Tag: airflow calculation

EXAIR Knowledge Base: A great and powerful tool

Published on by johnball2014Leave a comment

Knowledge is Power.  At EXAIR, we’re committed to providing our customers with the tools necessary to fix problems and train staff members with a selection of many different types of offerings.  We call this the “Knowledge Base”.  We have them segregated into different criteria to give you that “been there, done that” solutions.  There’s a ton of valuable information, and best of all, it’s all FREE!

Within our Knowledge Base, you’ll find case studies that highlight examples of applications where we’ve helped customers improve their processes, save money by reducing compressed air consumption, and improve worker safety. There’s a list of FAQs categorized by product line, a library of calculators to help estimate the savings you’ll experience, and a list of application examples.

In addition, we also have a library of previously recorded webinars that are free to view at your convenience.  We cover topics like inefficient vs. engineered nozzles, static generation, and finding and fixing leaks, to name a few.  In addition, we have videos that include product functions, informal videos, and tips and tricks for using our products.  We also include Application Assistance and an Efficiency Lab which will allow recommendations and performance comparisons. 

Don’t let these free resources go to waste.  You will have to sign in to EXAIR’s website, which is easy to do.  To find this wealth of information, just click on “Resources” in the top banner (as shown in the photo below).  It is a “one-stop” spot that gives available solutions with our Intelligent Compressed Air® Products.  

If you have pneumatic issues with blow-offs, cooling, cleaning, conveying, coating, or needing to conserve compressed air, we may have already solved this for you.  Don’t feel like we’re leaving you to figure everything out on your own. In addition to all the resources available to you within the Knowledge Base, EXAIR has a team of highly-trained Application Engineers with experience in a wide variety of industries and processes. There’s a good chance one of us has dealt with a similar application, and we’ll be happy to help point you in the right direction.

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

Photo: Question mark pile by qimono.  Pixabay license. 

Calculating Air Flow to Cool Manufacturing Processes

Published on by Lee EvansLeave a comment

IMG_7065
This application needed a way to cool steel plates from 150C to 70C

I’ve written before about using ambient air to cool an application, calculating the required airflow to maintain a temperature.  And, I was recently contacted by an end user in India in need of a way to cool electromagnets in a similar application.

The need was to reduce the temperature of high manganese steel plates (dimensions of 1800mm x 800mm x 500mm) from 150°C to less than 70°C, using air at 40°C.  These steel plates have a specific heat of 0.5107896 J/g°C, weigh 120kg each, and protect the coil and insulation of the electromagnets in this process.  So, just as was the case in previous applications, we started with the process shown below.

heat load calc process
Heat load calculation process

In doing so, we calculated a heat load of 279,245 BTU/hr., which will require an air volume of 1,805 CFM to cool as needed.  (Click the image below for an expanded view of the calculations)

Electromagnet calculations
Heat load calculations

The recommendation to provide this cooling was the use of (6) 120022 Super Air Amplifiers, operated at 80 PSIG and installed along the length of the plates to distribute airflow.  As we can see in the chart below, each 120022 Super Air Amplifier will move an air volume of 341 CFM at the outlet of the unit, making (6) of these units suitable for this application.  And, if we consider entrainment of additional ambient air at distances away from the outlet of the 120022 Super Air Amplifier, we can consider these units may cool the steel faster than the 1 minute cycle time used for calculation purposes.

air amp chart
Super Air Amplifier performance chart

This application is a great example of how an engineered compressed air solution can remove process disturbances effectively, and efficiently solve problems.  If you have a similar application or even one that is entirely different, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE