School architecture; a handy manual for the use of architects and school authorities . ravity sys-tem, is liable to be more or less of winds and other weather condi-tions having a large bearing on the success ofsystem. The plenum system of ventilation, how-ever, with fan, has proven exceptionally more expensive, it lends itself to theready heating of the fresh air and its rapid intro-duction into classrooms by forcing air throughencased heat coils in warming chambers and theconsequent transmission of warmed air intorooms. The direct with mechanical venti
School architecture; a handy manual for the use of architects and school authorities . ravity sys-tem, is liable to be more or less of winds and other weather condi-tions having a large bearing on the success ofsystem. The plenum system of ventilation, how-ever, with fan, has proven exceptionally more expensive, it lends itself to theready heating of the fresh air and its rapid intro-duction into classrooms by forcing air throughencased heat coils in warming chambers and theconsequent transmission of warmed air intorooms. The direct with mechanical ventilation systemof heating schools has become very popular inrecent years. With this arrangement radiators orwall coils are placed in front of windows and onexposed sides of schoolrooms, to which the steamgenerated at boilers is furnished. In cold weatherthe greater part of the heating of the rooms isthen done through this direct radiation. With themechanical ventilation is connected a fan whichblows air through a series of coils located in aplenum chamber. This plenum chamber has 155. 156 Heating and Ventilation ducts connected to it, one going to each room andthrough these ducts a constant supply of propertempered air is sent to the rooms. As will beseen, the pupils are therefore getting a constantsupply of fresh warm air to breathe, and in whichthis arrangement considerably differs from andimproves over the simple direct system of is a considerable benefit in economy also tobe considered in the arrangement of this heatingsystem, viz. : that in the milder weather the directapparatus, if automatically controlled, is kept shutoff the greater part of the time and the heatingas well as the ventilation is then done throughthe fan heating system. If not automaticallycontrolled, these conditions would altogether de-pend upon the ability or the willingness of theteachers to give their attention to the heatingplant. Air.—The strongest argument that can pos-sibly be advanc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectschoolb, bookyear1910
