. Journal . , 1909, great heat developed by the comjjression of hydrogen1 200 atmospheres has led to the manufacture of highessure compressors which do the work in three stages.|he compressors contain three high-pressure cylinderslaced in tandem. In the first cyUnder compression takeslace to t) atmospheres, in the second to 313 atmospheres,id in the third to about 200 atmospheres. These com-ressors are made for air, hydrogen, oxygen, nitrogen,irbonic acid, or acetylene up to 1000 atmospheres pressure,ut for more than 250-300 atmospheres four stages arc•nployed, two twin-cylinders being u
. Journal . , 1909, great heat developed by the comjjression of hydrogen1 200 atmospheres has led to the manufacture of highessure compressors which do the work in three stages.|he compressors contain three high-pressure cylinderslaced in tandem. In the first cyUnder compression takeslace to t) atmospheres, in the second to 313 atmospheres,id in the third to about 200 atmospheres. These com-ressors are made for air, hydrogen, oxygen, nitrogen,irbonic acid, or acetylene up to 1000 atmospheres pressure,ut for more than 250-300 atmospheres four stages arc•nployed, two twin-cylinders being used. All valves arerranged in a vertical plane with the cjlinders. Theselachines take up very little space, are simple, and everyart is easily accessible and transportable. They seem to?quire very little attention, and are used in as well as in connection with military air-ships. Patents. ooling ami refrigeration of liquids or fluids. W. Hewitt,London. Eng. Pat. 20,381, Sept. 28, 1908. 3. sul ? HE apparatus consists of a hollow hub, ], divided intofo chambers, a, a^, by the partition, 2. The hub isrovided with projecting hollow blades or wings, 3, alsoivided by partitions, 7, into two chambers which com-lunieate respectively with the chambers, a, ai, by thearts or openings. 4. The apparatus is provided with a•incentric hollow trunnion, S, within which is a tube, 2()i,jmmunicating at one end with the compartment, a.• the chamber, 1, and at the other with the chamber. forms the outlet for the liquid. The hollow shaft, 8,js, secured upon it, a driving puUey or chain wheel. 26, indicate the admission- and exit-orifices respec-vely, of the stationary chambers, 27 and 10. Thequid to be cooled is forced into the stationarylamber, 25, passes along the outer hollow shaft, 8,ito the chamber, ai, and thence through 4, ti, 5, andj. into the chamber, a, from which it is discharged throughlie central hollow trunnion, 26^, into the chamber, liquid pa
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
