EXAIR’s Calculator Library

If there is one thing you can always count on it’s a good calculator, and EXAIR offers you 3 — right on our website!!! The calculator library consists of an Air Savings Calculator, an EFC Calculator, and a Cabinet Cooler sizing calculator. All 3 of these add exceptional value and insight into our products. Let’s take a minute and look at each of these calculators in a little more detail.

The Air Saving Calculator allows you to compare a current product, to one of our products based upon overall cost. In order to make this effective for you, you will need to know the SCFM that your current solution is using. With that information, we can factor in the cost of our product and the SCFM consumption of this new solution, and give you an Air and Cost savings number. For example, if you are using a 1/4″ open pipe for blow off, you would be using @ 40 SCFM (not going to mention the OSHA violations – that’s for another blog). By placing one of our Super Air Nozzles on this open pipe, we will save you so much air (SCFM) that you can quickly see (above) that this one nozzle, can save you up to $1350 per year… One Nozzle!!!

The next calculator is the EFC calculator. An EFC is an Electronic Flow Control that can help you quickly automate your process. The EFC will allow you to use air only when it’s necessary and cut down on consumption. For example, if your conveyor has dead space between products, the EFC will shut the air flow off during the dead space. The calculator will tell you how much money you can save by installing the EFC. This will even tell you how long it will take to pay off the initial cost of the EFC unit. To use this calculator you will need the SCFM being consumed, the % of time that the product needs to be on, the purchase price of the EFC (this varies by size, call for details, or see on the link), and your cost of compressed air. We have $0.25 in this blank as a general standard, but if you know your actual, you will get a more concise answer. Your cost could be much higher, I’d be surprised if it is lower. The Example to the left shows the effects of a $1200 EFC that runs a product at 80 SCFM, and needs to be on 45% of the day. The EFC turns off the air the other 55% of the day when there is no reason to run the air. This pays for itself in 76 days, and adds $3960 to the bottom line each and every year.

The 3rd and final calculator that EXAIR offers online is the most used. It is our Cabinet Cooler System Calculator. Electrical cabinets get hot, and will overheat your electronics. Our Cabinet Coolers are the most efficient method to cool these cabinets, and eliminate electronic damage from overheating. There are no moving parts in these Cabinet Coolers, and the Vortex based system cools these with little to no maintenance. You simply need to supply these with clean, dry, compressed air. As you can imagine, these cabinets come in all sizes, and there are all sorts of various electronics that can be inside of these. We need the measurements and temperatures so that we can calculate the correct size Cabinet Cooler system for you. Our Cabinet Coolers have large size differences, from as little as 4 SCFM and 275 Btu/hr, up to 80 SCFM and 5600 Btu/hr, and we can go larger than this if necessary. The good thing about this calculator is that all of the information you need to enter is readily available to you as long as you have a a tape measure and a thermometer.

We do encourage everyone to take advantage of these on-line tools, however always remember that experienced application engineers like me, are here M-F 7AM-4PM EST to help you in any way possible.

Thank you for stopping by,

Brian Wages

Application Engineer

EXAIR Corporation
Visit us on the Web
Follow me on Twitter

Cover photo by Peggy_Marco licensed by Pixabay

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

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS

Cabinet Coolers: How to Determine Heat Loads

As summer continues, electrical panels will continue to overheat and cause problems within your process lines.  Freon-based coolers can be less effective in higher ambient conditions; and opening the electrical panels to have a fan blow inside creates a dangerous hazard.  The electrical industry states that for every 10oC rise above the operational temperature, the life of an electrical component is cut in half.  To reduce loss in production and premature equipment failures, it is important to keep electrical components cool.  The EXAIR Cabinet Cooler Systems are designed to do just that. 

From right to left: Small NEMA 12, Large NEMA 12, Large NEMA 4X

To find the correct type and size, we need some information about your electrical panel.  EXAIR makes it easy with the Cabinet Cooler Sizing Guide.  This sheet goes over the important details to find heat loads, proper NEMA type, and options for easy installation.  With a filled-out form, we can make sure that the correct model is recommended.  First, we have to start with the surface area of the electrical panel.  From here, we can do some heat load calculations to compare it with the proper cooling capacity. 

