LNG-Based Cogeneration Systems: Part 2—Advanced Exergy-Based Analyses of a Concept

Liquefied Natural Gas (LNG) is expected to contribute in future more than in the past to the overall energy supply in the world. The paper is the second part of a two-part presentation. In the first one, some novel concepts for combining LNG regasification with the generation of electricity are discussed, whereas in the second part advanced exergy-based analyses are applied to the most favorable LNG–based cogeneration system. These analyses include an advanced exergy analysis and an advanced exergoeconomic analysis. With the aid of these analyses the interactions among system components as well as the potential for improving the thermodynamic efficiency and the potential for reducing the overall cost will be revealed. The objective of this paper is to demonstrate (a) the potential for generating electricity while regasifying LNG, and (b) the capabilities associated with advanced exergy-based methods.Copyright © 2009 by ASME