Multi-scale optimization of cogeneration system based on S-CO2 Brayton cycle

Inhalt:
In this paper, the related theories of physical modeling of thermal fluids based on Modelica language are studied, and the existing model libraries are reprogrammed around the supercritical CO2 Bretton system. The model of supercritical CO2 circulation system is built and validated, and the factors affecting the operating efficiency of the system are studied. Coupled with the CCHP system, the three-stage synergistic optimization of the CCHP system as a whole is carried out, and the optimal solutions of energy utilization, annual operating cost and greenhouse gas emission are obtained.