Practical Questions on Locomotive Operating

Practical Questions on Locomotive Operating

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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. 1913 edition. Excerpt: ...promote a slower rate of combustion? A. Since the fire box heating surface has a greater value over tube-heating surface it is not necessary to force the fire and the passage of the products of combustion through the tubes is slower, giving more time for the water to absorb the heat contained in them. 157. Of what material are boiler tubes made? A. Boiler tubes are generally made of charcoal iron with a Bessemer steel and welded on. 1 58. What mileage is generally available on tubes of various types of engines? A. From 35,000 to 50,000 miles is a general average with due regard to flue failures. 159. What methods are suggested to help flue failures on large engines? A. If it were possible to have greater circulation space and some method of distributing feed water from the injector into the boiler without centralizing it at one spot. Another suggested method is to depress the tubes slightly. 160. What is boiler scale? A. Boiler scale is due to impurities in the water. 161. What are some of these impurities? A. Lime, alkali, magnesia are the principal agents. 162. Will scale cause a hard steaming engine? A. Yes, it acts as an insulator of heat. 163. Explain how scale acts as an insulator of heat. A. It has been shown that M; inch of scale will increase the fuel consumption about 7 per cent. to 1O per cent. and about %-inch scale will increase the fuel consumption from about 18 per cent. to 20 per cent. 164. How can you prove this by practical experience? A. Engines turned out of shop with new flues will point it out clearly. The locomotive will do its former amount of work with a much less fuel consumption, which is a well-known fact to all locomotive enginemen. 165. What is grooving in a locomotive boiler? A. Grooving in a more

Product details

  • Paperback | 52 pages
  • 189 x 246 x 3mm | 109g
  • English
  • Illustrations, black and white
  • 1236788621
  • 9781236788627