Evaluation of a trigeneration system based on adiabatic compressed air energy storage and absorption heat pump: Thermodynamic analysis

Liu, Zhan; Yang, Xuqing; Liu, Xu; Wang, Wenbin; Yang, Xiaohu

doi:10.1016/j.apenergy.2021.117356

Cited by 21 publications

(4 citation statements)

References 42 publications

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“…After absorbing the compression heat, the hot oil (state 21) mixed together from the three cooler outlets is stored in the hot tank. The ACC inlet is equipped with a valve to ensure that the compressor operates at a constant back pressure at the design point and improve the service life of the compressor The cogeneration system operates in discharge mode at peak power consumption.…”

Section: System Descriptionmentioning

confidence: 99%

“…The compressed air first enters HT1 for preheating by the hot oil in the hot tank and then enters air turbine 1 (AT1) for expansion and power generation. Part of the low-temperature air from AT1 enters AT2 after being heated in HT2, and the other part of the low-temperature air provides cooling load for the system through cooler 4 (CL4) heat exchange, and then enters HT3 for heating (state 12), and finally enters AT2 for expansion power generation . The working process of HT4, HT5, CL5, CL6, and AT3 is similar to that of the above components, so it will not be repeated.…”

Section: System Descriptionmentioning

confidence: 99%

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Research on CCHP Design and Optimal Scheduling Based on Concentrating Solar Power, Compressed Air Energy Storage, and Absorption Refrigeration

Yang,

Zheng,

Chang

2023

ACS Omega

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In response to the country's "carbon neutrality, peak carbon dioxide emissions" task, this paper constructs an integrated energy system based on clean energy. The system consists of three subsystems: concentrating solar power (CSP), compressed air energy storage (CAES), and absorption refrigeration (AR). Among them, thermal energy storage equipment in the photothermal power generation system can alleviate the fluctuation of solar energy and provide a stable power supply for the system. The compression heat generated during the compression process of the CAES system can be recovered through heat transfer oil to provide a heat load. The compressed air in the air accumulator (ACC) expands in the air turbine to provide an electric load. The low-temperature exhaust gas discharged from the turbine can provide cool load. First, a multienergy system that includes CSP, CAES, and AR is built. Then, the system takes the lowest economic cost as the objective function and constructs the system day-ahead scheduling model. Finally, for data obtained from scene reduction, the commercial optimization software Gurobi is invoked through YALMIP to solve the model. The results show that the three subsystems achieve multienergy complementarity; system operating costs are reduced by 59.94% and fully absorb wind and solar energies by the system.

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Section: System Descriptionmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

Research on CCHP Design and Optimal Scheduling Based on Concentrating Solar Power, Compressed Air Energy Storage, and Absorption Refrigeration

Yang,

Zheng,

Chang

2023

ACS Omega

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“…Results show that efficiency is influenced by adiabatic efficiency of compressors and refrigerating water temperature difference. Liu et al (2021) proposed a trigeneration system based on A-CAES with an absorption heat pump, Through the increasing of storage pressure and optimizing thermal oil allocation, the system achieved improved RTE and exergy efficiency by 20.57%-31.69% and 23.64%-30.62%, respectively. Yan and Gao (2022) integrate an A-CAES system with an ejector refrigeration cycle to generate power and cooling.…”

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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“…There are some researches about integrated systems of CAES and other cycle subsystems for system performance improvement. Liu et al [13] evaluated a trigeneration system integrated adiabatic CAES with absorption heat pump. It was concluded that the roundtrip efficiency and exergy efficiency can be improved by increasing storage pressure.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic analysis of a new hybrid system combined heat and power integrated solid oxide fuel cell, gas turbine, Rankine steam cycle with compressed air energy storage

Taiheng¹,

Zhang²,

Zhao³

2022

Preprint

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The combined systems of solid oxide fuel cell-gas turbine (SOFC-GT) can operate with high efficiency and low carbon emissions. However, air compressors power consumption of SOFC-GT is big. In this study, a novel hybrid system integrated SOFC-GT with compressed air energy storage (CAES) is proposed. For the integrated system, the energy efficiency is improved in comparison to traditional SOFC-GT due to no air compressors power consumption in the discharging process. In addition, Rankine steam cycle (RSC) is applied to recover waste heat of SOFC-GT exhaust. The new system is simulated in Aspen plus software. The energy and exergy analysis is investigated. Then, the sensitivity analysis is also studied. The results show the cycle efficiency, electrical cycle efficiency and exergy cycle efficiency of new energy storage can reach 75.98%, 60.49% and 60.79%, respectively. Besides, SOFC has the largest exergy destruction of all components. In conclusion, the new system can provide theoretical guidance for efficient energy utilization.

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Evaluation of a trigeneration system based on adiabatic compressed air energy storage and absorption heat pump: Thermodynamic analysis

Cited by 21 publications

References 42 publications

Research on CCHP Design and Optimal Scheduling Based on Concentrating Solar Power, Compressed Air Energy Storage, and Absorption Refrigeration

Research on CCHP Design and Optimal Scheduling Based on Concentrating Solar Power, Compressed Air Energy Storage, and Absorption Refrigeration

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

Thermodynamic analysis of a new hybrid system combined heat and power integrated solid oxide fuel cell, gas turbine, Rankine steam cycle with compressed air energy storage

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