Enhancing efficiency of a renewable energy assisted system with adiabatic compressed-air energy storage by application of multiple Kalina recovery cycles

Piri, Ali; Aghanajafi, Cyrus; Sohani, Ali

doi:10.1016/j.est.2023.106712

Cited by 15 publications

(1 citation statement)

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“…Optimum design achieved 47.17% exergy efficiency. Piri et al (2023) introduced an innovative A-CAES system with multiple KC, improving power production by 3.38% and round trip exergy (RTE) efficiency by 3.12%, offering a significant enhancement in system performance. Li et al (2023) introduced an innovative CAES system that utilizes a KC to effectively utilize pre-compression heat, achieving a 2.7% improvement in electrical efficiency.…”

Section: Introductionmentioning

confidence: 99%

Analysis of compression/expansion stage on compressed air energy storage cogeneration system

An,

Li,

Lin

et al. 2023

Front. Energy Res.

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Compressed Air Energy Storage (CAES) technology has risen as a promising approach to effectively store renewable energy. Optimizing the efficient cascading utilization of multi-grade heat can greatly improve the efficiency and overall system performance. Particularly, the number of compressor and expander stages is a critical factor in determining the system’s performance. In this study, we focused on the Advanced Adiabatic Compressed Air Energy Storage system with Combined Heat and Power (AA-CAES -CHP). Both economic and thermodynamic models were established for the AA-CAES-CHP system. To systematically study the effects of compression and expansion stages, the influence of 3 different compressor stages and expander stages was comprehensively analyzed under 4 operating conditions. Key findings reveal that the count of compressor and expander stages have a notable impact on the exergy losses of the AA-CAES-CHP system. As for the investment cost, the proportion of investment cost for expanders decreases when the stage numbers of compressors and expanders are the same. Furthermore, both thermodynamic and economic characteristics allow us to optimize the AA-CAES-CHP system’s performance. One of our cases demonstrates that doubling the air mass flow rate results in a doubled total energy output with a relatively modest increase (41.1%–65.1%) in the total investment cost.

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Section: Introductionmentioning

confidence: 99%