Identifier: drevanshowtokee00evan (find matches)
Title: Dr. Evans' How to keep well;
Year: 1917 (1910s)
Authors: Evans, William Augustus, 1865- (from old catalog)
Subjects: Medicine, Popular Hygiene Sanitation
Publisher: New York, Pub. for Sears, Roebuck and co. by D. Appleton and company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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room that of itself is enough to condemn the system. The above suggestions are applicable to the present installations. Noneof them except the fans will cost much money. A combined thermometerand hygrometer can be had for about twice the cost of a thermometer. In themain, the suggestions call for some retraining of the school engineers andthat is about all. When new schools are built they should be heated and ventilated alongthe following lines: 1. Eadiation placed along the outside walls. 2. Air intakes through the walls back of the radiators. 3. Air outlets located on the inside wall near the ceiling. 4. Outlet duct: in the attic equipped with exhaust fans. 1240 HOSPITALS—SCHOOLS 5. Provision for discharge into the room of enough saturated steam tomaintain the relative humidity at 50 to 70. 6. Provision for enough radiation to keep the room temperature at 68°F. and the temperature of the outside walls high enough to permit of ahumidity of 60 to 70. 7. Windows which can be raised.
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Illinois Dept. of Public Instruction Fig. 503.—Perspective of Modern One-Room School. Such a system can be installed for much less than the present cost ofinstallation. It will do away with the present elaborate heating and mixingchambers. It will reduce the expense of installation of ducts much belowits present rate. It will mean a smaller fan cost. The volume of air to be handled need not be 1,800 cubic feet per pupilper hour. So large a quantity was demanded for the present system becauseof the mistaken method of ventilation by dilution. This can be reduced two-thirds. This will save enormously in the cost of heating. It will save inthe volume of air to be handled and therefore in the cost of fan installationand maintenance. On windy days the rooms on the windward side would require no exhaust.The fan work would then be limited to the rooms on the lee side. These itemswould much more than offset the cost of a steam or hot water installation.Besides, it would cost less to heat and

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