Rules for the Proportions of Modern Engines and Boilers for Land and Marine Purposes

Rules for the Proportions of Modern Engines and Boilers for Land and Marine Purposes

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1865 edition. Excerpt: ...of a donkey engine is usually a cylinder, secured perpendicularly over the pumps, having a slotted cross head, to give motion to the crank shaft and fly wheel; the use of the latter is to assist the action of the plunger; each side of the cross head is keyed or bolted to the rods of the cylinder and pump, the steam cylinder is supplied with steam from the boilers, and either exhausts into the condenser or funnel. Cubic contents of the pump = cubic contents of feed pump for one engine as before deduced x 1.5. Stroke of pump = diameter x 1.25. The remaining proportions of the pump and valves are as for that of the engine. Area of steam cylinder = area of pump x 1.5. The remaining proportions of the engine are as for high pressure engines. LAND AND MARINE BOILERS. Land Boilers. The best kind of boiler is that known as the Cornish or flue boiler. The following tables and rules will enable the practical proportions to be easily obtained: Length of boiler = Total heating surface of boiler divisor as per table length Diameter of boiler = 4 to 4.5 diameter of boiler Diameter of single tube = Depth of water line from top of boiler. diameter of boiler Height of water line from top of tube = diameter of boiler 12 When two tubes are used in the boiler, their position from top of boiler must be as for a single tube. Diametrical length of flues = diameter of tube. Heating surface of tubes = total surface of tube =.5. Heating surface of bottom flue = total surface of boiler exposed in flue. - Heating surface of side flues = surface of boiler exposed in both side flues x.5. Grate or fire bar surface = 1 to f of a square foot per HP.. ., _ area of grate surface Area of side flues =-. 4 Area of bottom flue = area of side flue. Width of bottom flue =...show more

Product details

  • Paperback | 48 pages
  • 189 x 246 x 3mm | 104g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236587529
  • 9781236587527