Definition of Performance Indicators for Thermal Energy Storage

2018 ◽  
pp. 227-242
Author(s):  
Valeria Palomba ◽  
Jaume Gasia ◽  
Joaquim Romaní ◽  
Andrea Frazzica ◽  
Luisa F. Cabeza
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Performance Indicators ◽  
Definition Of

scholarly journals Key performance indicators in thermal energy storage: Survey and assessment

2015 ◽  
Vol 83 ◽  
pp. 820-827 ◽  
Author(s):  
Luisa F. Cabeza ◽  
Esther Galindo ◽  
Cristina Prieto ◽  
Camila Barreneche ◽  
A. Inés Fernández
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Performance Indicators ◽  
Key Performance Indicators

scholarly journals A Review on the Performance Indicators and Influencing Factors for the Thermocline Thermal Energy Storage Systems

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8384
Author(s):  
Wanruo Lou ◽  
Lingai Luo ◽  
Yuchao Hua ◽  
Yilin Fan ◽  
Zhenyu Du
Keyword(s):  
Energy Storage ◽  
Influencing Factors ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Performance Indicators ◽  
Storage Systems ◽  
Renewable Energy Sources ◽  
Heat Transfer Fluid ◽  
Thermal Energy Storage Systems

Thermal energy storage (TES) system plays an essential role in the utilization and exploitation of renewable energy sources. Over the last two decades, single-tank thermocline technology has received much attention due to its high cost-effectiveness compared to the conventional two-tank storage systems. The present paper focuses on clarifying the performance indicators and the effects of different influencing factors for the thermocline TES systems. We collect the various performance indicators used in the existing literature, and classify them into three categories: (1) ones directly reflecting the quantity or quality of the stored thermal energy; (2) ones describing the thermal stratification level of the hot and cold regions; (3) ones characterizing the thermo-hydrodynamic features within the thermocline tanks. The detailed analyses on these three categories of indicators are conducted. Moreover, the relevant influencing factors, including injecting flow rate of heat transfer fluid, working temperature, flow distributor, and inlet/outlet location, are discussed systematically. The comprehensive summary, detailed analyses and comparison provided by this work will be an important reference for the future study of thermocline TES systems.

scholarly journals A New Methodological Approach for the Evaluation of Scaling Up a Latent Storage Module for Integration in Heat Pumps

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7470
Author(s):  
Gabriel Zsembinszki ◽  
Boniface Dominick Mselle ◽  
David Vérez ◽  
Emiliano Borri ◽  
Andreas Strehlow ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Performance Indicators ◽  
Methodological Approach ◽  
Scaling Up ◽  
Energy Performance ◽  
Heat Pumps ◽  
Normalization Methods ◽  
Comparison Of The Results

A clear gap was identified in the literature regarding the in-depth evaluation of scaling up thermal energy storage components. To cover such a gap, a new methodological approach was developed and applied to a novel latent thermal energy storage module. The purpose of this paper is to identify some key aspects to be considered when scaling up the module from lab-scale to full-scale using different performance indicators calculated in both charge and discharge. Different normalization methods were applied to allow an appropriate comparison of the results at both scales. As a result of the scaling up, the theoretical energy storage capacity increases by 52% and 145%, the average charging power increases by 21% and 94%, while the average discharging power decreases by 16% but increases by 36% when mass and volume normalization methods are used, respectively. When normalization by the surface area of heat transfer is used, all of the above performance indicators decrease, especially the average discharging power, which decreases by 49%. Moreover, energy performance in charge and discharge decreases by 17% and 15%, respectively. However, efficiencies related to charging, discharging, and round-trip processes are practically not affected by the scaling up.

scholarly journals Molten Salts for Sensible Thermal Energy Storage: A Review and an Energy Performance Analysis

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1197
Author(s):  
Adrián Caraballo ◽  
Santos Galán-Casado ◽  
Ángel Caballero ◽  
Sara Serena
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Performance Indicators ◽  
Molten Salts ◽  
Low Cost ◽  
Energy Performance ◽  
Energy Storage Materials ◽  
Concentrated Solar Power ◽  
Solar Salt

A comprehensive review of different thermal energy storage materials for concentrated solar power has been conducted. Fifteen candidates were selected due to their nature, thermophysical properties, and economic impact. Three key energy performance indicators were defined in order to evaluate the performance of the different molten salts, using Solar Salt as a reference for low and high temperatures. The analysis provided evidence that nitrate-based materials are the best choice for the former and chloride-based materials are best for the latter instead of fluoride and carbonate-based candidates, mainly due to their low cost.

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