Chemical Engineering Volume 10

Chemical Engineering Volume 10

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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. 1912 edition. Excerpt: ...connected to the single vacuum dryer shown in Fig. 52 (this journal, Vol. IX, p. JQO. August. 1911). With this installation verygood results have been obtained and the quantity of cooling water has been decreased from 35 to 50 per cent below that required with hand regulation. Another construction of an automatic temperature controller for the regulation of the ceding water to a counter-current condenser and applied by the author may be seen in Fig. 82. Part 21 is a bull) which contains a volatile liquid and is inserted in the tail pipe through a screwed flange 23 similarly as shown in Fig. 78. The flexible metallic transmission tube 20 connects the bulb 21 with the syphon metallic bellows 16 which operates the cooling water-inlet valve 1. The bulb 21, the metallic tube 23 and bellows 16 are hermetically sealed and confine a liquid which vaporizes at low temperature. When the water in the tail pipe becomes warm, the vapor generated in bulb 21 forces some of the liquid into the bellows, which expands this by overcoming the counterweight 23 and opens the valve 1. When the water reaches a certain lower temperature, the vapor in the bulb condenses and allows the liquid to flow from the bellows back into the stem so that the bellows now collapses and closes the water-inlet valve. This regulator can be set for different temperatures by adjusting the counterweight on the lever arm at 27. The variations of temperature of the condens water can be seen on charts Figs. 64 and 70 in my article in the May issue, 1912, p. 268. To determine the quantity of cooling water the following formula can be used: H--h W =, where t, -(: W = weight of cooling water in pounds necessary to condense one lb. of steam, H = total heat of steam at condenser pressure and vacuum..show more

Product details

  • Paperback | 940 pages
  • 189 x 246 x 47mm | 1,642g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123663277X
  • 9781236632777