Warm-Blast Steam-Boiler Furnace; A Report Upon a Series of Trials of an Apparatus for Transferring a Part of the Heat of Escaping Flue-Gases to the Furnace by Warming the Entering Air

Warm-Blast Steam-Boiler Furnace; A Report Upon a Series of Trials of an Apparatus for Transferring a Part of the Heat of Escaping Flue-Gases to the Furnace by Warming the Entering Air

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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. 1886 edition. Excerpt: ...below ..". Difference of temperature, boiler and air supply: Pacific Boiler, air below boiler Warm Blast No. 1," above" Warm Blast No. 2," above" Pounds of flue gases per pound of coal, days: Pacific Boiler Warm Blast No. 1 Warm Blast No. 2 Pounds of water equivalent in heat capacity to flue gases per pound of coal; sp. heat of gases--0.2, Pacific Boiler Warm Blast No. i Warm Blast No. 2 British thermal units carried off in gases per pound of coal, days: Pacific Boiler Warm Blast No. 1. Warm Blast No. 2. TABLE X. Efficiency corrected for difference in temperature of external air, and difference in time of banking fires: Pacific Boiler Warm Blast No. 1 Warm Blast No. 2 Difference of Efficiency: Points gained by warm blast, over Pacific Boiler, cold blast: per cent. Warm Blast No. 1. Warm Blast No. 2. Ratio of gain to the larger quantity (ri/H =11.9 etc.) Warm Blast No. 1 per cent. Warm Blast No. 2 Ratio of gain to the smaller quantity ($?jV = 13.5$ etc.): Warm Blast No. 1. Warm Blast No. 2. The power consumed in driving the blower is about 1 per cent, of the whole power produced by the boiler in combination with a good steam engine. It therefore appears that the net saving effected by the warm blast was from 10.7 to 15.5 per cent. of the fuel used with cold blast, which is the same thing as to say that discontinuing the warm blast would cause an increased consumption of fuel equal to from 12.3 to 18.9 per cent, of the quantity used with hot blast. Broadly stated, the gain is 10 to 15 per cent. IV. CONDENSED BECOBD OP WEEKLY EXPERIMENTS. The following tables are greatly condensed, embodying, as they do, the summing up of more than 1,250 pages of notes taken during the tests, and the results of very...show more

Product details

  • Paperback | 42 pages
  • 189 x 246 x 2mm | 95g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236877969
  • 9781236877963