Robert A. Sturdy, The Gardner-Denver Company
Recent increases in the demand and price for natural gas have stimulated requirements for gas compressors of all sizes. This paper develops the basic fundamentals of gas compressor sizing. The scope of this discussion is limited to slow speed (300-1000 RPM), horizontal, double acting, reciprocating compressors. Since exact specifications vary between different manufacturers, it is advisable to consult the manufacturer concerning his product's performance. The data and tables shown are intended to be as universally applicable as possible. A field gas compressor normally consists of the gas compressor itself, a prime mover, and other components all coordinated to meet a specific condition or range of conditions. The emphasis here will be given to sizing the compressor, and its flexibility and coordination with other components of the package.