Operation Analysis of Rotary Tools of Compressor Station Using Exergy Approach

In this study, operation of compressor station has been investigated by exergy approach. Exergyanalysis is a thermodynamic method which shows the irreversibility of a system quantitatively. Gascompressors are used to compensate the pressure drop along the gas pipeline significantly. Thecompression process causes temperature rise of gas; in this regard gas cooler is applied to reduce the temperature. The compressors are run at variable speeds; fuel consumed in combustion chamber is changed accordingly. The case study is focused on transmission of sour gas through IGAT5 pipeline, located in south of Iran.Exergy destruction, exergetic efficiency, fuel consumption of station and effect of each elements of station on total destruction is measured for speed range of 5200 to 7000 rpm of compressor. It is showed that about 90 precent of destruction is possessed by turbine. Fuel consumption of station depending on compressor speed and increasing trend is seen to start from 0.924 kg/s at 5200 rpm and end in 1.2 kg/s at 7000 rpm.