. Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products. inverted syphons(Chapmans patent 1752, 2511, 1888). In Fig. 194, a and b represent twocells, in which the vacua are respectively five and fifteen inches, or a differencein pressure equivalent to a ten-foot head of water. If the syphon in this ismore than ten feet long a water seal will be formed at the lower part of theU due to the balancing of the two columns of water, and the water willcontinuously and automaticalh^ pass from cell to cell. This system is als
. Cane sugar; a textbook on the agriculture of the sugar cane, the manufacture of cane sugar, and the analysis of sugar-house products. inverted syphons(Chapmans patent 1752, 2511, 1888). In Fig. 194, a and b represent twocells, in which the vacua are respectively five and fifteen inches, or a differencein pressure equivalent to a ten-foot head of water. If the syphon in this ismore than ten feet long a water seal will be formed at the lower part of theU due to the balancing of the two columns of water, and the water willcontinuously and automaticalh^ pass from cell to cell. This system is alsoapplicable to juice circulation. The flashing of the water into steam as it passes to the lower pressureseems to disturb this system, and in actual operation it is found necessaryto make the syphon twice as long as the prevailing pressures indicate tobe necessary. (6) The water from each cell gravitates to a sealing tank by a fall pipe. 348 CHAPTER XVIII The sealing tank may be on the ground floor if the apparatus is high enough,otherwise it has to be located in a pit. A pump is employed to raise thewater from the sealing Fig. 196 (c) Each cell is supplied with an individual pump. In this case the waterfrom a cell may pass into a receiver connected with the vapour calandria ofthe one next in series. This receiver is known as a flash pot, and has forits object the release and utilization of the vapour corresponding to the differ-ence in pressure between the two calandrias. EVAPORATION 349 (i) The condensed water from each cell flows to the fall pipeof the con-denser or to the wet air pump. The method most to be advised is the separation of the first cell water»all of which is used as boiler feed. The second cell water is also taken awayseparately, and used as make-up water for boiler feed. The third and fourth
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsugar, bookyear1921
