An integrated energy systems planning model based on exergy and exergoeconomic analysis

Amid the global energy structure's profound transformation and full implementation of the dual carbon strategy, optimal planning of integrated energy systems (IESs) is a cutting-edge energy topic. Most relevant studies rely on the first law of thermodynamics, focusing on energy conservation, while integration of energy quality, thermodynamics, and economics remains to be improved. This study takes the planning phase of IESs as the entry point and proposes an analytical method with exergy theory as the core and exergoeconomics as the tool. It proposes a closed-loop full-process planning framework of "theoretical modeling-scheme construction-economic analysis-scheme improvement" to develop a mature, replicable IES planning model, providing theoretical and technical support for the energy system's low-carbon transformation. Standard case simulations validate the efficacy of the closed-loop planning framework in enhancing system exergy efficiency and optimizing economic costs, providing engineering decision support and insights for multidisciplinary paradigm advancement.