Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . feet. A := Area of surface of tubes in contact with = Area of tube sheets. In the problem under consideration this will amount to 916square feet. Now, taking the mean of the ratios of the heatingsurface to grate area, namely, 35 to i, we have for our gratearea: 916 = , or say, 27 square feet. 35 Having the above data as a basis we will now proceed to findthe size of the steam opening. The size of the steam opening de
Laying out for boiler makers and sheet metal workers; a practical treatise on the layout of boilers, stacks, tanks, pipes, elbows, and miscellaneous sheet metal work . feet. A := Area of surface of tubes in contact with = Area of tube sheets. In the problem under consideration this will amount to 916square feet. Now, taking the mean of the ratios of the heatingsurface to grate area, namely, 35 to i, we have for our gratearea: 916 = , or say, 27 square feet. 35 Having the above data as a basis we will now proceed to findthe size of the steam opening. The size of the steam opening depends, of course, on theamount of water that the boiler will evaporate under normal working conditions. Sometimes this opening is figured accord-ing to the size, speed, etc., of the engine for which the steamis generated. As we have not taken any engine into accountwe will merely observe the method used without applying itto our case. To prevent undue reduction in pressure (there isbound to be some) between the boiler and the engine, due tothe frictional resistance opposing the flow of steam, condensa-tion, etc., the velocity of steam through a pipe of moderate. FIG. I.— SIMPLEST FORM OF REINFORCING PLATE. length and with several bends should not exceed 85 feet persecond, or s,ioo feet per minute. Then the area of the steampipe may be found from the formula: a X ^A = 5,100 5feamp//oe fhrnje
Size: 1346px × 1857px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidl, booksubjectsteamboilers
