A manual of practical hygiene for students, physicians, and health officers . )er 1,000 cubic feet means in the course of aday. Moisture may be imparted to the air by exposing pans or porousvessels of water to the heated current, or by means of the humidi-fier, which exposes to the air passing through the registers a surfaceof cotton wicking communicating wdth the reservoir of water. (SeeFig. 48.) With this device. Dr. H. J. Barnes, of Boston, reports Fig. Humidifier. that he is able to keep his office at 53 per cent, relative humidity byevaporating an average of quarts of water per d
A manual of practical hygiene for students, physicians, and health officers . )er 1,000 cubic feet means in the course of aday. Moisture may be imparted to the air by exposing pans or porousvessels of water to the heated current, or by means of the humidi-fier, which exposes to the air passing through the registers a surfaceof cotton wicking communicating wdth the reservoir of water. (SeeFig. 48.) With this device. Dr. H. J. Barnes, of Boston, reports Fig. Humidifier. that he is able to keep his office at 53 per cent, relative humidity byevaporating an average of quarts of water per day. At the sametime, he finds a temperature of 65° to be perfectly comfortable wherebefore he had required 70° or 71°. On a larger scale, water may be vaporized into the air in the formof steam from a boiler. In the building of the American Bell Tele-phone Co., in Boston, a building having a capacity of 450,000 cubicfeet and a day-time population of more than 450 persons, the air,which is distributed by the mechanical system, is drawn into thebuilding at the rate of 26,000 cubic feet per minute, heated to about100° F. in the stack room, and moistened so as to contain about 50per cent, relative humidity. For the production of this condition,no less than 675 gallons of water in the form of steam are given tothe air in ten hours, or about one and a half barrels per hour. Certainparts of the building which, before the adoption of this process, had i>
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjecthygiene
