Video Blog: Cabinet Cooler® System Calculator

In may I wrote a Blog Announcing our new Calculator tool on EXAIR.COM! You can read it here!

The Video below will walk you through how to get the information you need to fill the form in, and take you all the way to final where you can add it to your cart!

By providing certain information like size of the enclosure, NEMA rating needed, and environmental conditions, this new calculator will sort through our large selection of ready-to-ship Cabinet Cooler® Systems and provide instant feedback on the best model number for any applicable electrical enclosure.  Taking the guess work out of the equation, EXAIR’s Calculator ensures the customer that they can be confident in selecting the correct product for their unique specifications. You can even Print the form for your records!

If you have any questions or need additional support with the Sizing Calculator please reach out to one of our application Engineers give us a call. Or shoot us an email to techelp@exair.com

Jordan Shouse
Application Engineer

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EXAIR High Temperature Cabinet Cooler System

Inside, outdoors, high temperature, dirt/dust/humidity, corrosive and classified environments are no problem for EXAIR Cabinet Cooler Systems

EXAIR Cabinet Cooler® Systems will help eliminate downtime due to heat, dirt and moisture. Our Cabinet Cooler® Systems are UL listed to maintain NEMA 4, 4X and NEMA 12 integrity. All high temperature cabinet coolers are UL listed and CE compliant. Our Cabinet Coolers are a reliable way to cool and purge electrical control panels from the use of vortex tube technology, which creates cold air from normal compressed air.

One of our specialized applications are for Cabinet Cooler® Systems in areas with hotter than normal ambient temperatures. Sometimes electrical cabinets are located in environments near high heat sources such as boiler rooms, furnaces, ovens or other heat sources. If the ambient temperature is above 125° F (52° C) we offer a High Temperature Cabinet Cooler systems.

EXAIR High Temperature coolers offer relief for ambient temperatures ranging from 125° – 200° F (52°C – 93°C). Our Cabinet Cooler calculator found at www.EXAIR.com will automatically determine if the High Temperature cooler is required for your specific application.

The High Temperature Cabinet Cooler systems are stock items, ready to ship and easily installed. If you have questions or need more information please contact any of our Application Engineers.

Eric Kuhnash
Application Engineer
Email: erickuhnash@exair.com
Twitter: @EXAIR_EK

Electrical Panel Heat Protection: Limitations of Fan Cooling

In preparation for some labor-intensive outdoor projects, I did some research into heat-related health risks, and their prevention. My first thought on prevention was getting someone else to do it, but my wife made a good case for “pride in ownership”, and I DO have a good many tools suitable for these projects. Also, I am notoriously frugal, so after getting a couple of estimates, I realized the value in a little DIY (do it yourself) and commenced planning.

High on that list of risks was the possibility of heat stroke. It’s recommended that the victim be taken to a cool space (someplace air conditioned, for example). Air flow (like from a fan) can help too, but only if they’re taken someplace where the ambient temperature is less that 95F (35C). If it’s that hot, the air flow can actually make things worse, since heat transfer requires a difference in temperature. If the cooling medium (air, in this case) is the same temperature as the object to be cooled (the human body, in this case), no heat will be transferred – and the heat stroke wins. That’s a bad day in the back yard.

This is, in fact, the exact same limitation with a popular method of electrical panel cooling: fans. We’ve been using mechanical methods of imparting motion to air for cooling purposes for a long, long time: Blowing on a spoonful of soup or a cup of coffee before a warm (but not scalding) sip, waving hand fans at oneself during indoor gatherings, installing electric fans in those same buildings, and the list goes on. Fans are inexpensive to purchase & operate, come in a variety of sizes & configurations, and are oftentimes used to circulate cooling air through occupied rooms, confined spaces, and, of course, electrical & electronic panel enclosures.

These are quite effective for panels with moderate-to-high internal heat loads, as long as the ambient area temperature is less than the temperature you wish to cool the panel’s internal air to. In those situations, the only real concern is the quality of the air in the environment. As you can see in the photo to the right, filters are an absolute “must”, and they’re going to require regular maintenance. This means cleaning or replacing the filters, as well as cleaning the fan grills and blades themselves. It’s still very likely that some of that dust is going to get inside the enclosure, and while we’re on the subject of environmental contamination, so will humidity. I probably don’t need to tell you that dirt and/or water, and electricity, don’t mix.

