. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . s of blowers is better adapted to hot-blast heatingwhere high temperatures of air are required than to schoolhouseventilation which calls for large volumes at moderate tempera-tures. A heater for ventilating purposes does not need to bemore than 8 or 10 pipes deep, so, if this type is employed, largesections should be used and a sufficient number placed side by sideto make up the required amount of radiating surface for a heater DIFFERENT TYPES OF BUILDINGS 269 of this depth. The
. Power, heating and ventilation ... a treatise for designing and constructing engineers, architects and students . s of blowers is better adapted to hot-blast heatingwhere high temperatures of air are required than to schoolhouseventilation which calls for large volumes at moderate tempera-tures. A heater for ventilating purposes does not need to bemore than 8 or 10 pipes deep, so, if this type is employed, largesections should be used and a sufficient number placed side by sideto make up the required amount of radiating surface for a heater DIFFERENT TYPES OF BUILDINGS 269 of this depth. The form shown in Fig. 152 is particularly adaptedto buildings where a large volume of air is to be supplied, and thespace available for the heating apparatus is somewhat limited. In designing a system of ventilation for a school building themain heater is usually made large enough to raise the total airsupply to a temperature of 70 to 75 degrees in the coldest heat for warming is then provided by a separate system ofdirect radiation placed in the rooms, or by indirect stacks at thebases of the 189. To Prevent Cold Air Entering Rooms Through Vent Flues. Arrangement with Cast-iron Heater.—Fig. 190 shows a typicalarrangement of fan and overhead cast-iron heater. The air isdrawn through the inlet windows, as shown, and passes into thespace above the heater; it is then drawn through it and into thefan, from which it is discharged into the main distributing ductat the basement ceiling. The bottom of the heater should be atleast 30 inches above the water line of the boiler so that the con-densation will easily flow back by gravity through a check This is one of the simplest arrangements of fan and heater, asit does away with the use of pumps and traps for returning thecondensation to the boiler. When this system is used, an enginewith a large cylinder should be employed so that the steam pres-sure need not exceed 15 or 18 pounds, and the whole system,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectventilation, bookyear
