Compressed Air Best Practices - October 2008 - (Page 35) Compress Air Industry AUTOMOTIVE TRANSIT m r sed r | 10/08 | Efficiency no one has ever taken the study of the vane technology to our levels and this has left loads of space for improvement (which we will gladly take advantage of). On the other hand, screw compressor manufacturers have in the past 20 years invested substantial amounts of money in universities and R&D departments all over the world and have developed their compressor to its physical limits. Therefore, I believe that screw technology is fast approaching its zenith in performance betterment.” The R&D team set the standard running speed at 1,800 rpm — with the ability to run at speeds as low as 1,200 rpm. The slower the unit runs, the less specific energy it consumes. The Maxima Series (a constant speed machine) is a single-stage air compressor with a performance curve similar to that of a twostage air compressor. Mattei is delivering six scfm per horsepower (hp) with the singlestage Maxima! We turn the Maxima airends at 1,200 rpm to deliver the best kW/100 scfm performance in the industry. All Mattei air compressors feature direct-driven in-line airends. This eliminates drive train efficiency losses associated with belts or speed increasing gearboxes. The result is superior performance and the highest possible efficiency. p p Produce more air per revolution with some models producing six scfm per hp! Larger compression chamber offers more space, and therefore more volume of air to compress per revolution. Achieves 90% mechanical efficiency due to better internal sealing. Design eliminates the efficiency robbing of internal blow-holes found in rotary screws. Greater durability due to low operating speeds; Mattei airends rotate on two bushings and are designed to be 100,000-hour machines. Screw air ends run fast, use up to six bearings and tend to last about 35,000– 40,000 hours. By eliminating air end bearings, Mattei has eliminated one of the most common scheduled failures found in rotary screw airends. p p p Save and Prevost ALR Aluminum Air Piping Piping: Labor saving Easy to install or modify. No gluing, sweating or threading needed. Energy efficient Smooth passages & leak free connections for life-long energy savings. Superior Air Quality ALRʼs non-corrosive for cleaner air, longer air tool life. Range of diameters 7 sizes from 20 -80 mm. What advantages do rotary vanes offer vs. rotary screw compressors? Rotary vane air compressors produce more air per revolution than rotary screws — the Maxima, operating at 1,200 rpm achieves optimum efficiency. By comparison, most rotary screws are running at 3,500 to 7,000 rpm, increasing wear and reducing air end life. There are many inherent design advantages in the rotary vane: For the dealer near you, call: 800.845.7220 prevostusa.com Prevost Corp. | P.O. Box 17708 | 1200 Woodruff RD Unit B-13 Greenville, SC 29606 www.airbestpractices.com 35 http://www.prevostusa.com http://www.airbestpractices.com
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