Study of cycle-to-cycle dynamic characteristics of adiabatic Compressed Air Energy Storage using packed bed Thermal Energy Storage

Wei He, Jihong Wang, Yang Wang, Yulong Ding, Haisheng Chen, Yuting Wu and Seamus Garvey

Energy, 2017, vol. 141, issue C, 2120-2134

Abstract: The main challenge for analysing system time-dependent performance of Compressed Air Energy Storage (CAES) is the complexity of the system dynamic characteristics arisen from the thermal, mechanical, chemical and electrical sub-processes. Identification of time-variant interactions between these sub-processes is essential to understand, optimise and control transient behaviour of CAES systems in practice. Therefore, this study proposed a new detailed cycle-to-cycle modelling framework to dynamically simulate an adiabatic CAES (A-CAES) system with packed bed Thermal Energy Storage (PBTES). The detailed cycle-to-cycle modelling framework resolves the dynamics of associated components, links the time-variant performance of the components in each cycle, and simulates how the system performs from the start-up to the steady-state cycle operation. The framework provides a basis for further time-dependent analysis and control of both the components and the system. Using the model, two A-CAES systems using packed bed thermal stores, one filled with rock and the other one filled with encapsulated phase change material (PCM), were analysed and compared. The time-resolved simulation indicated a higher steady-state cycle efficiency of 56.5% for the system with the PCM-filled PBTES, versus 53.2% of the system with the rock-filled PBTES.

Keywords: Adiabatic compressed air energy storage; Packed bed thermal energy storage; Cycle-to-cycle modelling; Steady-state performance (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:141:y:2017:i:c:p:2120-2134

DOI: 10.1016/j.energy.2017.11.016

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