Friday, May 13, 2011

Rotary Screw Compressors – Perfect Compressors for medium to high nitrogen flow processes!

Packaging industries benefit greatly from using nitrogen generators in their applications. From food packaging to cheese packaging, to coffee packaging and fruit storage – the supply on site nitrogen integrated into these industries’ specific applications has proven to save money, decrease expenses and reduce labor costs.

As part of the packaging industries, many automated machines throughout these facilities require compressed air. The most common and widely used type of air compressor recommended for these industries are rotary screw compressors.

Packaging industries require nitrogen purity in medium to high flows 99.5% (0.5% O2 or below). Rotary screw compressors are perfect for this application. Rotary screw compressors are positive displacement compressors, meaning compression takes place by matching two helical screws that, when turned, guide air into a chamber, the volume of which is reduced as the screws turn, allowing the flow of air to be controlled.

Rotary screw compressors are outfitted with enclosures which keeping noise levels to a minimum. Many also have integral refrigerated air dryers to minimize floor space.  Rotary screw compressors are oil-lubricated while make them louder, however in a factory type environment this is rarely an issue. All nitrogen generators require dry compressed air therefore an air dryer must be installed to protect the units from water contamination.

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