To properly reduce the temperature internally, we need to calculate how much heat is being generated.  Heat loads come from four main areas; internal, external, fan, and solar.  From these four, we can add them together to get the total heat load.  So, on the hottest day of the hottest month, the EXAIR Cabinet Cooler System will still keep your electronics cool.  Here are some methods to find the information needed for heat load calculations.

Internal Heat Load:  The internal load is the heat generated from inside the electrical panel.  This heat is produced from the inefficiencies of electrical devices.  There are two ways that we can figure out the internal heat load.

Step A: The simplest way is by hanging a piece of metal like a washer inside the panel for about 15 minutes.  We can get an average temperature inside.  In the sizing guide, you can mark the temperature next to “Internal temperature now”.  To calculate the heat load, we will need the external temperature at the same time you measured the piece of metal.  This temperature difference can determine the internal heat load per surface area of the panel.  See the chart below.

Step B:  if you know the electrical components inside that generate heat, a list can be made with volt/amp ratings, or watts.  This is very useful for new panels.  The major devices would be VFD (Variable Frequency Drives), power supplies, UPS, transformers, thyristors, etc.  We can calculate the inefficiency of the electrical components which will give us the internal heat load.

External Heat Load:  To keep the electronics cool on the hottest day, we will need to know the highest external temperature that the panel will see.  This can include the temperature that is near an oven.  This can be marked in the Max External Air Temperature Possible.  We can compare this to the Max Internal Air Temperature Desired.  Most electrical components are designed to operate at 95oF (35oC).   With the same chart as above, you can use the temperature difference to determine the external heat load per surface area of the panel.

Panel Fans:  To control the environment inside the electrical panels, we need to block all openings and vents.  And this will include removing panel fans if they are installed.  The Cabinet Cooler System will blow dry cold air to push out the hot humid air from the electrical panel back through the Cabinet Cooler.  Since we are removing a “poor” cooling device, we still need to add this to the heat that is being removed.  You can either give the diameter of the fan or the flow of the fan. 

Solar Heat Load:  The solar heat is only needed if the panel is located outside without cover and exposed to sunlight.  For this type of heat load, we will need to know the color of the electrical panel.  Lighter colors will not absorb as much heat as darker colors.

Because there is so much information that is critical for proper sizing, EXAIR also created a Cabinet Cooler System Calculator to give you a good recommendation to keep your electronics cool. I gave some examples above on how to find the heat loads.  Electrical shutdowns are expensive and annoying.  If you have interruptions from high internal temperatures, EXAIR Cabinet Coolers are a great solution.  They can be installed quickly and easily.  With no moving parts or costly preventative maintenance needed, they can run for decades in keeping your electronics cool.  For our U.S. and Canadian customers, you will receive an AC Sensor for free, a $65.00 value, as a promotional item from now until the end of August 2022 with qualified purchases.  How can you not give them a try?  If you have any questions about Cabinet Coolers or the Sizing Guide, you can contact an Application Engineer at EXAIR.  We will be happy to help.

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

EXAIR’s New Cabinet Cooler® System Calculator

For the longest time we have been using this form on EXAIR.com to get the information we needed to manually calculate the internal and external heat loads and ultimately make a recommendation on which Cabinet Cooler System would be best for that application! Typically it would take thirty minuets to an hour to get a email back from a application Engineer!

While the manual Cabinet Cooler Sizing Guide worked great (and we will still reply within 24 hours), we have been racking our heads over here to better that process and get you a solution faster than ever! Now you type in your information and you have a recommendation and a link to that product on the website where you can learn more or place an order! So you can go from form to order in less than 5 Minuets!!!! Check it Out HERE!!

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!

Cabinet Cooler Calculator

            EXAIR’s complete line of Cabinet Cooler systems include 120V AC, 240V AC and 24V DC thermostat voltage, continuous operation, type 316 stainless steel and high temperature models – all of which are selectable with the new calculator. Find this new tool on the website EXAIR.com, in the Knowledge Base Calculators, along with many other resources, such as the CAD Library and Application Database, which also help customers choose a perfect solution. Cabinet Cooler systems start at $534. https://www.exair.com/knowledgebase/calculator-library/cabinet-cooler-system-calculator.html

Jordan Shouse
Application Engineer

Send me an Email
Find us on the Web 
Like us on Facebook
Twitter: @EXAIR_JS