Developing fire-resistant high-efficiency air filters

Issue 5 and Volume 113.

Developing fire-resistant high-efficiency air filters General Electric Company TODAY’S PLANT MANAGERS requiring cleaner air in manufacturing facilities, are turning more and more to high-efficiency space-type filters as now used in many exhaust systems for this country’s atomic energy plants. Atomic plant engineers have found that space filters, with an efficiency of at least 99.55 per cent in removing submicron particles from the air streams, are the most efficient dry-type filters now available. Extremely important to the atomic energy business, as a means of protecting environmental areas against possible contamination by filtering exhaust stack gases, this high-efficiency filtration is also necessary to supply clean ventilation air to pharmaceutical houses, photographic equipment and textile manufacturers, movie studios, breweries, food-processing plants, art and manuscript depositories, vaults, etc., where airborne contaminants would affect purity of product. The original space-type filter, first used in atomic energy plants in 1947, had one serious flaw—it was a…

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