Linde machine

The liquid nitrogen used in the vessel D is pro-uced in a special Linde machine from the atmosphere. 

Diesel began work on an economical engine as early as 1880. The following year he took out his first patents—for machines to make clear ice. Throughout the remainder of the decade he worked on an ammonia vapor engine and (less rigorously) on a solar-powered engine. In 1889 he moved to Berlin to work as Linde s representative there. In... 

Transport kg/100 km Gas 2.5 6.0 90%-multi-stage Best means pipeline, truck, Hydro-Pac, Neuman Esser, PDC Machines, Inc., RIX Linde, Air Products, Praxair... 

It is, therefore, easy to understand why all attempts to liquefy hydrogen in Linde s machine were unsuccessful. At the ordinary temperature, hydrogen, imlike air, becomes warm when allowed to expand without doing work. If, however, we cool the compressed hydrogen to below the inversion temperature ( — 80°) before allowing it to expand, its temperature falls when the pressure is released, and by repeated compression and expansion it may be liquefied and even solidified. In machines for liquefying hydrogen it is, therefore, necessary to cool the gas Phil. Mag. (1907, 6, 13, 722). t (1906). 

Lind P, Maltseva T. Support vector machines for the estimation of aqueous solubility. J Chem Inf Comput Sci 2003 43 1855-9. 

The nitrogen can be obtained from the atmosphere, either hy liquefying it and fractionally distilling it with a Linde or Claude machine, as described rn Martin s Industrial Chemistry, Vol. II., or simply by passing air over heated copper. The hydrogen can be obtained industrially by any of the methods discussed in Martin s Industrial Chemistry, Vol. II. 

The nitrogen produced must be free from moisture and oxygen. The Linde plant already in use gives 100,000 cub. ft. of nitrogen per hour, containing less than 0.4 per cent, oxygen. In the Claude machines, now installed in the new works at Odda, the nitrogen supplied contains less than o. 1 per cent. O. The presence of moisture would decompose the calcium carbide thus —... 

Two methods are now in use technically, namely, the free-expansion method (Hampson s and Linde s machines) and the work-expansion method (Claude s machine)... 

The researchers of TNRI had developed a modification of the Haber process—the Tokoshi Process—which was composed of all domestic machines and apparatus except for the Linde air-separating machine. Industrialization of this process was tried by Showa-Denko in 1929 production was recorded at 20 tons per day. 

Ammonia-compressor refrigeration machine (Carl von Unde) Breweries need refrigeration so they can brew year-round. Linde refines his ammonia-cycle refrigerator to make this possible. 

Additional comment by M. A, Dubs, Linde Company Linde has been impact testing for over 15 years. The machine used has a capacity of about 114 ft,-lbs. We have found that many materials are more sensitive in cold gaseous oxygen than in liquid oxygen. 

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