Our latest research article, focusing on dynamic modeling and control analysis of the sCO2 cycle Sofia, has recently been published in the prestigious Elsevier/Energy journal with an impact factor of 9. In the article, we introduced a comprehensive one-dimensional, thermo-hydraulic model of the sCO2 cycle Sofia, developed to investigate optimal control strategies and cycle behavior during its operation.
Our latest research article, focusing on dynamic modeling and control analysis of the sCO2 cycle Sofia, has recently been published in the prestigious Elsevier/Energy journal with an impact factor of 9. This article was recommended for publication by the organizational committee of "The European Conference on Supercritical CO2" (https://sco2.eu/), where it also received the Best Paper Award.
In the article, we introduced a comprehensive one-dimensional, thermo-hydraulic model of the sCO2 cycle Sofia, developed to investigate optimal control strategies and cycle behavior during its operation. This model, encompassing all system components from turbomachinery and heat exchangers to valves and piping with consideration for pressure and heat losses, serves as a key tool for understanding and optimizing the performance of the sCO2 cycle.
In developing the model, we utilized the Modelica language and the computational environment Dymola with the commercial library ClaRa+, supplemented by the UserInteraction library. This combination enabled us to conduct real-time simulations of transient states with the ability to adjust parameters during calculations. As a result, we gained a deeper understanding of system dynamics and behavior under various conditions.
During steady-state simulations, nominal parameters were achieved. Further computations focused on the start-up of the power turbine from standby mode. Analyzing the simulation results provides us with a detailed insight into different control methods and the dynamic response of system components during start-up, shutdown, and other transient states.
The study also revealed that careful manipulation of turbine valve regulation in conjunction with the intervention of the volume compensator is crucial for optimal system control and operation. Additionally, we found that the initial quantity of CO2 in the volume compensator influences the behavior of the entire system. This underscores the importance of careful system design and control methods for efficient and safe operation of the sCO2 cycle.
You can read the full article HERE.
