Cyclopedia of heating, plumbing and sanitation; a complete reference work . orreducing the air-supply to thedifferent rooms. Adjustable de-flectors are often placed at thefork of a pipe for the same pur-pose. One o* these is shown inFig. 155. Fig. 150 illustrates a com-mon arrangement of fan andheater where the type of heatershown in Fig. 138 is used; andFig. 157 is a self-contained apparatus in which the heater is inclosedin a steel casing. Factory Heating. The application of forced blast for thet cold ai*i ,NL^r widows warming of factories and f 1 T11 shops, is shown in and 159. The
Cyclopedia of heating, plumbing and sanitation; a complete reference work . orreducing the air-supply to thedifferent rooms. Adjustable de-flectors are often placed at thefork of a pipe for the same pur-pose. One o* these is shown inFig. 155. Fig. 150 illustrates a com-mon arrangement of fan andheater where the type of heatershown in Fig. 138 is used; andFig. 157 is a self-contained apparatus in which the heater is inclosedin a steel casing. Factory Heating. The application of forced blast for thet cold ai*i ,NL^r widows warming of factories and f 1 T11 shops, is shown in and 159. The pro-portional heating surfacein this ease is generallyexpressed in the numberof cubic feet in thebuilding for each linearfoot of 1-inch steampipe in the heater. ()nthis basis, in factorypractice, with all of theair taken from out ofdoors, there are generallyallowed from 100 to 150cubic feel of -pace perfoot of pipe, accordingasexhaust or live steamis used, live steam in this case indicating -nam of about 80pounds pressure. If practically all the air is returned from the. D/SCHAGCe oucr mon Fig. 156. Common Arrangement of Fan with iof Type Shown in Pig. 138. 189 180 HEATING AND VENTILATION buildings to the heater, these figures may be raised to about 140 as aminimum, and possibly 200 as a maximum, per foot of pipe. The
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