Thermodynamic and dynamic analyses of a variable speed reciprocating compressor have been conducted to investigate performance changes and some data related to the reliability problems such as valve velocity, PV value, bearing loci, Sommerfeld number, minimum film thickness etc. The first law of thermodynamics, continuity equations, valve dynamic equations and Helmholtz resonator method were used in the thermodynamic analysis and lumped mass method, hydrodynamic lubrication theory and mobility method are adopted in the dynamic analysis. Simulation results for the operating speed range of 1800 to 4200 rpm will be presented in this paper.
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