A Textbook on Applied Chemistry Volume 3

A Textbook on Applied Chemistry Volume 3

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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. 1902 edition. Excerpt: ... an escape valve, pressure gauge, and steam trap. The condensation water is withdrawn by means of a separate steam trap from each pan coil. The vacuum pumping engine is of unusually large capacity, to insure the maintenance of a very high vacuum and consequent efficiency of the pan. This vacuum pumping engine is especially designed to avoid several'of the disadvantages inherent in most of these engines; the heavy flywheel is entirely carried between the bearings and the pump ram, and the steam piston is directly connected with-. out the intervention of link work. The whole pump occupies very little of the usually valuable floor space, and all parts are easily accessible for examination and repairs. The pump is of the floating-arm-displacement type, with suction and delivery valves of very large area, and is so arranged that all the valves, grids, and guards'can be withdrawn and replaced in short order. 47. Fig. 8 represents a perspective view and Fig. 9 a section of this form of evaporating pan. The boiling pan 5 consists of air-tight hemispheres surmounted by a funnel connected with a tube l that leads to a condenser A. The apparatus is supplied with steam by the pipes r, s, the steam circulating in the boiling pan by means of a pipe g. By. opening a lever valvef, the juice can be run, by means of the pipe a, into the pan 17, when the pan, after continually boiling, requires to be refilled. The pipes l and w are connected to an air pump. The manometer /z shows the state of the air pressure, which can be regulated by opening the pipes connected to the vacuum chamber. By means of the gauge cylinder G, the quantity of sirup in the boiling pan can be ascertained, the gauge cylinder being connected to the boiling pan by the pipes a and...show more

Product details

  • Paperback | 160 pages
  • 189 x 246 x 9mm | 299g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236737563
  • 9781236737564