Ventilation method and means for the same

摘要: The invention relates to a method of establishing and maintaining in sealed tents or the like mobile units, an environment which is independent surroundings with regard temperature contamination. characterized by taking air from surroundings, extracting contaminated particles gas filtration, causing pass into unit so as establish predetermined pressure higher than surroundings. filtered mixed recycled within when aforesaid has been reached mixing continued for long internal equal greater pressure. mixture heated cooled then distributed essentially uniformly filtered, conjunction therewith, extract any remaining gas. also arrangement carrying out method.