How Lowering Sound Levels Produces ROI

Sound levels and ROI don’t immediately link together in a quick thought. Unless you are me and things seem to link up that don’t always go together, like peanut butter and a cheese burger. (Trust me, just try it, or if you are near West Lafayette, Indiana just go try the Purvis Burger across the street from Purdue University.) The truth behind tying sound levels being reduced and ROI together is actually pretty simple.

For this example, I am going to stay fairly high level as we could get into some pretty deep measurements of what exactly could be a cost savings.  If we reduce the sound level being generated by point of use compressed air products that is easiest to do by implementing engineered blow off products as well as reducing the operating pressure. Let’s use this example: A 1/4″ copper tube that is being used as a blow off will give off a noise level of over 100 dBA from 3′ away.  The table below shows that at an 80 psig inlet pressure the same tube will also consume 33 SCFM of compressed air.

By installing a model 1100 1/4″ FNPT Super Air Nozzle on the end of this copper tube, we  reduce the noise level generated by the blow off to 74 dBA. This measurement is at the same 80 psig inlet pressure and from 3′ away, which is well below the OSHA standard for allowable noise level exposure.  This also gives a broader more defined pattern to the air stream which may permit a reduction in compressed air pressure.

The other factor this changes is that the air consumption is reduced by 19 SCFM of compressed air which then results in energy savings.  This ultimately ends in a simple ROI equation where we are simply using the compressed air reduction as the only variable for the return.

 

By reducing the air consumption of a process that operates 24/7, 250 days a year that equates to  a savings of 6,840,000 SCFM per year and that equates to $1,710.00 USD. This does not account for any reduction in paying for hearing protection that may no longer be needed, or increase in production because the application functions better.

So you see, reducing noise levels in a facility can easily amount to a sizable cost savings in energy going towards compressed air consumption.  If you would like to walk through any potential applications, please contact us. 

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

You Don’t Need to Spend Thousands to Optimize Your Compressed Air System

There is no denying it, saving compressed air is a process.  This process often involves some type of energy audit or at the very least an evaluation of something going wrong with production and a way to improve it.  Many programs, consultants, and sales reps will devise a solution for the problem.

Often times the solution is to create a more efficient supply side of the compressed air system. The supply side is essentially everything within the compressor room or located in close proximity to the actual air compressor. While optimizing the supply side can amount to savings, many of these solutions and services can involve great expense, or capital expenditure processes.  These processes can often lead to delays and continued waste until the solution is in place.  What if there was a way to lower compressed air usage, save energy, solve some demand issues on the compressed air system and save some money while the capital expenditure process goes through for the larger scale project.

These solutions are a simple call, chat, email or even fax away. Our Application Engineers are fully equipped to help determine what points of your compressed air demand side can be optimized. The process generally starts with our Six Steps To Compressed Air Optimization.

6 Steps from Catalog

Once the points of use are evaluated the Application Engineer can give an engineered solution to provide some relief to the strain on your compressed air supply side.  For instance, an open copper pipe blow off that is commonly seen within production environments can easily be replaced with a Super Air Nozzle on the end of a Stay Set Hose that will still bend and hold position like the copper pipe does while also saving compressed air, reducing noise level, and putting some capacity back into the supply side of the compressed air system.

engineered nozzle blow offs
Engineered solutions (like EXAIR Intelligent Compressed Air Products) are the efficient, quiet, and safe choice.

One of the key parts to the solutions that we offer here at EXAIR is they all ship same day on orders received by 3 PM ET that are shipping within the USA. To top that off the cost is generally hundreds, rather than thousands (or tens of thousands) of dollars. Well under any level of a capital expenditure and can generally come in as a maintenance purchase or purchased quickly through the supply cribs.  Then, to take this one step further, when the EXAIR solution shows up within days and gets installed EXAIR offers for you to send in the blow off that was replaced and receive a free report on what level of compressed air savings and performance increases you will be seeing and provide a simple ROI for that blow off (though we would also encourage a comparison before a purchase just so you have additional peace of mind).

This amounts to saving compressed air and understanding how much air is being saved, adding capacity back into your supply side which will reduce strain on the air compressor, give the ability to increase production while the capital expenditure for the end solution of controls and higher efficiency on the supply side is approved to then save even more compressed air and energy.

The point is this, savings and efficiency doesn’t have to involve a capital expenditure, if that is the end game for your project that is great! Let EXAIR provide you a solution that you can have in house by the next business day to save money NOW and then put that savings towards another project. No matter the method, it all starts with a call, chat, email or fax.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

 

Limiting Noise Exposure with Mufflers for Compressed Air

Mufflers come in many shapes and sizes. Each with their own benefits.

