Determining the actual gas-dynamic characteristics of centrifugal natural gas compressors

A method has been devised for determining the actual gas-dynamic characteristics of a centrifugal compressor (CC). A procedure is given for calculating those characteristics for worn CC by reference to the maker’s panel ones. __________ Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 1, pp. 26–28, January, 2006.     

Analysis of indicated efficiency of piston compressors

It is shown that the indicated efficiency gives an exaggerated assessment of thermodynamic perfection of the working process of piston compressors and leads to a biased estimate of mechanical losses. It is established that an alternative to the indicated efficiency is internal efficiency of the compressor. For testing compressors, it is recommended that two diagrams be plotted: indicator and force (stress). It is noted that the presence of two diagrams helps determine the internal efficiency and obtain information about frictional losses in the internal piston-cylinder liner (sleeve) system and in the external system pistonelectric motor of compressor drive. __________ Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 8, pp. 29–31, August 2006.     

Seal for high-pressure piston compressors without lubricant

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 12, pp. 18–19, December, 1991.