Identifier: schoolarchitectu00bruc (find matches)
Title: School architecture; a handy manual for the use of architects and school authorities
Year: 1910 (1910s)
Authors: Bruce, William George, 1856-1949 Bruce, William Conrad, 1882- Bruce, Frank Milton, 1885- (from old catalog)
Subjects: School buildings
Publisher: Milwaukee, Johnson service company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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tempering isreduced to merely the correct size and locationof the cleaners and the tempering room. Theselatter, whether rooms or chambers, should be airtight, and sufficiently large to raise the air to thetemperature required. They should be white-washed several times a year, cleaned continually,and be kept perfectly empty at all times. Air-Washer.—There are a number of schoolbuildings throughout the United States that haveinstalled so-called air-washers. They are de-signed to cleanse the air from dust and soot be-fore passing into the schoolrooms. The deviceconsists of a series of baffle plates so arranged,in the inlet duct in the basement, as to arrestevery dust particle and then pass the air throughseveral sprays of water, thus thoroughly washingit before passing into the classroom. Anothermethod consists of the use of a horizontal cratefilled with moistened coke or excelsior throughwhich the air passes before, going into the upperducts. A third and simpler method comprises a 179
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180 Heating and Ventilation series of sprays emanating from perforated waterpipes. These pipes are so arranged that thesprays practically form a thin sheet of water,thoroughly washing the air as it passes through. Other very cheap and simple air filters maybe made of screens covered with hempen cords,jute cloth or cheese cloth. Each of the threematerials has been used successfully. To makethe screen rigid they may be covered with coarsefilter netting. Screen niters must be made mov-able and cleanable and should be covered witha good quality of material whichever is used.Care must be taken not to make the passage ofair through screens too difficult since the size offlues must be increased when air-washers are be-ing planned. There is no doubt but what airthus washed or screened becomes pure andfresh. When the water method is used it maybecome a combination air-washer and humidi-fier. The water air-washer may be used as atemperature cooler in the early fall and latespring of the school

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