The 520 Series of air compressors and vacuum pumps are for the recovery of ozone-depleting and other refrigerants. Because the 520 is oilless, it can recover many types of refrigerants. In addition, a high single-stage compression ratio of 50:1 provides recovery rates of 5-15 lbs/min for liquids and 0.5-1 lb/min for vapor. Other features include all wetted aluminum parts, and lightweight die-cast aluminum components.
Thomas Industries Inc., Box 29, Sheboygan, WI 53082, FAX (414) 451-4276.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
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