If you have ever walked into a manufacturing facility and heard the hiss or even worse the banshee scream of compressed air being exhausted to ambient, whether it be from a cylinder discharge, a timed drain going off, or a bypass valve being activated, they all could be hushed with a muffler. A muffler for compressed air comes in several shapes and sizes. EXAIR offers four separate types from stock to help attenuate the noise disruption within your facility.

The OSHA standard for allowable noise exposure is 29 CFR-1910.95(a) and outlines the number of hours per day any individual can be exposed to a particular noise level. These noise levels are expressed in decibels (dbA).

Hearing loss is the best known, but not the only, ill effect of harmful noise exposure. It can also cause physical and psychological stress, impair concentration, and contribute to workplace accidents or injuries.
Reclassifying Mufflers attenuating the exhaust of a pneumatic cylinder.

The first type I would like to showcase are the Reclassifying Mufflers. These are ideal for cylinder exhausts or valves which commonly contain an oil mist within the air stream which can easily contaminate the surrounding area. The patented design of the removable element separates oil from the exhausted air so virtually no atomized oil is released into the environment. They also attenuate the exhaust noise level up to 35 decibels. The filter element helps the exhaust to meet the OSHA Standard 29 CFR 1910.1000, a worker’s cumulative exposure to oil mist must not exceed 5 mg/m³ by volume in any eight hour shift of a forty hour work week.

The chart below helps to properly size the Reclassifying Muffler for a pneumatic cylinder. One key to proper installation of these mufflers is they must be installed vertically in order to properly trap and drain the oil.

Reclassifying Muffler Quick Pick Chart
Sintered Bronze mufflers are excellent choices for tight installation locations and are easily sized.

The next type of muffler to discuss are the Sintered Bronze Mufflers that are offered in ten different sizes. These are an excellent low cost solution which easily install into new or existing ports. Each size is designed to provide minimal back pressure and restriction for the individual port size. The quick pick chart below helps to easily select the correct size for attenuating the exhaust of a pneumatic cylinder. One key difference between these and the Reclassifying Mufflers is, these do not have to be oriented vertically as they do not collect the oil out of the exhaust air.

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The model 3913 – 3/4″ NPT Straight Through Muffler

If the process air needs to be directed or plumbed away from the operator then the Straight Through Mufflers are the ideal selection as they offer an NPT threaded inlet and exhaust. They are available in three standard NPT sizes from stock. These mufflers can be installed in any orientation and work well with our Vortex Tubes to help pass the cold air through while lowering the operating sound level of the tube. The average noise reduction of the Straight-Through Mufflers is 20 dB. This can easily reduce the noise level of an operation to below the OSHA standard requiring hearing protection for operators in the area.

The model 3903 Heavy Duty Muffler

The final option for mufflers from EXAIR are the Heavy Duty Mufflers. These are available in two sizes from stock and are constructed of corrosion-resistant aluminum with a stainless steel internal screen. These can be installed in any orientation and are ideal for protecting exhaust ports from contaminants that may clog or damage the device they are attached to. The typical noise reduction from installation is 14 dB with these mufflers.

These are available in two sizes from stock and are constructed of corrosion-resistant aluminum with a stainless steel internal screen. These can be installed in any orientation and are ideal for protecting exhaust ports from contaminants that may clog or damage the device they are attached to. The typical noise reduction from installation is 14 dB with these mufflers.

To summarize, EXAIR offers a multitude of options when it comes to lowering sound levels in operation areas that are caused by exhausted compressed air. Each of the mufflers discussed above are shipped same day from stock to meet your immediate need. If you are unsure of which muffler to use for your application, feel free to contact an Application Engineer.

Brian Farno
Application Engineer
Ph. 1-513-671-3322
BrianFarno@EXAIR.com
@EXAIR_BF

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

Happy Earth Day 2019!

Today marks the 49th annual Earth Day and it will be observed in over 193 countries.  For EXAIR, this year marks our 36th year helping compressed air users save compressed air energy and electrical resources.

It is also another year that we continue to focus on manufacturing our products with minimal impact and doing our part to help protect our planet. We are proud to manufacture efficient products, implement processes and programs throughout our facility to help use our resources wisely and recycle everything we possibly can. 

