Compressed air; theory and computations . e,and certainly additional air could betaken in with the water. Art. 33. Hydraulic Air Compressors.—Entanglement Type.—A few compressorsof this type have been built compara-tively recently and have proven remark-ably successful as regards efficiency andeconomy of operation, but they arelimited to localities where a waterfall isavailable, and the first cost of installa-tion is high. The principle involved is simply thereverse of the air-lift pump, and can be applied will be found inArt. 39 on air-lift pumps. Figure 11 illustrates the element
Compressed air; theory and computations . e,and certainly additional air could betaken in with the water. Art. 33. Hydraulic Air Compressors.—Entanglement Type.—A few compressorsof this type have been built compara-tively recently and have proven remark-ably successful as regards efficiency andeconomy of operation, but they arelimited to localities where a waterfall isavailable, and the first cost of installa-tion is high. The principle involved is simply thereverse of the air-lift pump, and can be applied will be found inArt. 39 on air-lift pumps. Figure 11 illustrates the elements of a hydraulic air compressor, h is the effective waterfall. H is the water head producing the pressure in the compressed air. t is a steel tube down which the water flows. S is a shaft in the rock to contain the tube t and allow the water to is an air-tight hood or dome, either of metal or of natural rock, in which the air has time to separate from the is the air pipe conducting the compressed air to point of Fig. 11. OTHER AIR COMPRESSORS 65 b is a number of small tubes open at top and terminating in athroat or contraction, in the tube t. By a well-known hydraulic principle, when water flows freelydown the tube t there will occur suction in the draws air in through the tubes b, which air becomes en-tangled in the passing water in a myriad of small bubbles; theseare swept down with the current and finally liberated under thedome R, whence the air pipe A conducts it away as compressedair. The variables involved practically defy algebraic manipula-tion, so that clear comprehension of the principles involved mustbe the guide to the proportions. Attention to the following facts is essential to an intelligentdesign of such a compressor. 1. Air must be admitted freely—all that the water can entangle. 2. The bubbles must be as small as possible. 3. The velocity of the descending water in the tube t shouldbe eight or ten times as great a
Size: 998px × 2504px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublish, bookpublisheretcetc
