Performance Analysis of CCHP-TES System Based on Supply-demand Energy Matching

Introducing thermal energy storage (TES) is an important regulation method for improving the performance of the combined cooling, heating, and power (CCHP) system, because it contributes to load migration, reduction of capacity, improvement of efficiency, and realization of supply-demand energy matching. However, the current active regulation role of TES in the CCHP systems is not fully utilized, which limits its application and promotion. From the perspective of supply-demand energy matching and system active regulation, this paper constructs the CCHP-TES system configurations and proposes the system's installed capacity design and variable-condition operation control methods. Taking five types of user buildings in Beijing as examples, this paper compares and analyzes the energy-saving characteristics of the conventional non-TES CCHP system, the passive CCHP-TES system, and the CCHP-TES system constructed in this paper to provide references for practical engineering applications. © 2022, Science Press. All right reserved.