First and foremost, we manufacture and sell Intelligent Compressed Air Products that are specifically designed to reduce the use of compressed air throughout facilities.  On top of that, when you purchase an EXAIR product it will arrive in fully recyclable packaging and, in most cases, is made from a material that will be recyclable should it reach a point it is no longer useful.

Over the past years we continually look for improvement opportunities within our systems and processes. Recently we have made improvements to the efficiency of our computers and computer servers which require fewer Kilowatt hours (KWH) per day. We have further reduced our wastewater for reclamation by another 17%, and minimized our own compressed air use by 1 million cubic feet.

We use our very own Chip Trapper Systems in our manufacturing areas to extend the water soluble coolant life from 6 weeks per changeover to 6 months per changeover. Keeping our coolant clean allows us to minimize the total amount of wastewater we recycle each year. 

EXAIR recycles 100% of the metal scrap from our machining processes, which equates to 6.5 tons. Our cardboard and mixed paper products are also recycled 100%. Of the waste we place into our trash dumpsters – 80% is recycled and 20% is sent to the landfill.     

In total over the past year, EXAIR recycled 36.6 tons of paper and cardboard which equates to 80% of the solid waste we produce is recycled.  We focus on more ways to improve this percentage every year.

Another waste reducing factor that has proven to work out well for EXAIR is asking every customer if they accept digital invoices rather than requiring them to be printed and mailed.   Thanks to our wonderful customers we have been able to eliminate 91% of all printed and mailed invoices which helps to reduce our resources used as well as the amount of materials that are possibly turned into solid wastes at their facilities. This also prevents the gas and vehicles necessary to deliver all of these invoices by mail. 

On top of all the efforts above, we also continue to maintain RoHS compliance on all electronic products, as well as actively track our supply chains to ensure no Conflict Minerals are being sourced from the Democratic Republic of Congo.

If you have any questions on how we can help your facility reduce their volume of compressed air or why we continue to reduce our wastes and increase our recycling efforts, contact us.

Happy Earth Day from EXAIR!

 

Image Credit: NASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring

The Value Of A Pressure Regulator At Every Point Of Use

regulator
EXAIR Pressure Regulator

To understand the value of a having a Pressure Regulator at every point of use we should start with identifying the two types of Pressure Regulators, Direct Acting & Pilot Operated.  Direct Acting are the least expensive and most common (as shown above), however they may provide less control over the outlet pressure, especially if they are not sized properly.  However when sized properly they do an outstanding job.  Pilot Operated Regulators incorporate a smaller auxiliary regulator to supply the required system pressure to a large diaphragm located on the main valve that in turn regulates the pressure.  The Pilot Operated Regulators are more accurate and more expensive making them less attractive to purchase.  The focus of this Blog will be on the Direct Acting Pressure Regulator.

The Direct Acting Pressure Regulator is designed to maintain a constant and steady air pressure downstream to ensure whatever device is attached to it is operated at the minimum pressure required to achieve efficient operation.  If the end use is operated without a regulator or at a higher pressure than required, it result’s in increased air demand and energy use. To clarify this point, if you operate your compressed air system at 102 PSI it will cost you 1% more in electric costs than if the system was set to run at 100 PSI! Also noteworthy is that unregulated air demands consume about 1% more flow for every PSI of additional pressure.  Higher pressure levels can also increase equipment wear which results in higher maintenance costs and shorter equipment life.

Sizing of the Air Regulator is crucial, if it is too small to deliver the air volume required by the point of use it can cause a pressure drop in that line which is called “droop”.  Droop is defined as “the drop in pressure at the outlet of a pressure regulator, when a demand for compressed air occurs”.  One commonly used practice is to slightly oversize the pressure regulator to minimize droop.  Fortunately we at EXAIR specify the correct sized Air Regulator required to operate our devices so you will not experience the dreaded “droop”!

Standard Air Knife Kit
EXAIR Standard Air Knife Kit Which Incudes Shims, Properly Sized Pressure Regulator & Filter Separator

Another advantage to having a Pressure Regulator at every point of use is the flexibilty of making pressure adjustments to quickly change to varying production requirements.  Not every application will require a strong blast sometimes a gentle breeze will accomplish the task.  As an example one user of the EXAIR Super Air Knife employs it as an air curtain to prevent product contamination (strong blast) and another to dry different size parts (gentle breeze) coming down their conveyor.

EXAIR products are highly engineered and are so efficient that they can be operated at lower pressures and still provide exceptional performance!  This save’s you money considering compressed air on the average cost’s .25 cents per 1000 SCFM.

Super Air Knife Performance
EXAIR Super Air Knife Performance Specifications At 5 Different Pressures.

