Estimations of energy density and storage efficiency for cascading adsorption heat storage concepts

2019 ◽  
Vol 105 ◽  
pp. 59-65 ◽  
Author(s):  
Matthias S. Treier ◽  
Gunther Munz ◽  
Andreas Velte ◽  
Stefan K. Henninger ◽  
Ferdinand P. Schmidt
Keyword(s):  
Energy Density ◽  
Heat Storage ◽  
Adsorption Heat ◽  
Storage Efficiency ◽  
And Storage

scholarly journals Energy density and storage capacity cost comparison of conceptual solid and liquid sorption seasonal heat storage systems for low-temperature space heating

2017 ◽  
Vol 76 ◽  
pp. 1314-1331 ◽  
Author(s):  
Luca Scapino ◽  
Herbert A. Zondag ◽  
Johan Van Bael ◽  
Jan Diriken ◽  
Camilo C.M. Rindt
Keyword(s):  
Energy Density ◽  
Low Temperature ◽  
Storage Capacity ◽  
Heat Storage ◽  
Storage Systems ◽  
Cost Comparison ◽  
Space Heating ◽  
Seasonal Heat ◽  
Capacity Cost ◽  
And Storage

scholarly journals Influence of Kubas-type interaction of B–Ni codoped graphdiyne with hydrogen molecules on desorption temperature and storage efficiency

2020 ◽  
Vol 16 ◽  
pp. 100421
Author(s):  
E.V. Anikina ◽  
A. Banerjee ◽  
V.P. Beskachko ◽  
R. Ahuja
Keyword(s):  
Storage Efficiency ◽  
Desorption Temperature ◽  
Hydrogen Molecules ◽  
Type Interaction ◽  
And Storage

scholarly journals The Impact of Active and Passive Thermal Management on the Energy Storage Efficiency of Metal Hydride Pairs Based Heat Storage

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3006
Author(s):  
Serge Nyallang Nyamsi ◽  
Ivan Tolj
Keyword(s):  
Heat Transfer ◽  
Energy Storage ◽  
Thermal Management ◽  
Metal Hydride ◽  
Heat Storage ◽  
Energy Storage Density ◽  
Storage Efficiency ◽  
Transfer Enhancement ◽  
Storage Density ◽  
Energy Storage Efficiency

Two-tank metal hydride pairs have gained tremendous interest in thermal energy storage systems for concentrating solar power plants or industrial waste heat recovery. Generally, the system’s performance depends on selecting and matching the metal hydride pairs and the thermal management adopted. In this study, the 2D mathematical modeling used to investigate the heat storage system’s performance under different thermal management techniques, including active and passive heat transfer techniques, is analyzed and discussed in detail. The change in the energy storage density, the specific power output, and the energy storage efficiency is studied under different heat transfer measures applied to the two tanks. The results showed that there is a trade-off between the energy storage density and the energy storage efficiency. The adoption of active heat transfer enhancement (convective heat transfer enhancement) leads to a high energy storage density of 670 MJ m−3 (close to the maximum theoretical value of 755.3 MJ m−3). In contrast, the energy storage efficiency decreases dramatically due to the increase in the pumping power. On the other hand, passive heat transfer techniques using the bed’s thermal conductivity enhancers provide a balance between the energy storage density (578 MJ m−3) and the energy efficiency (74%). The utilization of phase change material as an internal heat recovery medium leads to a further reduction in the heat storage performance indicators (142 MJ m−3 and 49%). Nevertheless, such a system combining thermochemical and latent heat storage, if properly optimized, can be promising for thermal energy storage applications.

scholarly journals Survey Summary on Salts Hydrates and Composites Used in Thermochemical Sorption Heat Storage: A Review

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3105
Author(s):  
Mohamed Zbair ◽  
Simona Bennici
Keyword(s):  
Composite Materials ◽  
Energy Density ◽  
Low Temperature ◽  
Mass Transport ◽  
Lower Energy ◽  
Heat Storage ◽  
Porous Matrix ◽  
Salt Hydrates ◽  
Sorption Heat ◽  
The Stability

