Thermodynamic and economic investigation of a novel integration of the absorption-recompression refrigeration system with compressed air energy storage (CAES)

Razmi, Amir Reza; Soltani, M.; Aghanajafi, Cyrus; Torabi, Morteza

doi:10.1016/j.enconman.2019.03.010

Cited by 201 publications

(22 citation statements)

References 31 publications

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“…The indirect cost includes contractor cost, owner cost, fee, and insurance. A list of cost functions of components is shown as follows [22][23][24][25][26][27] :…”

Section: Pelton Turbinementioning

confidence: 99%

Performance investigation of a novel near‐isothermal compressed air energy storage system with stable power output

Zhao

Lai

et al. 2020

Int J Energy Res

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As one of the grid-scale energy storage technologies, compressed air energy storage (CAES) is promising to facilitate the permeability of renewable energies. By integrating CAES into renewable sources, the fluctuation and intermittence of renewable energies could be effectively restrained. Among various CAES system configurations, isothermal CAES (I-CAES) is considered as a most competitive technology with expected high efficiency. However, most of the existing I-CAES systems have trouble in keeping a stable power output. To address this issue, a novel near-isothermal CAES system is proposed in this article to acquire a near stable power output. Imitating the concept of hydraulic accumulator, a two pressure vessels structure is employed to maintain the gas pressure stable during discharging. Besides, the turbine power output can be controlled by adjusting the liquid flow rate of the Pelton turbine under this near constant pressure condition. Based on the system transient model and economic model, the system components transient behavior, parametric analysis, off-design performance analysis and economic evaluation issues are also conducted. Results show that system round trip efficiency (RTE) with 61.42% and energy density (ED) with 0.2015 kWh/m 3 can be achieved under design condition. In the discharge process, the gas pressure in vessel varies in a small range, from 68 to 72 bar, which is relatively stable. The power output from Pelton turbine can be maintained around 1 kW. Meanwhile, the initial pressure, the pipe diameter, and the spraying flow rates of circulating pumps have significant effects on system RTE and ED. Furthermore, the Pelton turbine power output level can be adjusted by adding jets number, and the higher storage pressure can make the power output unsteady. Abbreviations: A-CAES, adiabatic compressed air energy storage; CAES, compressed air energy storage; D-CAES, diabatic compressed air energy storage; ED, energy density; EES, electrical energy storage; GLIDES, ground-level integrated diverse energy storage; HyPES, hydro-pneumatic energy storage; I-CAES, isothermal compressed air energy storage; LCOE, levelized cost of electricity; O&M, operation and maintenance cost; PD, positive displacement; PHS, pumped hydro storage; RTE, round trip efficiency; TES, thermal energy storage.

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“…The indirect cost includes contractor cost, owner cost, fee, and insurance. A list of cost functions of components is shown as follows [22][23][24][25][26][27] :…”

Section: Pelton Turbinementioning

confidence: 99%

Performance investigation of a novel near‐isothermal compressed air energy storage system with stable power output

Zhao

Lai

et al. 2020

Int J Energy Res

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“…Since no chemical reactions happened between streams and the diffusion effect of ammonia in water for solutions was negligible, only the thermophysical exergy was considered [18,28,33]. On that basis, the specific exergy of the relevant stream at average temperature T is defined as [8,21,34]:…”

Section: Exergy Balancementioning

confidence: 99%

“…For any controlled thermal process in a system, the exergy balance equation then could be expressed by [15,21,34]:…”

Section: Exergy Balancementioning

confidence: 99%

Energetic and Exergetic Investigations of Hybrid Configurations in an Absorption Refrigeration Chiller by Aspen Plus

2019

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In the present study, a steady-state simulation model was built and validated by Aspen Plus to assess the performance of an absorption refrigeration chiller according to the open literature. Given the complex heat transfer happening in the absorbers and the generator, several assumptions were proposed to simplify the model, for which a new parameter ε l i q was introduced to describe the ratio of possible heat that could be recovered from the absorption and heat-transferring process in the solution cooling absorber. The energetic and the exergetic investigations of a basic cycle and hybrid cycles were conducted, in which the following parameters were analyzed: coefficient of performance (COP), exergetic efficiency, exergy destruction, and irreversibility. According to the results, the basic cycle exhibited major irreversibility in the absorbers and the generator. Subsequently, two proposed novel configurations were adopted to enhance its performance; the first (configuration 1) involved a compressor between a solution heat exchanger and a solution cooling absorber, and the second (configuration 2) involved a compressor between a rectifier and a condenser. The peak COP and the overall exergetic efficiency (η) of configuration 1 were found to be better, increasing by 15% and 5.5%, respectively, and those of configuration 2 were also upregulated by 5% and 4%, respectively. The rise in intermediate compressor ratio not only reduced the driving generator temperature of both configurations but also expanded the operating range of the system under configuration 1, thus proving their feasibility in waste heat sources and the superiority of configuration 1. Detailed information about the optimal state for hybrid cycles is also presented.

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“…1 While burning them provides a significant amount of energy, it is known to be the main source of releasing carbon dioxide into the atmosphere, a greenhouse gas blamed to trigger global warming. 2,3 Despite burning fossil fuels, there are other approaches to generate electricity in an environmentally benign way; hydro energy, wind turbines, geothermal, and solar energy. [4][5][6] Among the noted methods, solar energy has been highlighted by providing an inexhaustible, nonpolluting, and safe source of energy.…”

Section: Introductionmentioning

confidence: 99%

Novel analysis of second law and irreversibility for a solar power plant using heliostat field and molten salt

Zolfagharnasab

Aghanajafi

Kavian

et al. 2020

Energy Science & Engineering

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Thermodynamic and economic investigation of a novel integration of the absorption-recompression refrigeration system with compressed air energy storage (CAES)

Cited by 201 publications

References 31 publications

Performance investigation of a novel near‐isothermal compressed air energy storage system with stable power output

Performance investigation of a novel near‐isothermal compressed air energy storage system with stable power output

Energetic and Exergetic Investigations of Hybrid Configurations in an Absorption Refrigeration Chiller by Aspen Plus

Novel analysis of second law and irreversibility for a solar power plant using heliostat field and molten salt

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