Thermo-dynamic performance analysis

One of the most significant development of CST is its Software for Thermodynamic performance analysis of reciprocating compressors, the ReciPerf. This software can deal with a very large number of operational cases in terms of cylinder types and settings, suction temperature from cryogenic to high temperature, discharge pressure up to the very high values for LDPE, capacity control from step through  reverse flow, type of gas with a large number of state equations available in the associated CSThermo software. Because of these features, the ReciPerf is not a generic selection software but is a very precise scientific tool to determine the performance of any given compressor and can be utilized both for design of new compressors and diagnostics of the operating ones. The ReciPerf calculates all the aspects of the compression evaluating with great precision all the mechanical and thermodynamic parameters.
For instance, for the mechanical aspects of the compressor, the ReciPerf calculates:

• All loads (gas, inertia, combined) at every crank along the cylinder line (piston rod, Xhead to piston rod connection, Xhead pin, crankpin, main bearings)
• Polar diagram of loads on all bearings
• Data for torsional analysis
• Data for flywheel selection

CST, by means of its thermo-dynamic software, can support its customers in all the circumstances where a precise evaluation of the thermodynamic performance of the compressor is needed for design, diagnostics & troubleshooting, RCA, plant performance assessment, a.s.o.

Polar diagram on the bearings

Typical ReciPerf Printout

Torsional moments and rotational speed fluctuation