Practical Hints

Greater savings due to efficient compressed air & blower systems
by Imtiaz Rastgar.

Ahis editorial highlights great savings made by the users of compressed air systems when users are able to evaluate and execute the following cost-saving opportunities and thereby increase their profits significantly.

Compressed Air System

Fix the leaks:  The companies should not feel obliged to raise the barometric pressure by allowing compressed air to leak from the system. Leaks are costly in terms of the power consumption and divert compressor capacity to support waste. An experienced compressed air distributor can help establish detection and fix process that can facilitate greater savings.

Regulate pressure at point of-use: Applying pressure in excess of your operations needs causes artificial demand which is nothing more than a fancy leak. It is understandable to think higher pressure is better, but all this really does is cost more when it comes to the electric bill.

The Compressed Air System is Reactive: The compressors respond to air that has already been removed from the system. Capacitance, that is, air storage, in the form of properly sized and placed receivers will smooth the volatility and allow compressor reaction to be appropriate and less costly to the demand event.

The compressor system efficiently tracks process demands: Inefficient turndown, that is, compressor adjustment to increases and decreases in air demand, means that one is paying more per unit of compressed air delivery and needlessly increasing the cost of production.

Proper maintenance preserves efficiency and enhances reliability: Postponing or neglecting routine maintenance is an unwise and costly practice.

The compressed air challenge best practices handbook states: “Excellent maintenance is the key to improved reliability of the compressed air system; a reduction in energy cost is an important and measurable by-product.”

Blower Packages

The Right Technology: The blower technology has come a long way, as energy consumption has become more important. The continued innovation has led to more efficient technologies to save energy and save money. Gardner Denver provides various technology styles including bi-lobe, tri-lobe, twisted tri-lobe and screw technologies. Each technology offers its own specific advantages. Gardner Denver’s patented 3×5 helical screw rotor design is most efficient positive displacement blower technology available.

Correct Sizing: In almost all cases, there are numerous blowers that can perform your application parameters. While positive displacement blowers have a wide turndown capability and can maintain good efficiencies throughout, every positive displacement blower has most efficient settings. It is key to have an expert properly size a blower for your application in order to select the most efficient choice available.

Implementing a VFD: Variable Frequency Drives can help make an overall blower package more energy efficient by controlling the speed of the motor, ensuring it runs no faster than necessary. VFD’s control the speed of the motor which in turn adjusts the airflow specifically to the air demand needed for the application, eliminating the need to blow-off air to atmosphere. No wasted air, no wasted energy.

Committing to proper maintenance schedule: The proper maintenance preserves efficiency and enhances reliability. Postponing or neglecting routine maintenance is an unwise and costly practice. Like an automobile, properly maintaining a blower package will extend its longevity, saving you capital expenses for replacement.

Gardner Denver experienced distributor i.e. Rastgar & Co in Pakistan can guide you through the options available and the most efficient choice for your applications. For more information visit our website


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