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Thermodynamic analysis of a Brayton cycle and Rankine cycle arranged in series exploiting the cold exergy of LNG (liquefied natural gas)

Manuel Romero Gómez, Ramón Ferreiro Garcia, Javier Romero Gómez and José Carbia Carril

Energy, 2014, vol. 66, issue C, 927-937

Abstract: The LNG (liquefied natural gas) regasification process is a source of cold exergy capable of being exploited to improve the efficiency of energy conversion. This paper presents a novel power plant consisting of a combination of a CBC (closed Brayton cycle) with a SRC (steam Rankine cycle), arranged in series with regard to the power source, while exploiting the cold exergy available in the regasification process of LNG. The power plant is fuelled by a combustion system of natural gas where the flue gases firstly yield heat to the CBC, then to the SRC and finally to the combustion air by means of a heat recovery process.

Keywords: Brayton and Rankine cycles; Cold exergy; Energy and exergy efficiency; LNG; Series thermal cycles (search for similar items in EconPapers)
Date: 2014
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Handle: RePEc:eee:energy:v:66:y:2014:i:c:p:927-937