A dynamic interactive optimization model of CCHP system involving demand-side and supply-side impacts of climate change. Part II: Application to a hospital in Shanghai, China

Abstract

The operation optimization of a CCHP system of a hospital in Shanghai, China, was used as a study case for demonstrating the feasibility and applicability of the dynamic interactive model (as introduced in Part I of this article). This model comprehensively considered the impact of climate change on users’ demand and power generation of equipment, coupling these aspects to the operational optimization of CCHP system. The obtained results demonstrated that the increase of temperature would pose a large influence on user demand and impair the operation efficiency of gas turbine. Moreover, the implementation of energy cascade utilization mechanism and tiered electricity price would also affect operation schedule of a CCHP system. Compared with traditional optimization model, the developed dynamic interactive model could effectively overcome the problem of insufficient cooling and excessive heating in both summer and winter seasons under climate change, and achieve stable energy supply. Overall, the proposed model could help improve system economy, realize efficient utilization of energy and enhance energy-supply stability, which is of high value for supporting long-term sustainable management of energy supply systems under climate change.