Comparison Between Speco-Based and Functional Exergoeconomic Approaches Available to Purchase

Various exergoeconomic approaches have been developed in the last 20 years. These approaches include the ones by Frangopoulos, Lazzaretto, Tsatsaronis, Valero, von Spakovsky and their co-workers. The paper discusses exergoeconomic approaches based on specific costs (SPECO), thermoeconomic functional analysis (TFA) and engineering functional analysis (EFA). Simple examples are used to demonstrate the differences among these approaches.