Industrial Utility Efficiency

System Assessments

Thought Leaders on System Optimization Past & Future

Edited by Troy Dreier, Senior Editor, Compressed Air Best Practices® Magazine

We asked a hand-selected list of original equipment manufacturers, independent compressed air system sales and service companies, manufacturing plants and independent system auditors to share their thoughts, highlighting the changes they’ve seen over the past 20 years, then predicting what the next 20 years will bring.

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Eliminate the Cost of Artificial Demand with Proper Storage and Piping

By Hank van Ormer, Air Power USA

This article reviews the benefits and design considerations of controlling system pressure from the air compressor room to the production headers and selected production processes and areas. Over the last several decades, the phrase “demand-side control” has become the generic term to describe establishing a “flat line” header pressure using proper storage and an appropriate pressure regulator, or “pressure flow controller.” Use of a demand-side controller to control pressure and flow can be implemented at the entry to the production area header(s) and at selected production areas or processes.
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Integration: Should Compressed Air Monitoring Be Combined with Control?

By Tim Dugan, P.E., Compression Engineering Corporation

Maintenance is the customer of controls and energy engineering is the customer of monitoring. And I discussed potential problems that can occur when combining monitoring and control in the same system. In this article, I will get more specific about building practical systems that address both controls and monitoring.
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SumiRiko Tennessee Saves Energy & Boosts Sustainability with Compressed Air System Upgrade

By Mike Grennier, Compressed Air Best Practices® Magazine

In a strategic approach to improving its management of compressed air, the company initiated an upgrade of its compressed air system at its Midway plant. In so doing, SumiRiko Tennessee saves 2.1 million kWh and \$100,000 in energy costs per year at the plant.  Additionally, lower energy use resulted in the reduction in CO2 of 800 tons per year. With a utility rebate, the project paid for itself within two years.
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Control Strategies for Efficiently Operating Multiple VFD Air Compressors

By Ron Marshall, Marshall Compressed Air Consulting

By far the most important development in the world of screw type air compressors has been the introduction of variable speed control using electronic variable frequency drives (VFD’s). Systems that run with at least one air compressor at part load can almost always operate more efficiently if a well-controlled VFD is added to the system. But what if a system has two or more VFD units? This article discusses the challenges in controlling multiple VFD air compressors with some suggested solutions.
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Don’t Overlook Tubing Volume with Manifold-Mounted Pneumatic Valves To Conserve Energy

By John Martin, SMC Corporation of America

The advent of manifold-mounted, plug-in pneumatic valves has been a boon for machine builders. It allows them to mount complete valve packages in a safe and secure location on a machine. Using a D-sub connector, serial interface module, or similar single-point wiring system, all of the electrical control outputs can feed into one location on the manifold, greatly simplifying the wiring.
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Use Baseline Measurements to Improve Compressed Air Supply Performance

By Tom Taranto, Data Power Services, LLC.

Baseline measurements include flow, power, pressure, production output, and other relevant variables impacting compressed air use. These data evaluate trending averages to develop Key Performance Indicator (KPI) and Energy Performance Indicator (EnPI) parameters and establish base‑year performance. The focus of this article is the application, evaluation, and analysis of baseline measurements to provide information necessary to improve Compressed Air Supply Efficiency.
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Start with Monitoring to Achieve Compressed Air System Efficiencies

By Parker Hannifin

Compressed air represents one of the largest opportunities for immediate energy savings, which accounts for an average of 15% of an industrial facility’s electrical consumption. In fact, over a 10-year period, electricity can make up 76% of the total compressed air system costs. Monitoring compressed air usage, identifying compressed air waste and inefficiencies, and making investments in new compressed air equipment – including piping – are tangible ways businesses can cut their operating costs by lowering their electricity bill.
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Automaker Saves $600,000 Yearly In Energy Costs & Improves Compressed Air System Reliability

By Pascal van Putten, VPInstruments, and Tyler Costa, ALD, Inc.

The project, which also involved the addition of a booster air compressor and receiver tank – along with the installation of an important pressure control valve – gives the automaker the ability to run fewer centrifugal air compressors during peak production. In so doing, the plant saves nearly 6.1 million kWh and more than \$600,000 per year in energy costs. The project also qualified for a \$369,374 rebate from the local utility, resulting in a six-month project payback – all while improving system reliability.
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A Tale of Two Cities - Comparison of Fixed-speed and VSD Compressed Air Systems

By Ron Marshall, Marshall Compressed Air Consulting

The compressed air system at the mail sorting facility has been in service since the 90’s. Two older 50-horsepower (hp) air-cooled fixed-speed lubricated air compressors are housed in the equipment room of the facility. The air compressors duty cycle alternates between one another on a set schedule. A 240-gallon wet storage receiver is used to help with air compressor control, with the air flowing through the receiver to a non-cycling refrigerated air dryer and system filters before finally being passed to the plant.
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Compressor Controls

Egger Modernizes Its Compressed Air System for the ESG Era
Wood-based materials manufacturing plant transformed its compressed air system from an invisible
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Piping Storage

Sizing Compressed Air Piping to Manage Pressure, Flow and Velocity
Efficient compressed air distribution depends on proper piping design to balance flow, pressure and
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End Uses

Improve Process Efficiency and Reduce Energy Use with Compressed Air Monitoring
Without compressed air monitoring, up to 30% of the compressed air generated goes to waste. This
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Pressure

High-Altitude Mining and Steel Production in Peru
Before CAGI data sheets were created, air compressor distributors and their customers could only go
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Air Treatment/N2

Selecting the Appropriate Nitrogen Gas Purity Level for Your Application
Producing nitrogen locally is an excellent way to reduce nitrogen costs and ensure a continuous
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Leaks

Hyster-Yale Sustainability Recognized by North Carolina DEQ
Hyster-Yale’s Greenville, North Carolina, plant reduced compressed air waste through employee-driven
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Pneumatics

Food Safety Design Tips for Pneumatic Systems
Current Good Manufacturing Practices (cGMPs) under FSMA CFR Title 21 117.40 is the cornerstone of
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Vacuum/Blowers

The Business Case for Air Compressor Rentals and Air-Over-the-Fence
There is no single right approach to putting the necessary volume and pressure of air in the pipe to
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