Natural gas is one of the most important primary energy sources. It is expected to account for about 30% of total electricity generation by 2020 compared with 17% in 2000. Liquefied natural gas (LNG) is expected to have a large share in this expansion of use of natural gas. In the last years the total cost of LNG technology has decreased mainly due to improvements in the liquefaction process. The paper discusses some novel, gas-turbine-based concepts for combining LNG regasification with electricity generation. A comparative exergetic evaluation of the concepts is presented.

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