Heating and ventilating buildings : a manual for heating engineers and architects . Fig. 248. —Heater for Mechanical System. The heaters are especially designed to afford free circulationof the steam and to permit a ready removal of the water ofcondensation and Fig. 249.—Details of Heater-Shown in Fig. 248. The heating surface, as will be seen by referring to tests,page 109, will emit 600 to 1000 per square foot per MECHANICAL VEA TIL A TING SYSTEMS. 3«3 hour and should average one square foot for every I 3 to 1 5cubic feet of air heated from o° to 1200 F. per minute. To

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910