End Uses

Magnetic Pickups Reduce Compressed Air Demand at Automotive Plant

By Nasr Alkadi, Ph.D., CEM, CSRM, Strategic Energy Management Consultant and Coach, CLEAResult

This article focuses on a project to replace vacuum cups with spring-return magnetic pickups for handling ferrous metal parts at an automobile assembly plant in Missouri. The application is most familiar in automotive stamping and body shop operations, but the lesson applies to any plant using vacuum cups to grab steel blanks, panels, brackets or formed parts. The original equipment in this case study used vacuum cups served by venturi devices.

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OSHA-Compliant Air Guns: Safety, Performance and Industrial Cleaning

By Troy Dreier, Senior Editor, Compressed Air Best Practices® Magazine

Industrial air guns are essential for cleaning manufacturing equipment and production areas, but improper selection or misuse can create serious safety and compliance risks. This article explains OSHA Standard 1910.242(b), the engineering behind OSHA-compliant safety air guns, and how nozzle design, thrust, noise control, and operator training help facilities improve worker safety while maintaining effective industrial cleaning performance.
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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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Advanced Compressor Technologies Solves Oversupply Problem

By Troy Dreier, Senior Editor, Compressed Air Best Practices® Magazine 

A Southern Indiana office furniture plant was wasting hundreds of dollars per day because its oversized VSD air compressor could not turn down low enough to match reduced demand after a shift to metal fabrication. To avoid drive faults, the plant vented compressed air to create false load. The audit revealed 300 cfm of wasted air—about $400 per day—and led to a redesigned system using a fixed-speed compressor for base load and a VSD unit for trim. The new configuration eliminated artificial demand and cut compressed air energy use in half, setting the stage for further savings through advanced sequencing, storage, and demand control.
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Improve Process Efficiency and Reduce Energy Use with Compressed Air Monitoring

By Hendrik Priemer, Product Manager IIoT Applications, Machine Automation, Emerson 

Without compressed air monitoring, up to 30% of the compressed air generated goes to waste. This waste occurs for several reasons, including leaks caused by failures at joints and tubes, exposure to vibration and normal component wear, and the suboptimization of machines and devices. Continuous monitoring capabilities allow operators to detect leaks and other anomalies in their early stages. By addressing pneumatic issues before they can grow, companies can reduce compressed air use by 20% to 30%.
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Crimping Pipe Nozzles for Improved Efficiency

By Murray Nottle, Working Air System Engineer, The Carnot Group

Blowing a jet of compressed air at an object is a common but “poor” use of compressed air. Often the blowing nozzle is a piece of pipe on a hose with a manual valve for control. This quickly solves a production problem when a more efficient factory made nozzle is either physically too big, too expensive, or not on site when needed. Retrofitting with factory made nozzles is often ruled out by for the same reasons, and the time needed by managers and fitters to change a nozzle for often little gain in production.
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Compressed Air Audit Details Two Energy Saving Projects for Maintenance Teams

By Don Van Ormer, Senior Auditor, APenergy

In this article, we will provide detail on the characteristics of the baseline system and then share the energy-saving work identified in two projects. These two projects represent work which can be performed by the maintenance teams in every plant. These are also project opportunities we find in almost every plant we visit. The two projects are to (1) repair/replace condensate drains wasting compressed air and (2) to perform a compressed air leak survey.
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Compressed Air System Design for Dust Collectors

By Hank van Ormer, Technical Director, AP Energy

The dust is collected on the bag or fingers, and when the cake of dust is of appropriate thickness and structure, a pulse or pulses of compressed air hits or shocks the bag and knocks the cake off. This pulse may sometimes be accompanied by physical shaking and even reverse air flows, depending on design.
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Achieving Sustainability Targets by Optimizing Compressed Air Use

By Jan Edler, IIoT Manufacturing Applications Leader, Emerson, and Michael Britzger, Senior Manager IIoT Engineering & Innovation, Emerson

By monitoring compressed air consumption using smart pneumatic sensors, companies can reliably reduce energy use and emissions. The digital transformation of pneumatic systems is one critical way that companies can improve operational sustainability. Advanced airflow-sensing technology provides compressed air monitoring and valuable insights that allow companies to control and significantly reduce the energy used to produce compressed air as well as related carbon emissions.
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Commercial Bakery Compressed Air Audit Optimizes the Constituents of Demand

By Mike Lenti, Senior Auditor, Compressed Air Consultants

The current cost to operate the compressed air system is $139,100 annually, and the proposed measures will reduce it by $50,700 annually. The proposed cost to complete the measures is $47,600 providing a simple payback of 11 months. The cost included in the Action Plan includes engineering, project assistance, services to maintain the gains, and a 10% contingency.
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Don’t Assume Compressed Air Demand Reductions Provide Proportional Energy Savings

By Paul Edwards, President, Compressed Air Consultants

The purpose of this article is to show there isn’t always a proportionally linear relationship between what happens with flow reductions on the demand side of a compressed air system - and what happens with the energy consumption in the air compressor room. Optimizing an entire compressed air system requires precise knowledge of the supply side, how compressed air is used in the process itself and how those two relate together.
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Safe and Efficient Compressed Air Nozzle Food Applications

By Jordan Shouse, Application Engineer, EXAIR Corporation

There are a tremendous variety of unique and creative ways people in the food industry have overcome their need for compressed air blowoffs used for cleaning, drying, cooling, conveying and overall processing. You may have seen some of them yourself. It is not uncommon to view open copper tubes, pipes with a crushed end, plugs or caps with holes drilled into them, modular flex coolant lines or nozzles designed for liquid application but blowing air.
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Are My Pulse Jet Dust Collectors Wasting Compressed Air?

