New Method of Exergy Analysis

Abstract

In a world rapidly running out of fossil fuel, the second law of thermodynamics together with the exergy principle may well turn out to be the central scientific truth of the twenty-first century. So far, traditional exergy analysis has focused simply on the absolute exergy and the trifling of mathematical formulae, only offering the magnitude of the exergy loss and some guidance, instead of detailed specific information on internal phenomena of each process. Here, we demonstrate a new method of exergy analysis, called EUD (Energy-Utilization Diagram) methodology by analyzing a current combined cycle plant and comparing it with the JIS method. It is clear that the graphical exergy analysis based on EUD is very easy and intuitive and that it may give important information even for a complex system.