The Materials of Engineering Volume 1

The Materials of Engineering Volume 1

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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. 1884 edition. Excerpt: ... required to raise the temperature of the 3.67 parts carbonic acid one degree, or 8080 = 10,174 C. = 18,345 F. The heat of combustion of hydrogen is sufficient to raise the temperature of 34,462 times its weight of water, 4 to 5 Cent., but it requires for its combustion 8 times its weight of oxygen, and produces 9 times its weight of vapor. The products of combustion weigh nearly 2 times as much as those of the Watts' Dictionary of Chemistry. combustion of an equal weight of carbon. Some of the heat produced by the combustion of hydrogen becomes latent and does not increase the temperature of the gases. The latent heat of water, or that needed to convert 1 part of water at 100 C. into steam, is 537 times as much as is needed to raise the temperature of an equal weight of water from 4 to 5 C, and 966.1 times the quantity which will raise the temperature of one part from 39. 1 to 40.i Fahrenheit. The quantity of heat latent in the 9 parts vapor produced by the combustion of hydrogen will therefore be 4,833 metric heat units; this must be taken from the total amount of heat generated in calculating the quantity of heat producing rise in temperature. Metric British Parts by weight Heat Heat of water vapor, units. units. Total heat of combustion of 1 part hydrogen 34,462 62,000.0 Latent heat of water in heat units.... 9 x 537 = 4,833..9 x 966.1 = 8,694.9 Available heat 29,629 = 53.305.1 The specific heat of water vapor is 0.475, the heat raising the temperature of 9 parts water and 9 parts water vapor have the proportion, 9 X r _ _9_. 9 x 0.475 4-275' and the rise in temperature will be 9 = 6930.7 C. = i2.475.3 F. Thus the heating and the calorific power are not necessarily the same. The heating effect depends only partly upon the calorific power more

Product details

  • Paperback | 90 pages
  • 189 x 246 x 5mm | 177g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236493524
  • 9781236493521