597.    ---------------.[COKE AND SMOKELESS-FREE AGE.]  Turbocompressors for Hydrogenation Plant.  Vol. 2, 1940, p. 120; Génie Civil, vol. 116, 1940, pp. 32-34.

      Turbocompressors are lighter and more compact then reciprocating compressors for high pressures of the order of 200 atm. and offer the further advantage that the gas compressed does not come into contact with lubricating oil.  The author discusses gas flow in labyrinth packings and methods of reducing the losses involved.  The formation of eddies in the labyrinth and the magnitude of the leakage, with different sizes of chamber between the constrictions, were investigated by hydraulic experiments on a large-scale model.