Manufacturing and Wholesale Industries of Chicago Volume 2

Manufacturing and Wholesale Industries of Chicago Volume 2

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1918 edition. Excerpt: ...forms into large mud-drums which may be blown down when necessary. Boilers are built in about two hundred and fifty different sizes and, if desired, with a working pressure of two hundred and fifty pounds. "The Page-Burton sectional water-tube boilers are so designed that all heating surface is directly exposed to radiation. It is not a total area of the heating surface that determines the efficiency of the boiler, but the cross-sectional area with respect to the flow of heat passages; they are split up vertically and horizontally; flues of small diameter are more efficient, due to more frequent contact from tube to tube; the section tubes are straight and so clustered over the gases that in a limited cubical space a large effective heating surface is accumulated; the alternate crossing of the sections acts as a vertical and horizontal baffle in the center of the toiler, which causes the gases to expand to the outer ends of the tubes-surface. On each side of the boiler, at the top, special baffles are provided, for as the gases pass in through the main tubes these baffles control the gases and cause them to pass beneath the steam and water drum. Therefore a balance expansion gas boiler accomplishes the same in a one pass as other types of boilers do in three pass. By actual pyrometer readings, a most uniform baffling of the gasses is accomplished. The advantages of a sectional tube boiler are considered of the highest type, due to each section being free to expand independently of the other section. Each section gives a complete circuit in water circulation, has a separate water feed from the upper drum, and contains a separate intake to the steam drum; therefore a boiler containing thirty sections has thirty water-feeds coming into...show more

Product details

  • Paperback
  • 189 x 246 x 12mm | 413g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236934571
  • 9781236934574