How Do I Estimate The Cost Of My Compressed Air?

Saving Money and Compressed Air

One of the best features of EXAIR products is the engineering behind the designs.  For example, our nozzles are designed to generate a maximum force possible per CFM of compressed air.  This means that the compressed air consumed by the device is at its maximum possible efficiency, which in turn reduces the compressed air demand in an application, reducing the cost of the solution.

But, how do you determine the cost of a compressed air driven product?

Step 1 – Quantify flow

The first step to determine compressed air cost is to quantify the flow rate of the product.  Most pneumatic equipment will have a spec sheet which you can reference to determine air consumption, but open pipe blowoffs and drilled holes won’t provide this type of information.  In those cases, or in any case where the compressed air flow is unknown or questionable, a compressed air flow meter can be used.  (We have Digital Flowmeters for use on compressed air piping, with or without data logging capability, and with serial or wireless communication.)

Step 2 – Calculate flow over time

Once the flow rate is known, it’s time to determine flow rates per day/week/month/year.  To do so, we will perform a bit of short and easy math.  What we will do, is use the known flow rate of the device, and multiply this by the total time in operation to determine daily, weekly, monthly, and annual usage rates.  For example:

A 1/8” open pipe blowoff will consume 70 SCFM.  In an 8 hour shift there are 480 minutes, resulting in a total consumption of 33,600 SCFM per 8 hour shift.

Step 3 – Determine cost

With a quantified flow rate, we can now determine the cost.  Many facilities will know the cost of their compressed air per CFM, but for those which don’t, a cost of ($0.25/1000 standard cubic feet) can be used.  This value is then multiplied by the total compressed air consumption from above, to give a quantified dollar amount to the compressed air driven device.

Using the flow rate from above:

If (1) shift is run per day, 5 days per week and 52 weeks per year, this open pipe blowoff will have an annual cost of $2,184.00.

Step 4 – Compare

At this point we know the real cost of the device.  The benefit to quantifying these flow rates, is when making a comparison to an alternative such as an engineered solution.  For example, if we were to replace the open pipe blowoff reference above with an EXAIR 1010SS 1/8” NPT nozzle, the compressed air demand would drop to 13 SCFM, yielding the following flow rates and costs:

If (1) shift is run per day, 5 days per week and 52 weeks per year, this open pipe blowoff will have an annual cost of $405.60.

Comparing these two solutions on an annual basis yields a difference of $1,778.40.  This means an air savings which correlates to $1,778.40 per year – just by replacing ONE open pipe blowoff with an engineered solution.  Replacing multiple open pipe blowoffs will yield repeat savings.

The 1010SS EXAIR Micro Air Nozzle

Determining the cost of a compressed air driven device can clarify the impact of a truly engineered solution.  If you have an interest in determining the cost of the compressed air devices in your facility, contact an EXAIR Application Engineer.  We’ll be happy to help.

 

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

The Power of Optimization

When you take your car into the service shop for an oil change, you notice that they will check all the fluids, air filter, the belt, tire pressure, etc.  The reason that they do this is twofold.  They want to make sure that your car will not run into any potential safety problems and to get the maximum performance from your vehicle.

EXAIR has been in the forefront of selling efficient, safe, and effective products since 1983.  In that time, we wanted to become more than a manufacturer.  We wanted to also provide a way to improve your compressed air system.  We developed this into our Optimization product line.   By design, these products are also twofold.  First, it shows the importance of saving compressed air, improving safety and refining processes.  Second, it helps to improve the performance of your compressed air system to get the most out of it.   I am going to discuss a few points of each product below:

Electronic Flow Control

Electronic Flow Control:  The EFC is designed to save compressed air.  If there are any time gaps in a blowing or cooling application, then we should turn off the compressed air.  The EFC is a miniature timing PLC that uses a photoelectric sensor to turn off the compressed air.  By using less compressed air, you will be able to save a bunch of money.  This is why the light bulb in your refrigerator goes off when the door is closed (or does it?).

Digital Sound Level Meter

Digital Sound Level Meter:  This device is used for measuring sound level.  For safety reasons, OSHA sets a decibel ratings for work environments.  The Digital Sound Level Meter is calibrated to a NIST standard to accurately measure noise level.  If you have poor nozzles on your air guns or open pipes for blow-offs, you could be violating the OSHA standard 29CFR 1910.95(a), which will result in fines.  EXAIR products are designed to meet this standard.

Ultrasonic Leak Detector

Ultrasonic Leak Detector (ULD):   Many compressed air systems have leaks.  If they go unnoticed, this will affect the overall capacity of the compressed air system as well as costing a lot of money.  Leaks can account for one-third of your compressed air output.  The ULD can find these leaks to optimize your system and to improve the “health” of your compressor.

Digital Flowmeter

Digital Flowmeter (DFM):  If you can measure flow, then you can find many ways to optimize.  The DFM is able to show and record the amount of flow that you are using in your compressed air system.  You can also use the Digital Flowmeters to find leaks, diagnose pneumatic problems, and use the recorded information for preventative maintenance.  In comparing to an open pipes or competitive products, you can easily see the air savings with EXAIR products and easily determine the payback period (which is generally in weeks).  EXAIR does offer options that are wireless, serial, or USB type of recording, so, you can continuously monitor your compressed air system 24/7.

With the Optimization products, it can “service” your compressed air system; so that, you can get the most from it.  It can save you money, make your system safe, and keep things pneumatically maintained.  If you would like discuss one or more of these products, you can contact an EXAIR Application Engineer for more details.

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

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