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No one doubts the importance of compressed air systems. In industrial applications from pharmaceutical to food & beverage, they run the whole show.

But companies would do well to remember that they鈥檙e never locked into one compressed air system. In fact, most plants that use compressed air could probably do with a fresh set of eyes on their system: They might find they鈥檙e not running it as efficiently as they could be 鈥� with the result being wasted energy and higher bills.

Local electricity rates, hose length, machine size, air use requirements of your tools, altitude, temperature, and relative humidity of your work environment all affect energy efficiency 鈥� and therefore the cost of your air compressor system. Chances are you can make at least one or two improvements that will reduce costs in the long run.

Why Does Compressed Air Cost Matter?

When it comes to industrial environments like bottling plants and pharmaceutical facilities, compressed air systems typically consume more energy and than anything else. The U.S. Department of Energy released a study showing that between 10-30% of industrial facility energy costs go toward compressed air.

It makes sense, then, that the lifetime energy cost of energy consumed is far more expensive than the up-front cost of the compressor itself. In fact, 80% of the total cost of your compressed air system will be the electricity it consumes.

For industrial plant managers looking to cut costs, there鈥檚 no better place to start than the compressed air system.

How to Calculate Your CompressED Air Costs

We use a simple formula for calculating compressed air cost.

Say that you鈥檙e trying to figure out the cost of a 200 hp compressor with a full-load bhp of 215 hp, and you run it for 5,000 hours a year. If your electric rate is $0.07 dollars/kwh and your motor efficiency is 95%, the cost would be as follows:

This formula assumes that you鈥檙e always operating the compressor at full load. To achieve a more realistic calculation, modify the equation to account for partial load. Multiply by the percentage of time the compressor spends at a partial load, as well as by the percentage of the full load.

If you run the above compressor at 40% of full bhp for 50% of the time at 90% efficiency, here鈥檚 what the cost would look like:

Not sure where to find the numbers in the equation? Here鈥檚 you guide:

• Motor bhp: You鈥檒l find your machine鈥檚 rated horsepower listed on the machine itself, or in the owner鈥檚 manual.
• .746: This is a constant number.
• Annual hrs of operation: Add up the number of days per year your facility is operational, and multiply it by the number of hours your facility runs on an average workday.
• Electric rate: Look at your electricity bill. Your utility will tell you what they鈥檙e charging you per kilowatt-hour. It鈥檚 about 12 cents per kwh across the United States, but it varies from region to region. It鈥檚 about 11 cents in Indiana, and about 21 cents in New York.
• Motor efficiency: To get this number, look at the Compressed Air and Gas Institute鈥檚 (CAGI) . Then you鈥檙e going to want to download the data sheet for your specific machine (), and look on row 7. You鈥檒l find a number expressed as a percentage next to 鈥淒rive Motor Nominal Efficiency.鈥� This is the number you want.

Slashing Your Energy Bills

Knowing the cost of your compressed air is the first step to increasing energy efficiency and lowering your bills.

If you鈥檙e looking to lower your energy bills and increase ROI, 皇冠体育227 will find an air compressor to help you do just that. 皇冠体育227鈥檚 Optima and Maxima series feature best in class efficiency kw/100 cfm ratings, and with our proprietary rotary vane technology, they are more quiet and require lower-maintenance too.