As the value of natural gas began to rapidly escalate in recent years, a number of old concepts for improved gas turbine pipeline station fuel consumption have been analyzed. These concepts include the use of diesel starting devices, inlet air evaporative coolers, higher effectiveness regenerators, steam injection, combined steam and gas turbine cycles, optimum loading of the gas turbine, and more frequent changing of compressor impellers. This paper reviews these concepts in anticipation of higher fuel costs and offers a brief analysis of economic gains.

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