Testing, Testing

One of the best criteria to know in a cooling application is the amount of cooling capacity required.  For example, if an ultrasonic weld needs to be cooled in 10 seconds and 400 BTU/hr. of cooling capacity is needed, we can recommend a suitable Vortex Tube.  (In this case, model 3208 with 550 BTU/hr. of cooling capacity.)  Or, if a specific temperature and flow of air is required, we can recommend accordingly. I recently spoke to a customer who needed a specific temperature of air at a low volume…

3408 Vortex Tube Test at 100 PSIG
EXAIR 3408 Vortex Tube tested at 100 PSIG with an inlet  compressed air temperature of 77°F (6.9 BARG, compressed air temperature of 25°C)

The photo above shows a test run for an end user that needed to achieve a specific cold outlet temperature from a Vortex Tube.  Their specific application required lower flow, lower temperature air, which led to the recommendation of our 3400 series units. The 3400 series Vortex Tubes produce the coldest air temperatures at a lower volume of air.

The project deadline for this end user had been shortened, making it imperative to find a solution which was not only suitable, but repeatable and readily available.  And, although the cold fraction percentages (which define temperature rise/drop from a Vortex Tube) are published on the EXAIR.com site and in our catalog, a quick test setup and photo can go a long way toward providing confidence within a customer that we could provide a solution.

The test proves the data from EXAIR is true to our published values, and gave the customer the confidence to order four pieces for their project.  Update:  The customer called today and ordered four more pieces.

Discussion and testing are methods we use in the Application Engineering department at EXAIR to determine if our products are suitable for an application.  If you have questions about your application and would like an EXAIR opinion, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer

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