Exergy analysis of a one-stage adiabatic compressed air energy storage system

Mozayeni, Hamidreza; Wang, Xiaolin; Negnevitsky, Michael

doi:10.1016/j.egypro.2019.02.145

Cited by 13 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Energy analysis gives a great insight into the system's performance although the energy analysis alone does not consider the inefficiencies of the system. One way to evaluate such inefficiencies is to apply an exergy analysis of the system [51,52]. Equation (13) represents the formulation of exergy efficiency.…”

Section: (C) Install Compressor Air Intakes In Coolest Locationsmentioning

confidence: 99%

Energy, Exergy, and Emission Analysis on Industrial Air Compressors

Nourin

Espindola

Selim

et al. 2021

Journal of Energy Resources Technology

View full text Add to dashboard Cite

Air compressors, a key fluid power technology, play an important role not only in industrial plants but also in office buildings, hospitals, and other types of facilities. The efficient use of the air compressor is crucial to control unnecessary inefficiencies that cause high energy consumption. This study aims to provide energy and exergy analysis on air compressors for different industries. Detailed case studies are also analyzed. The case study focuses on the energy and exergy analysis of the compressed air system of foundry industries. The results indicate that applying the six improvement recommendations yield significant amounts of energy and cost savings as well as significant improvements in the overall performance of the system. The payback periods for different recommendations are economically feasible and worthwhile to use. The suggested improvement methods can provide high costs with a low payback period.

show abstract

Section: (C) Install Compressor Air Intakes In Coolest Locationsmentioning

confidence: 99%

Energy, Exergy, and Emission Analysis on Industrial Air Compressors

Nourin

Espindola

Selim

et al. 2021

Journal of Energy Resources Technology

View full text Add to dashboard Cite

show abstract

“…Moreover, according to the economic analysis, the PH-CAES with constant pressure has a better economy than the CAES and the PHES system because the former has a simple structure. 116 The operational characteristics of a CAHES system coupled with solar energy are further investigated under different operational modes by Bi et al 34,35 Recently, Mozayeni et al 117,118 established a complete thermodynamic model for investigating the thermal characteristics and exergy of the PH-CAES system. The authors investigated the influence of some important parameters like pre-set pressure, storage pressure, pump/ hydro-turbine efficiency, and air compression mode on the system performance.…”

Section: Ph-caes Systemmentioning

confidence: 99%

Various methodologies to improve the energy efficiency of a compressed air energy storage system

et al. 2021

View full text Add to dashboard Cite

Intermittency characteristic of renewable energy sources can be resolved using an energy storage technology. The function of the energy storage system is to store the excess energy that is produced from various renewable energy sources during the off‐peak hours and releases the same energy during the peak hours. The energy that is produced from the renewable energy sources can be stored in different forms such as Mechanical, Electrical, Electrochemical, Thermal, Chemical energy etc. Among all these forms of stored energy, a CAES technology under the Mechanical form of energy is the most cost effective for the bulk energy storage purpose. It involves a combined operation of various components such as Compressor/Expander, Gas turbine, combustion chambers, heat exchangers, generator unit, and underground compressed air storage. This article focuses to review the detail of various CAES systems such as D‐CAES, A‐CAES, I‐CAES etc. Additionally, it presents various technologies that are used to improve the energy efficiency and applicability of the CAES system. It is found that a maximum RTE of the C‐CAES, A‐CAES, and I‐CAES are 54%, 71%, and 80%, respectively. In addition, the RTE of the modified CAES systems such as LP‐CAES, PH‐CAES, and SC‐CAES are about 90%, 80%, and 60 to 80%, respectively.

show abstract

“…Assumes ideal TES (100% efficiency) 5 [9][10][11][12][13] Assigns TES a fixed efficiency 12 [14][15][16][17] Efficiency of TES modelled as dependent on multiple parameters including Thermal Conductivity 7 [18][19][20][21][22][23][24] Analyses effect of various insulators and fully charged idle time on overall efficiency 0 -…”

Section: Modelling Of Tes Insulation Across Acaes Research Number Of mentioning

confidence: 99%

Adiabatic Compressed Air Energy Storage: An analysis on the effect of thermal energy storage insulation thermal conductivity on round-trip efficiency

Tan¹,

Wahlen²

2019

PAMR

View full text Add to dashboard Cite

Compressed Air Energy Storage (CAES) has demonstrated promising potential for widescale use in the power distribution network, especially where renewables are concerned.Current plants are inefficient when compared to other technologies such as battery and pumped hydro. Presently, the greatest round-trip efficiency of any commercial CAES plant is 54% (McIntosh Plant), while the highest energy efficiency of any experimental plant is 66-70% (ADELE Project). So far, Adiabatic CAES systems have yielded promising results with round-trip efficiencies generally ranging between 65-75%, with some small-scale system models yielding round-trip efficiencies exceeding 90%. Thus far, minimal research has been devoted to analysing the thermodynamic effects of the thermal energy storage (TES) insulation. This metastudy identifies current industry and research trends pertaining to ACAES with a focus on the TES insulation supported by model simulations. Charged standby time and insulation of the TES on overall system efficiency was determined by performing a thermodynamic analysis of an ACAES system using packed bed heat exchangers (PBHE) for TES. The results provide insight into the effect various insulators, including concrete, glass wool and silica-aerogel, have on exergy loss in the TES and overall system efficiency. TES insulation should be carefully considered and selected according to the expected duration of fully charged standby time of the ACAES system. Keywords: Compressed air energy storage; adiabatic compressed air energy storage; thermal energy storage; thermodynamic efficiency; renewable energy storage, packed bed heat exchanger

show abstract

Exergy analysis of a one-stage adiabatic compressed air energy storage system

Cited by 13 publications

References 14 publications

Energy, Exergy, and Emission Analysis on Industrial Air Compressors

Energy, Exergy, and Emission Analysis on Industrial Air Compressors

Various methodologies to improve the energy efficiency of a compressed air energy storage system

Adiabatic Compressed Air Energy Storage: An analysis on the effect of thermal energy storage insulation thermal conductivity on round-trip efficiency

Contact Info

Product

Resources

About