Proceedings of the Institution of Electrical Engineers Volume 23

Proceedings of the Institution of Electrical Engineers Volume 23

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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. 1895 edition. Excerpt: ... evaporate 11,000 lbs. of water per hour, have frequently been forced to 16,000, or about 50 per cent, in excess of the duty guaranteed by the makers, and at such times of heavy forcing there has never been any trace of priming or wet steam. On the whole, I think that there is a fair prospect of improving and supplementing our boiler plant and our methods of working it so that we may obtain in the future an average boiler efficiency of 70 per cent.--equivalent to an evaporation of 10 lbs. of water at a pressure of 150 lbs. when using Welsh coal, and an equivalent smaller evaporation from inferior and lower-priced coal. Fuel And Water.--Divs. 1 And 2.--The Effect Of The Efficiency Of Steam Engines On Dynamos Or Alternators. Now that so many supply works have been running for several years, and that the works accounts have been annually published Mr. _ J Crompton. in the full detail demanded by the Board of Trade requirements, so that the actual cost of fuel, water, stores, labour and salaries, and actual output of energy delivered, are recorded, and are known to everyone who interests himself in these matters, it might be thought an easy matter to draw some useful conclusions from these published figures, so as to throw light on the comparative efficiency of the various systems and types of plant used in these supply works; but I regret to be obliged to confess that the drawing up of such comparative tables is not an easy matter. I have examined the published accounts of 23 important and representative electric supply works, in order to compare for this part of the paper the cost of the fuel. From these I have prepared Table VI., which relates solely to fuel and water used. I must mention that in preparing this and the other tables I at...show more

Product details

  • Paperback | 310 pages
  • 189 x 246 x 17mm | 558g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236775414
  • 9781236775412