If you would like to discuss Air Regulators or quiet and efficient compressed air devices, I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer
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Reduce, Reuse, Recycle

I think we have all heard the mantra Reduce, Reuse, Recycle – a phrase that is thought to have originated back in 70’s when environmental protection became a governmental policy.

We at EXAIR can help your company follow this important principle and help to keep your costs down as well.

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Reduce – Reduce the number of times you change out your coolant, reduce your wastewater. Our Reversible Drum VAcs and Chip Trappers help keep your coolant clean by providing a simple and effective method to remove and/or strain your coolant.

Also, remember this – they are VERY hard to break or ruin. If you have one of our liquid handling Reversible Drum Vacs or Chip Trapper units, and the performance isn’t quite as you remember it to be, give us a call.   We can help to trouble shoot and narrow in on the root cause.  Most of the time, it is a simple fix, such as a air leak or a change to the air supply system that has caused a drop in performance. If we have eliminated all of those possible causes, we can offer the RDVREFURB option. Simply send in your Reversible Drum Vac pump unit, and we will do a free evaluation. Then we’ll let you know what we find, and provide a quote for the repair.  The repair typically involves a thorough cleaning, replacement of a few basic parts, and then setting and testing to original factory specification.  Because the unit has no moving parts, there isn’t much that can break down or go wrong.  Don’t throw away that unit, REDUCE the amount of waste you create.

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Reuse – Maybe you have a Super Air Knife in storage that is not in use, and you come up with a need, but the Knife doesn’t quite match the application.  We can provide new custom shim to change the air flow pattern.  Perhaps you have a 24″ Super Air Knife, but the new application requires only 18″ of airflow.  You can send the knife in and we can clean it up and install a new custom shim to provide the exact airflow pattern that meets your requirements.  Or, we can send the new shim directly to you for your team to install. Don’t let the unused product lie around, REUSE it for another process or application.

Super Air Knife

Recycle – If for what ever reason a product has been deemed to be no-longer viable and cannot be reused, the time comes to dispose of it.  We hope that you would take the time to recycle it properly. With materials of construction including brass, aluminum and type 303 and type 316 stainless steels, most EXAIR products can be RECYCLED as common metals and you may even get a little money back!

To discuss your processes and how an EXAIR Intelligent Compressed Air Product can provide a beneficial service, feel free to contact EXAIR and myself or one of our other Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer

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Photo Credit – “Recycling” by Andy Arthur is licensed under CC BY 2.0

Safety – When You Least Expect It You Need it Most

The cold weather kept me indoors this weekend and I conceded to being a couch potato in front of the TV. One of the shows I watched was the lumberjack competitions – and let me tell you, those guys are crazy. Standing on a board wedged into a notch in the side of a tree, up 40 feet in the air and swinging an ax is just not safe. But, that was the way it was done in the early days before mandated safety rules.

Afterward, I watched a little news only to see hundreds of motorists stranded in their cars due to inclement weather. Folks were on their way home from work and ended up sleeping in their cars. I know it is recommended that you carry an emergency kit in your car but I never gave it any thought it would be needed it in the city. Then I was jolted from my couch when the smoke alarms went off. I forgot about my buffalo wings in the oven. Wow! What if I had left the house?

In the workplace, compressed air safety should be a top priority. Open compressed air lines are extremely noisy and can cause permanent hearing loss which is addressed  OSHA Standard 29 CFR – 1910.95 (a) regarding the allowable noise exposure. High pressure compressed air can pierce the skin and enter the blood stream, causing a dangerous blood embolism – this is why OSHA has standard CFR 1910.242(b), 30 PSI maximum dead end pressure for compressed air blow off.

One of the main issues with regulating all of your compressed air lines to less than thirty psig is, thirty psig does not provide a very effective blow off.  With EXAIR’s  engineered nozzles the air can be kept at higher line pressure and still meet or exceed the OSHA standard. Higher pressure equate to higher velocity and more force upon your application. Because of this, we can solve the application, keep compressed air to a minimum, and keep safety a top priority.

Air Nozzle and Safety Air Gun

EXAIR nozzles are safe, provide very effective blow off, and reduce compressed air consumption. By design they produce output flow up to 25 times the compressed air consumed. For more information or help with your application call our application engineers at 1-800-903-9247

Joe Panfalone
Application Engineer
Phone (513) 671-3322
Fax (513) 671-3363
Web: www.exair.com
Twitter: www.twitter.com/exair_jp
Facebook: http://www.facebook.com/exair