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Heatless Compressed Air Dryer Principles

Posted by IAP on 11/1/2016
From Compressed Air Best Practices

The heatless dryer process was born out of necessity by Dr. Charles W. Skarstrom in 1956 at the Esso refinery in Bayway, New Jersey 1. Dr. Skarstrom, who had worked on the Manhattan Project during World War II, was developing an automatic gas analyzer for his laboratory when the plant’s desiccant air dryer failed. The dryer’s regeneration heater burned out. Acting on the theory of heater-less regeneration, Dr. Skarstrom solicited the assistance of Virgil Mannion and Robert C. Axt, adsorption system engineers, and together they shortened the dryer cycle time sufficiently to conserve the heat of adsorption and continue the drying process without an external heat source. Based on the successful operation, the process was patented 2. Dr. Skarstrom’s laboratory observations are preserved in his patent issued in 1960, and in the 1972 CRC Press publication 3. He discovered that to dry compressed air, the following principles must be applied for the process to continue.

The Importance of the Systems Approach for Compressed Air Analysis

Posted by IAP on 10/10/2016

The Importance of the Systems Approach for Compressed Air Analysis

From Compressed Air Best Practices

The component-level approach is often taken to improve a compressed air system, and it typically involves very specific, short-payback, and easily quantifiable measures (i.e. replacing an old compressor with a more efficient one). The Department of Energy and the Compressed Air Challenge, however, advocate a systems approach as the best practice for analyzing and improving a compressed air system. 

Understanding Pressure Drop

Posted by IAP on 11/7/2017

From The Compressed Air Challenge

One of the many issues that can affect compressed air system efficiency and pressure stability is pressure drop. “The first and foremost complaint I normally hear from an operator or production area is, ‘I don’t have enough pressure’,” says Frank Moskowitz, one of CAC’s advanced management instructors. 

Managing High-Volume Intermittent Demands

Posted by IAP on 9/27/2017

Managing High-Volume Intermittent Demands

From the Compressed Air Challenge

In many industrial plants there are one or more applications with intermittent demands of relatively high volume. One example is the use of dense phase transport systems to convey the cement. Dense phase systems can cause severe dynamic pressure fluctuations affecting quality of the end product in a plant. 

Compressed Air System Control Strategies

Posted by IAP on 8/16/2017

From U.S. Department of Energy

Improving and maintaining compressed air system performance requires not only addressing individual components, but also analyzing both the supply and demand sides of the system and how they interact, especially during periods of peak demand. 

Operating at Optimum Energy Level

Posted by IAP on 6/21/2017

Every air system reaches a balance between the air compressor’s supply into the system and the downstream demands that use the air. The energy input from compressing the air equals the energy used plus the system’s inherent inefficiencies. Any more or less energy goes into or is released from storage. Every time there is a change to either side of the equation the system rebalances at a new point.