There are other methods of cooling (panel a/c, thermoelectric coolers, water cooled heat exchangers, heat pipes, etc.) that limit environmental contamination, but they’re still going to need periodic (oftentimes frequent) attention: filters will clog, refrigerant coils will get fouled and corrode, moving parts will wear, motors & switches will burn out, etc. Even with the advances made in refrigerant technology, the leaks that panel a/c and heat pipes are prone to are still bad for the environment.

If this sounds like your environment, and you’re looking for safe, dependable, durable heat protection, look no further than EXAIR Cabinet Cooler Systems. Using the Vortex Tube phenomenon, they generate cold air from your compressed air supply, with no moving parts to wear or electric devices to burn out. Systems are on the shelf & ready to ship in cooling capacities to 5,600 Btu/hr. We also “tailor-make” systems for higher heat loads, from stock products, that can usually ship right away as well. Once installed on a sealed enclosure, the only thing the internals of that enclosure are ever exposed to again is clean, moisture free, cold air. All of our Cabinet Cooler Systems come with an Automatic Drain Filter Separator – the only preventive maintenance that’s ever required for the systems is the periodic replacement of the filter’s particulate element.

Inside, outdoors, high temperature, dirt/dust/humidity, corrosive and classified environments are no problem for EXAIR Cabinet Cooler Systems

We can quickly and accurately specify a Cabinet Cooler System to meet your needs with just a few key pieces of information – you can fill out a Sizing Guide (or complete one online) and send it in to us, or you can call an Application Engineer with the data. It only takes a minute to do the calculations, and we do them over the phone all the time. Installation is straightforward and usually only takes a matter of minutes. We have a number of short “how to” videos on our website that cover all aspects of installation, and if you ever have specific questions or concerns, an Application Engineer is a phone call away. We look forward to hearing from you!

Russ Bowman, CCASS

Application Engineer
EXAIR Corporation
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Tale Of The Tape: EXAIR Cabinet Cooler Systems vs. Air To Air Coolers

As summer heat continues to rise, so does the volume of inquiries we get for EXAIR Cabinet Cooler Systems.  Many callers want to know what differences they can expect in using our products versus other methods they’re considering…or even using…right now.

One very common method is the use of a fan to draw cooling air into the panel, from the surrounding environment.  This is the simplest, and least expensive option, but it has two main drawbacks:

  • Components inside the panel are now exposed (albeit in a controlled manner) to the very same environmental elements that putting them inside a panel was supposed to protect them from.
  • Since the air surrounding the panel is the cooling medium, the temperature inside the panel will never be lower than the temperature outside the panel.  Fan cooling in hot environments will still allow overheating.
If a computer’s fan in the family room can get this dusty, imagine how much worse a control panel on a factory floor can get.

Two key benefits of EXAIR Cabinet Cooler Systems take direct aim at these drawbacks:

  • Once properly installed on a sealed enclosure, all the air entering the enclosure comes from your compressed air supply.  It’s also been through the Automatic Drain Filter Separator that comes with every EXAIR Cabinet Cooler System, so it’s clean and moisture free.
  • The air generated by the Cabinet Cooler is refrigerated, thanks to the Vortex Tube phenomenon.  It doesn’t matter how hot it is in the area; the air going into the panel is about 50F colder than the compressed air supply.  
Cold air from your compressed air supply, with no openings to the environment, eliminates any environmental effects on cooling capabilities.

Fans are one of the two methods of “air to air” cooling – the other is a closed loop system commonly known as a heat pipe:

*Hot air (inside the panel) causes refrigerant in heat pipe to flash to a gas.
*Cold air (from the environment) causes the refrigerant to condense to a liquid.

While this eliminates the environmental contamination concerns of dirt & humidity, it’s still limited.  Just like fan cooling, this method cannot make it cooler inside the enclosure than the ambient temperature in the surrounding area.

Despite this limitation, heat pipes (first column, below) are generally quite cost effective.  But, considering a total cost of ownership difference of less than $15/year, it’s clear that EXAIR Cabinet Cooler Systems, which aren’t limited by ambient temperature, are a strong contender for favorite selection.

Reliable, durable, and cost effective: the EXAIR Cabinet Cooler System.

EXAIR Cabinet Cooler Systems provide up to 5,600 Btu/hr worth of cooling power.  Regardless of your environment (even Classified/Hazardous locations,) we’ve got a system to keep your electronic and electrical panels safe from heat, humidity, and contamination. If you’d like to discuss enclosure cooling and the benefits of EXAIR Cabinet Cooler Systems, give me a call.

Russ Bowman
Application Engineer
EXAIR Corporation
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Computer Fan image courtesy of tico_24 Creative Commons License