Cryogenic power conversion with regasification of LNG in a gas turbine plant
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Abstract The gas turbine combined cycle continues to gain acceptance throughout the world as a reliable, flexible and efficient baseload generation plant, particularly where natural gas is available. In this work, a cryogenic circuit is combined with a gas turbine power plant burning LNG. A computer program is devised to calculate performance, namely, power and overall efficiency for the combined system over a wide range of operating variables Rc and T3 covering design and off-design loading conditions. Thermoeconomic evaluation of a 2000 MWe gas turbine power plant shows that addition of a cryogenic circuit may save about 62,595 tons/yr of LNG and 39 MW of power. The payback period is less than 1.5 yr.
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