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
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.
In southwest Ohio we are currently experiencing 88°F. And we have begun to see increased numbers of inquiries for Cabinet Cooler Systems to keep control cabinets cool. This comes with the territory of approaching summer here in the northern hemisphere, and elsewhere it is due to new machines going into areas of a facility where it is constantly hot and dirty. It seems like the perfect time to offer up some free stuff with our Cabinet Cooler Promotion.
That’s right, order any of the Cabinet Cooler® Systems listed and receive a free A/C Sensor Pen. This pen has saved me from getting shocked many of times around my home. Without it of course, I find myself guessing I turned the correct breaker off and, as soon as I touch the outlet I am working on I get hit with 110V. This sensor is helpful to locate the presence of voltage and avoid getting shocked.
We are here to assist your choice of Cabinet Cooler system and to provide a very fast solution to the downtime you are experiencing. We manufacture Cabinet Cooler systems from 275 Btu/Hr through 5600 Btu/Hr with NEMA 12, 4 and 4X integrity as well as Hazardous Location. If you don’t know what Cabinet Cooler System you need, take a look at our new Cabinet Cooler Calculator or the form below. It can be found on our site, get the information and call, fax, e-mail or live chat with an Application Engineer to get a quick and accurate response on what amount of cooling your system will need.
Over our thirty years in business we have also seen many companies who only experience a short span of seasonal heat and have found that 2000 Btu/Hr is enough refrigeration to offset summertime heat load, in most cases. Choosing a model with a thermostat control will turn the cooler on and off as needed and minimize compressed air use. Cabinet Cooler systems are in STOCK and ship same day for domestic and Canadian orders received by 3:00 pm EDT. We can get your cabinet cooled FAST and eliminate your heat related problems. Cabinet Cooler systems are shipped ready to install through a standard electrical knockout. There is no waiting for oil to settle back into the compressor motor, no mounting templates required or huge holes to cut into your cabinet. Cabinet Cooler systems have no moving parts to wear, making them rugged and lasting in your hot environment.
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