To improve the proficiency of energy systems in addition to increasing the usage of renewable energies, thermal energy storage (TES) is a strategic path. The present literature review reports an overview of the recent advancements in the utilization of salt hydrates (single or binary mixtures) and composites as sorbents for sorption heat storage. Starting by introducing various heat storage systems, the operating concept of the adsorption TES was clarified and contrasted to other technologies. Consequently, a deep examination and crucial problems related to the different types of salt hydrates and adsorbents were performed. Recent advances in the composite materials used in sorption heat storage were also reviewed and compared. A deep discussion related to safety, price, availability, and hydrothermal stability issues is reported. Salt hydrates display high theoretical energy densities, which are promising materials in TES. However, they show a number of drawbacks for use in the basic state including low temperature overhydration and deliquescence (e.g., MgCl2), high temperature degradation, sluggish kinetics leading to a low temperature rise (e.g., MgSO4), corrosiveness and toxicity (e.g., Na2S), and low mass transport due to the material macrostructure. The biggest advantage of adsorption materials is that they are more hydrothermally stable. However, since adsorption is the most common sorption phenomenon, such materials have a lower energy content. Furthermore, when compared to salt hydrates, they have higher prices per mass, which reduces their appeal even further when combined with lower energy densities. Economies of scale and the optimization of manufacturing processes may help cut costs. Among the zeolites, Zeolite 13X is among the most promising. Temperature lifts of 35–45 °C were reached in lab-scale reactors and micro-scale experiments under the device operating settings. Although the key disadvantage is an excessively high desorption temperature, which is problematic to attain using heat sources, for instance, solar thermal collectors. To increase the energy densities and enhance the stability of adsorbents, composite materials have been examined to ameliorate the stability and to achieve suitable energy densities. Based on the reviewed materials, MgSO4 has been identified as the most promising salt; it presents a higher energy density compared to other salts and can be impregnated in a porous matrix to prepare composites in order to overcome the drawbacks connected to its use as pure salt. However, due to pore volume reduction, potential deliquescence and salt leakage from the composite as well as degradation, issues with heat and mass transport can still exist. In addition, to increase the kinetics, stability, and energy density, the use of binary salt deposited in a porous matrix is suitable. Nevertheless, this solution should take into account the deliquescence, safety, and cost of the selected salts. Therefore, binary systems can be the solution to design innovative materials with predetermined sorption properties adapted to particular sorption heat storage cycles. Finally, working condition, desorption temperature, material costs, lifetime, and reparation, among others, are the essential point for commercial competitiveness. High material costs and desorption temperatures, combined with lower energy densities under normal device operating conditions, decrease their market attractiveness. As a result, the introduction of performance metrics within the scientific community and the use of economic features on a material scale are suggested.

Theoretical and experimental investigation of the performance of adsorption heat storage system

2019 ◽  
Vol 147 ◽  
pp. 10-28 ◽  
Author(s):  
Hesham O. Helaly ◽  
Mohamed M. Awad ◽  
Ibrahim I. El-Sharkawy ◽  
Ahmed M. Hamed
Keyword(s):  
Experimental Investigation ◽  
Heat Storage ◽  
Storage System ◽  
Adsorption Heat

Effects of multilayer porous ceramics on thermochemical energy conversion and storage efficiency in solar dry reforming of methane reactor

2020 ◽  
Vol 265 ◽  
pp. 114799 ◽  
Author(s):  
Hao Zhang ◽  
Yong Shuai ◽  
Bachirou Guene Lougou ◽  
Boshu Jiang ◽  
Fuqiang Wang ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Porous Ceramics ◽  
Dry Reforming ◽  
Dry Reforming Of Methane ◽  
Storage Efficiency ◽  
Energy Conversion And Storage ◽  
And Storage

MXene Ti3C2Tx for phase change composite with superior photothermal storage capability

2019 ◽  
Vol 7 (23) ◽  
pp. 14319-14327 ◽  
Author(s):  
Xiaoqiao Fan ◽  
Lu Liu ◽  
Xin Jin ◽  
Wentao Wang ◽  
Shufen Zhang ◽  
...  
Keyword(s):  
Phase Change ◽  
Near Infrared ◽  
Infrared Region ◽  
Storage Efficiency ◽  
Sunlight Irradiation ◽  
Photothermal Conversion ◽  
Enhanced Absorption ◽  
Near Infrared Region ◽  
And Storage

A novel composite PCM was facilely synthesized, which exhibited enhanced absorption peaks at visible and near-infrared region, and the photothermal conversion and storage efficiency was outstanding under simulated and actual sunlight irradiation.

scholarly journals Sensitivity Analysis of the Energy Density in a Thermo Chemical Heat Storage Device

2014 ◽  
Vol 48 ◽  
pp. 405-412 ◽  
Author(s):  
Syntia Metchueng Kamdem ◽  
Kévyn Johannes ◽  
Frédéric Kuznik ◽  
Hassan Bouia ◽  
Jean Jacques Roux
Keyword(s):  
Sensitivity Analysis ◽  
Energy Density ◽  
Heat Storage ◽  
Storage Device ◽  
Chemical Heat

Effects of permeability heterogeneity on CO2injectivity and storage efficiency coefficient

2015 ◽  
Vol 6 (1) ◽  
pp. 112-124 ◽  
Author(s):  
Liang Tian ◽  
Zhibing Yang ◽  
Fritjof Fagerlund ◽  
Auli Niemi
Keyword(s):  
Efficiency Coefficient ◽  
Storage Efficiency ◽  
Permeability Heterogeneity ◽  
And Storage
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