Industrial Utility Efficiency

Compressor Controls

Hitting the Gas on Efficient Compressed Air Delivery at Hitachi Astemo

By Compressed Air Best Practices® Magazine

Hitachi Astemo’s efficiency gains will turn into significant cost savings. In this article we outline the savings reported by the client since the changeover was complete. It shows a sizeable reduction in energy costs, air compressor energy costs and maintenance costs to the tune of 21.95%, 24.14% and 24.14%, respectively. Total operating costs to date have dropped from $1,277,394 to $941,959 with the new system a decrease of 26.25%.

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The Industrial Sustainability 2025 Best Practices EXPO & Conference Show Report

By Bill Smith, Compressed Air Best Practices® Magazine

Compressed Air Best Practices® Magazine launched its first event in Europe, the Industrial Sustainability Best Practices EXPO & Conference, in June 2025 in Barcelona, Spain. Designed to educate and connect factories and specifying engineers on the optimization of industrial compressed air, vacuum and cooling water systems, the event featured 12 hours of conference sessions, exhibits and the first Compressed Air Challenge training to take place in Europe.
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The Effect of Increased Storage Capacity on Load/No Load Air Compressors

By Frank A. Melch, Vice President of Sales & Marketing (ret.), Zorn Compressor & Equipment

Fixed speed, lubricated, rotary screw air compressors offer three different part-load control methods: inlet modulation, load/no load and variable displacement. Over the years, load/no load has become the predominant control method offered by fixed-speed air compressor manufacturers.
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How IoT and AI Transform Compressed Air System Management

By Jayme Leonard, Atlas Copco Compressors

In the rapidly evolving landscape of industrial automation, the integration of internet of things (IoT) and artificial intelligence (AI) is reshaping production and utility management. Compressed air system management stands out as an area undergoing significant transformation. Compressed air systems are critical in many industries, serving as a power source for tools, machinery and various processes.
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A Quarter Century of Positive Change at Automotive Supplier’s Mexico Plant

By Mike Grennier, Compressed Air Best Practices® Magazine

Today, leading automotive makers rely on the plant for parts used to produce some of the most sought-after vehicles. Additionally, the nearly 600,000-square-foot manufacturing facility achieved ISO 50001 certification in 2021. Here’s a look at how the plant grew for the better over more than 25 years – and its compressed air system along with it.
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Remote Monitoring Takes Off for Aerospace Manufacturer

By Nicolas De Deken, President, ENERGAIR

In the absence of the control system, the air compressors were loading and unloading according to pre-set pressure bands, which forced the system to operate at higher pressures and run inefficient combinations of compressors in order to effectively match air demand. When switched on, irrespective of air demand, the control system was able to control all compressors on a single, tight pressure band and efficiently match output with demand.
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Wonderful Pistachios & Almonds™ Optimizes Piping and Air Compressor Automation

By Tyler Costa, ALD, Inc.

The Wonderful Pistachios and Almonds campus in Lost Hills, California is a manufacturing facility that processes and packages pistachios and almonds for the consumer market. Food processing requires extensive use of compressed air to control multiple applications ranging from actuators, valves, optical sorters, packaging equipment and plant maintenance operations. The campus has its peak season during harvest in late August/early September, but processing and packaging operations take place year-round.
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AZEK Compressed Air Project Enhances Reliability While Saving Energy

By Airleader North America, and Dave Suder, Industrial Air Centers

The AZEK Company is a producer of durable and low maintenance building materials, and like many manufacturers, it found its compressed air system to be time consuming and expensive to keep maintained. But that changed after the company replaced its outdated and faulty compressed air system with a new design that includes technically advanced air compressors, dryers, receiver tanks – as well as controls to provide better control of the entire system and achieve optimal performance.
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Chemical Plant Compressed Air Audit Using Cloud-based Software

By Rok Trelc, CALMS Air Inc.

A large chemical plant in Celje, Slovenia, planned to retrofit a kiln used to produce titanium dioxide. To make space for the new equipment related to the retrofit, the plant needed to relocate its high-pressure compressed air system feeding an adjacent pressing process used to dry the material before firing it in the kiln. However, a comprehensive compressed air audit using cloud-based software showed the plant did not need to relocate the system.
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Networked Air Compressors Operate in Harmony at Automotive Manufacturer

By Stephen Parry, Bay Controls

When an automotive company added a new 200-horsepower (hp) rotary screw air compressor and accompanying dryer to a satellite building at its Chicago-area assembly plant, it needed a cost-effective way to integrate the equipment into its existing compressed air network. Doing so would allow plant personnel to easily monitor the air compressor’s performance and ensure it operates in harmony with the plant’s centrifugal air compressors. Importantly, it would contribute to efficient and reliable air compressor operation at all times.
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ISO 50001: How Manufacturers Can Achieve a Low-cost and Low-carbon Future

By Graham Coats, Energair

For an organization to prove that it meets the standard it has to undergo a management system audit, either internal or external. The question, therefore, is how can those utilizing compressed air effectively evaluate their assets’ performance as part of an ISO 50001 energy management system and, in doing so, grow their bottom line and minimize their negative environmental footprint.
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Is Your Controller a Blast From the Past?

By the Compressed Air & Gas Institute

Advances in phone technology dramatically improve their function and our experience. More storage, faster speeds, enhanced communication options, bigger and brighter display….and so on. As a result, today’s phones are significantly more powerful – improving our productivity and changing our lives. As for the technology laggards, obsolescence eventually prompts change. Repairing or replacing parts and accessories on the old phones is an increasing challenge. Eventually they have to succumb to technology.
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Compressed Air Guidelines for Varying Production Levels

By Paul Humphreys, Atlas Copco Compressors LLC.

Companies will experience periods of increased production, as well as periods of slower or stopped production. It’s the nature of being in business. Understanding the implications of these business shifts for compressed-air installations (the powerhouse behind a facility’s production) is key for ensuring that air compressors remain functional and efficient. Here are guidelines to ensure your facility’s compressed-air system operates at top performance, no matter the speed of production.
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Tier 1 Automotive Supplier Saves Energy Upgrading Centrifugal Air Compressor Controls

By Stephen Parry, Bay Controls

A Tier 1 automotive supplier was concerned its compressed air system was not operating as efficiently as it could be. The situation called for a site visit and metering and evaluation of the company’s air compressors to generate a representative data sample that accurately captured the compressed air needs during typical production and non-production periods.
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SHOW REPORT: The 2019 Best Practices EXPO & Conference – Another Success!

By Mike Grennier, Compressed Air Best Practices® Magazine

The event brought together technology experts, systems assessment professionals, and manufacturing leaders – all of whom shared best practices and ideas manufacturing plants can use to save energy, improve sustainability initiatives and increase the overall reliability and quality of on-site utilities.
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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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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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Chemical Packaging Plant Shaves 41% Off Annual Electric Bill with Compressed Air Energy-Saving Measures

By Ron Marshall, Marshall Compressed Air Consulting

A chemical packaging facility had done everything right when they last upgraded their compressed air system a few years ago. They installed a Variable Speed Drive (VSD) air compressor and implemented other energy efficiency measures, but plant expansions caused increased system demand, which exceeded the capacity of the system. The packaging lines were now seeing low pressure, causing shut downs in production. And projections showed plant demand would increase even further.
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Profile: Case Controls and Centrifugal Air Compressor Management

Compressed Air Best Practices® interviewed Lou York (Director), Devin Sullivan (Vice President of Engineering) of Case Controls.

By Mike Grennier, Compressed Air Best Practices® Magazine

Often, multiple centrifugal air compressors are set up to simply react to air demand, which requires the system to not only meet the new demand, but also make up for air depleted in the main header. This typically results in too much supply, which results in bypassing the air to atmosphere. The result is wasted energy use.
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1888 Mills Saves $140,000 in Energy Savings and Maintenance Costs

By Ian Barnard, Ingersoll Rand® Compression Technologies and Services

After getting its start manufacturing cost-effective products to the healthcare industry, 40 years later, 1888 Mills has become the fourth largest towel manufacturer in the world, and the largest towel manufacturer in the U.S. With facilities in the United States, Pakistan and Bangladesh, 1888 Mills’ towels are used in almost every corner of the world. 1888 Mills is recognized as a leader in innovation in the textile industry and produces 176,000 pounds of towels per week.
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Plastics Plant Saves 55% in Energy with VSD Air Compressor and Sequencer

By Ron Marshall, Marshall Compressed Air Consulting

The plant produces both molded and blow molded plastic parts on a 5 day per week, three shift schedule. Production and maintenance sometimes occurs on weekends, occasionally requiring the air compressors to run on a 24 x 7 basis so the practice was to leave the compressed air system always pressurized. The system consisted of three modulating lubricated screw compressors one sized at 150 hp and the others 125 hp (3 units), each controlled with their local compressor controllers.
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Understanding Controls for Multiple Centrifugal Air Compressor Systems

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

Load-sharing is an important part of a multiple centrifugal-compressor master control system. It minimizes blow-off based on the available turn-down. In addition, remote start-stop saves more energy if load floats between different ranges. Finally, adding a screw compressor and implementing a hybrid control system might save the most energy and provide the best back-up. In any case, a well-instrumented system allows engineers and operators to assess, optimize and tune the system.
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Master Controls for Multiple Air Compressor Systems with VFD Compressors

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

When a system has the right combination of VFD and base-load air compressors, how do you coordinate their control? What tells the air compressors to run and load, to have just enough (or no) base-load air compressors and a VFD running, all the time air is needed? Appropriate master controls are needed. These controls are often called “sequencers” or “master control systems”.
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