By Kevin Cardwell, Airdusco Engineering and Design Services

Pulse jet dust collectors are common air/material separators in the food industry serving as dust collectors, bin vents, and pneumatic conveying filter/receivers. The biggest complaint I’ve heard from plant managers and plant engineers about these is that “these collectors don’t make us any money”. While that is true, they can COST a plant a significant amount of money if they aren’t maintained. Wasted compressed air is one of the worst offenders, as it not only costs the plant in energy costs associated with creating and conditioning the air, but also in premature bag failure from improper cleaning, production downtime, and inefficient dust collection leading to increased housekeeping requirements, and other many issues.
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Dust Collector Pilot Program Points to 16 GWh of Energy Savings at Imerys Minerals Processing Facilities

By Mike Grennier, Compressed Air Best Practices® Magazine

For Imerys S.A. there’s little question about the importance of managing dust collection systems it uses to control and reduce harmful particulates in its worldwide minerals processing facilities. And now there’s zero doubt about the tremendous energy savings it stands to save by reducing the amount of compressed air needed for these same dust collectors.
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Compressed Air Manufacturers and Distributors Rise Above the COVID-19 Crisis

By Mike Grennier, Compressed Air Best Practices® Magazine

As the crisis unfolded, manufacturers and distributors of compressed air and vacuum systems took the necessary steps and precautions using guidance from the Centers for Disease Control and other agencies to minimize the spread of the virus, while continuing to support customers. At all times the top priority was the safety and wellbeing of employees and their families, as well as partners and customers.
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IUE-CWA Labor Union Members Embrace Energy Treasure Hunts

By Mike Grennier, Compressed Air Best Practices® Magazine

Manufacturers familiar with the U.S. Environmental Protection Agency (EPA) ENERGY STAR® Energy Treasure Hunts initiative know it’s a great way to save energy and natural resources – as long as it’s done right – which is why some are turning to perhaps their best asset to achieve success: their unionized workforce.
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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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Outsourcing Compressed Air Gives GKN Sintered Metals Peace of Mind

By Jason Onyshko, Total Equipment Company

With an eye toward strengthening its competitive edge, GKN opted for a new approach for the compressed air it uses to power metal molding machines in addition to a variety of other applications at its manufacturing facility. After careful analysis and planning with the Total Equipment Company located in Coraopolis, Pennsylvania, GKN opted to move beyond its aging compressed air system – and instead – outsource compressed air as a utility. Doing so allowed it to free up valuable floor space, while also achieving peace of mind since it can now count on a fixed cost for a reliable compressed air supply for years to come.
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Capital & Maintenance Cost Avoidance When Metal Grinding Loads Rise

By Hank van Ormer, Air Power USA

Plant personnel had experienced ongoing problems with its process grinder performance due to unstable compressed air pressure. This created potential problems in terms of product quality. Grinders do not work properly without the proper pressure. Additionally, plant staff wanted to address these concerns, prior to a proposed 30% increase in production, and suggested raising the header pressure from the current operating pressure of 98 psig to 125 psig. The thought behind this was if the pressure from the header to the grinder process was dropping to 63 psig, then raising the pressure to the process would give the grinders enough pressure to work through higher peak production times.
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Bearing Cooling: A Common Misapplication of Compressed Air and How to Fix It

By Paul Edwards, Compressed Air Consultants, Inc.

One observation I’ve made from 30 years of working with compressed air systems is to never underestimate the ingenuity of plant personnel when it comes to misapplying compressed air. We see something new in virtually every plant we visit, but one of the more common problems we encounter involves the use of expensive air for bearing cooling.
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Reviewing Dust Collectors and Nitrogen in a Food Manufacturing Plant

By Hank van Ormer, Van Ormer Consulting

This major food manufacturing plant in the Midwest uses compressed air and onsite nitrogen generation to operate multiple snack production and packaging lines. The plant spends an estimated $430,344 annually on energy to operate its compressed air system based on an average rate of 4.5 cents per kWh.
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Missed Demand-Side Opportunities Part 5 - Think Inside the Box to Achieve Savings with Cooling of Control Enclosures

By Hank van Ormer, Contributing Editor

In this ongoing column, we share insights into technologies that offer the opportunity to affordably and easily lower compressed air use and generate energy savings – all while achieving relatively quick payback. But finding these technologies on the production floor isn’t always easy or straightforward. In fact, there are many times when a technological solution is far less than obvious. Such is the case with cooling of control enclosures, which represent a significant area for high-energy savings with little upfront investment. Here is some out-of-the-box thinking… check that… inside-the-box thinking… for optimizing control of enclosure cooling and coming out ahead.
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Big Improvements at a Small Sawmill

By Ron Marshall, Marshall Compressed Air Consulting

Spruce Products Limited operates with five separate compressed air systems in their various buildings. A few years ago a sharp-eyed air compressor service representative noticed the screw compressors on site had less than optimal loading to operating hours ratios. Recognizing this was a problem, he suggested the company get in touch with their local power utility for a free compressed air scoping assessment. As a result, SPL has optimized two of their compressed air systems to-date, saving significant operating costs. One system is operating at 86% less energy consumption than previous levels.
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