Transient thermodynamic modeling and economic analysis of an adiabatic compressed air energy storage (A-CAES) based on cascade packed bed thermal energy storage with encapsulated phase change materials

2021 ◽  
Vol 243 ◽  
pp. 114379
Author(s):  
Shadi Bashiri Mousavi ◽  
Mahdieh Adib ◽  
M. Soltani ◽  
Amir Reza Razmi ◽  
Jatin Nathwani
Keyword(s):  
Energy Storage ◽  
Economic Analysis ◽  
Phase Change ◽  
Thermodynamic Modeling ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Packed Bed ◽  
Compressed Air ◽  
Compressed Air Energy Storage

Analysis of Flow Through Packed Bed of Spheres Containing Phase Change Materials for Thermal Energy Storage Applications

2019 ◽  
Author(s):  
Vinit V. Prabhu ◽  
Ethan Languri ◽  
Kashif Nawaz
Keyword(s):  
Thermal Conductivity ◽  
Energy Storage ◽  
Response Time ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Response Rate ◽  
Packed Bed ◽  
Hot Water

Abstract The research on thermal energy storage (TES) systems have received a lot of attention in recent decades for sustainable use of thermal energy in various industrial and residential applications. The existing challenge in designing the TES is the response time of charging and discharging cycles that keeps these systems away from wide utilization in industries. Literature data show that beside the low thermal conductivity of most phase change materials (PCMs) as active media in TES systems, the poor flow distribution may be another factor affecting the response rate. This study aims to considerably reduce the response time by packing the PCMs in a bed of spheres made of high thermal conductivity material. The response rate during the charging cycle is studied numerically by passing hot water at 70 °C over the packed bed of spheres. The numerical analysis is performed using ANSYS Fluent 19. The PCM used in this study is a paraffin and has a melting point of 48 °C. The response rate of the system is studied and it is compared to other similar systems mentioned in literature. The amount of energy storage is also studied by changing the flow rate of water.

Stabilization of the outflow temperature of a packed-bed thermal energy storage by combining rocks with phase change materials

2014 ◽  
Vol 70 (1) ◽  
pp. 316-320 ◽  
Author(s):  
Giw Zanganeh ◽  
Mark Commerford ◽  
Andreas Haselbacher ◽  
Andrea Pedretti ◽  
Aldo Steinfeld
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Packed Bed

Advanced Compressed Air Energy Storage Plants With Utilization of Thermal Energy Storage Systems

1986 ◽  
Author(s):  
M. Nakhamkin ◽  
R. B. Schainker
Keyword(s):  
Energy Storage ◽  
Economic Analysis ◽  
Thermal Energy ◽  
Systems Engineering ◽  
Thermal Energy Storage ◽  
Storage Systems ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Technical And Economic Analysis ◽  
Thermal Energy Storage Systems

This paper presents results of engineering development for utilization of thermal energy storage (TES) for Compressed Air Energy Storage (CAES) plant applications. Presented results include the following: - Turbomachinery cycle optimization for TES application - TES systems engineering and optimization - Comparative technical and economic analysis of various CAES plant concepts with TES versus a conventional CAES plant concept The paper concludes that utilization of TES is feasible, practical and economically attractive.

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

2019 ◽  
Vol 6 ◽  
pp. 56-72
Author(s):  
Simon Tan ◽  
Andrew Wahlen
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Packed Bed ◽  
Compressed Air ◽  
Small Scale ◽  
Thermodynamic Efficiency ◽  
System Efficiency ◽  
Compressed Air Energy Storage ◽  
Round Trip

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

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