EXAIR’s Efficiency Lab can Help With your Energy Audit, Quantify Savings and Provide an ROI

I recently received an inquiry from a customer to test their current air guns through our Efficiency Lab service. According to the operators, the handheld blow gun they were purchasing from a commercial retailer was too loud and complaints were rolling in.  They were also hoping to save some compressed air in the process as they were performing an energy audit at the same time.

Commercial Air Gun w/ Cross Cut Hole
Commercial Air Gun w/ Cross Cut Hole
Cross Cut Hole Nozzle
Cross Cut Hole Nozzle

The gun they sent in looked fairly similar to our Precision Safety Air Gun but it did not have an engineered nozzle on the tip of it.   Instead, it was simply a cross cut hole in a piece of material.   The air inlet to the gun was a 1/4″ NPT just like our Precision Safety Air Gun, the extension on the gun was slightly longer, the only significant variance I saw was the tip.

EXAIR Model 1410SS-CS
EXAIR Model 1410SS-CS
The Model 1110SS Nao Super Air Nozzle and Chip Shield
The Model 1110SS Nao Super Air Nozzle and Chip Shield

To try and get as much information as possible I measured the O.D. and I.D. of the extension, the hole size was approximately .140″.  I measured the extension on our Precision Safety Air Gun just to see what is different, it came in at the same size.  So, I flow tested the competitive blow gun with their tip on it and came up with air consumption of 12.69 SCFM, noise level of 92 dBA at 3′ away, and a blowing force of 11.5 oz at 80 psig.   I then measured the same attributes of EXAIR’s model 1410SS-CS Precision Safety Air Gun at 80 psig inlet pressure.  The model 1410SS-CS measured 8.3 SCFM, gave 8.1 ozs of working force, and only produced a 75 dBA sound level from 3′ away.

The sound level reduction was a total of 17 dBA which is below the OSHA standard for allowable noise level exposure, as well as reduced their air consumption by 4.39 SCFM.  That is almost a 35% reduction in their compressed air usage per gun replaced.  After seeing these levels of reduction the customer had more than enough information to provide management with in order to replace the blow guns not just for noise level reduction but also because it will reduce air use and save money. A clear supportive role in their energy audit.

If you would like to discuss how EXAIR can provide some free force, flow, and noise level testing for your facility, please contact an Application Engineer or check out the Efficiency Lab page on our site.

Brian Farno
Application Engineer Manager
BrianFarno@EXAIR.com
@EXAIR_BF

Super Air Knife Replaces Blower Driven Knife

This past week I spoke with a customer who had a blower driven air knife.  They had a slot cast extruder line that was making something similar to a plastic cling wrap.  The process had a blower driven knife which was used to blow the product after it was extruded onto a chilled roll in order to cool the product and convey it to the next point in the process.  The blower driven knife did not have laminar flow and was constantly needing adjustment.  To top all things the blower would pick up particulate from the ambient environment and send it onto the part also.

The customer replaced the blower system and the blower driven knife all with a single Super Air Knife.  The Super Air Knife never needs adjustment and has a laminar flow which permits even pushing of the wrap onto the chilled roller.  The other part of this application that helped the customer is the fact that they no longer have particulate that was getting sucked up by the blower and being blown onto the product and causing defects.  The Super Air Knife is also a smaller footprint than the blower driven knife was so they are able to get closer to their application and have an even more precise air flow going onto the product.

If you have an application where space and laminar flow are the issue feel free to give us a call.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF