a lot of moving parts that will eventually wear out and need to be replaced at a cost. Cabinet Coolers don’t have that issue, since they use vortex tubes there are no moving parts to wear out. As long as you provide clean dry air to a Cabinet Cooler the system will run indefinitely. Another thing to keep in mind is that although Dichlorodifluoromethane is a safer version of the older CFC’s , the chemical is not completely safe. Freon can be harmful to the environment as it can breakdown ozone, and due to its its density it will displace oxygen and can cause rapid suffocation.

Cabinet Coolers use compressed air, air which we breath and is all around us. So, no hazards with its energy source.

How the EXAIR Cabinet Cooler System Works

Lastly, although A/C units are cheaper to run they are much more expensive upfront cost and upkeep cost. This means in the long run it is actually cheaper to use a Cabinet Cooler because it does not have any upkeep cost for maintenance and repairs, along with being much cheaper to begin with.

EXAIR’s Cabinet Coolers are currently on promotion – receive a free AC Sensor with the purchase of any Cabinet Cooler.

Take advantage of our promo today!

If you have any questions or want more information on EXAIR’s Cabinet Coolers or like products. Give us a call, we have a team of application engineers ready to answer your questions and recommend a solution for your applications.

Cody Biehle
Application Engineer
EXAIR Corporation
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Ultraviolet Curing and Vortex Tube Cooling

Recently EXAIR worked on a project to cool down parts that were using Ultraviolet (UV) light to cure a surface coating. Ultraviolet curing is a photochemical process that uses UV light to cure/dry certain inks, coatings, and adhesives. Due to the fact that UV light produces a good amount of heat the product would heat up during the curing process and create issues for them down the line which slowed down production in order let them cool. The simple solution to this was the use of the vortex tube to blow on the product to cool it down during the process. By doing so they were able cool the product down to a suitable temperature for the process to speed up.

EXAIR’s Small, Medium, and Large Vortex Tubes


EXAIR’s Vortex Tubes are great for cooling down surfaces to temperatures below ambient thanks to the cold air stream that is produced from the vortex tube. Vortex tubes use a source of compressed air to create both a hot and cold stream of air simultaneously which allows the unit to be used for cooling but also heating applications. The amount of air flow coming out of either end of the Vortex Tube can be controlled; by doing so one can adjust the temperature of the air streams coming out.

There are numerous methods to distribute the cold air flow from a lone, or a series of, Vortex Tubes.

Although the main application for the Vortex Tube is to be used for cooling, it is occasionally used to heat as well. Heating applications are uncommon, but they are still possible. Since a vortex tube creates a cold and hot stream of air; by controlling what the fraction of air is flowing out of the cold end you can create a temperature rise (a rise from the starting air temp) of up to 195F! Now that is hot.

If you have any questions about compressed air systems or want more information on any of EXAIR’s products, give us a call, we have a team of Application Engineers ready to answer your questions and recommend a solution for your applications.

Cody Biehle
Application Engineer
EXAIR Corporation
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