Heating and ventilating buildings : a manual for heating engineers and architects . 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. Fig. 250.—Heater for Mechanical Systems of Heating. account for inefficiency of heating surface there should be about10 per cent excess or one square foot of heating surface for 12cubic feet o
Heating and ventilating buildings : a manual for heating engineers and architects . 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. Fig. 250.—Heater for Mechanical Systems of Heating. account for inefficiency of heating surface there should be about10 per cent excess or one square foot of heating surface for 12cubic feet of air heated. This heating surface for convenienceis usually estimated in lineal feet of one-inch pipe, and on thisbasis there should be one foot in length of one-inch pipe for4 cubic feet of air heated per minute, which agrees well withthe average practice; the increase in temperature of airbeing as shown in the diagram, Fig. 251, as the resultsof tests previously referred to.
Size: 1477px × 1692px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
