Stirling; A Book for Engineers

Stirling; A Book for Engineers

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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. 1906 edition. Excerpt: ...(1) A blast furnace gas, analysis by weight being, oxygen (O)= 2.7; carbon monoxide (CO) = 19.5; carbon dioxide (CO2) =18.7; nitrogen (N) =59. 1; all in per cents. The only combustible present is carbon monoxide, hence the heating value per pound of the gas is 0.195X4350=848.25 B. T. U. The net volume of air needed to burn a pound of the gas is 0.195X30.6=5.967 cu. ft. (2) A natural gas, analysis by volume being, oxygen (O)=0.40; carbon monoxide (CO)=0.95; carbon dioxide (CO, )=0.34; olefiant gas (C2H, )=o.66; ethane (C, H, )= 3.55; marsh gas (CH')=72.15; hydrogen (H)=21.95, all in per cents. All but the O and CO, are combustibles, hence the heat developed and net air required per pound of gas will be as worked out in detail in the following table: Proximate Analysis--The proximate analysis of fuel gives its proportions of fixed carbon, volatile combustible matter, moisture and ash. It is made by subjecting a sample to a temperature of 250 to 300 to expel the moisture, then to a red heat which expels the volatile matter; then to a white heat which causes the carbon to pass off as dioxide, leaving the ash as a residue. By weighing the residue at end of each operation the various percentages can be computed. See Article XV of Code, in chapter on Rules for Conducting Boiler Trials, page 204. Table 48 gives ultimate and proximate analyses of Alabama coals, and illustrates the relationship between the two. The proximate analysis is easy to make, it affords information as to the general characteristics of a fuel, and its relative heating value, but from it the heating value cannot be directly computed. The reason is that the volatile content varies widely in composition and heating value. resulted in production of some methods of estimating...
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Product details

  • Paperback | 78 pages
  • 189 x 246 x 4mm | 154g
  • United States
  • English
  • black & white illustrations
  • 1236842421
  • 9781236842428