Processes and Technologies for Thermal and Thermochemical Energy Storage

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: closed (22 November 2022) | Viewed by 5030

Special Issue Editors


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Guest Editor
Department of Engineering (DING), University of Sannio, Piazza Roma 21, 82100 Benevento, Italy
Interests: concentrated solar thermal technologies; thermochemical energy storage processes; fluidized beds; calcium/chemical looping technologies; CO2 capture and utilization or storage; torrefaction; pyrolysis; gasification
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Guest Editor
Institute of Sciences and Technologies for Sustainable Energy and Mobility-CNR, P.le V. Tecchio 80, 80125 Naples, Italy
Interests: combustion, gasification and pyrolysis of solid fuels with a high content of volatile materials; the development of new configurations of multiple fluidized bed systems aimed at the chemical looping with oxygen uncoupling process; the development of new fluidized bed configurations aimed at converting concentrated solar energy into electrical energy and/or materials (chemical storage, solar fuels)
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples, Italy
Interests: entrained-flow gasification of solid fuels; dynamics of multi-phase flows; fluidization and fluidized bed systems; chemical reaction engineering; reactor design and operation; heterogeneous reaction kinetics; fluidized bed machining of mechanical parts
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are delighted to invite you to contribute to the Special Issue: “Processes and technologies for thermal and thermochemical energy storage”.

Transition towards a green and sustainable economy requires the development of strategies to efficiently exploit renewable energies and to reduce the waste heat in industrial processes. The intermittent nature of renewable energy sources such as solar and wind demands solutions to increase their dispatchability with the aim of promoting their extensive deployment and provide stability to the electric grid. The reduction of waste heat/energy at any temperature level is imperative to increase the competitiveness and environmental impact of already existing and forthcoming industrial processes.

Within this framework, thermal and thermochemical energy storage opens the path to uncoupling energy collection and its final use, thus allowing for the recovery of waste heat, increasing the dispatchability of renewable energies and management of excess renewable energy.

The aim of this Special Issue is to contribute to the development of processes and technologies suitable for these purposes. The topics of interest include but are not limited to:

  • Modelling and experimental studies on thermal and thermochemical energy storage technologies (e.g., material reactivity and kinetics, materials synthesis, reactor design, looping cycles);
  • Power to heat and chemicals;
  • The design, operation, and simulation of conventional and novel reactors/systems for energy storage (e.g., fluidized bed, fixed bed, entrained flow reactors, rotary kilns, cyclonic and vortex reactors, particle receivers);
  • Systems analysis and optimization of industrial processes;
  • Techno-economic analysis of energy storage systems (e.g., capital costs, levelized cost of energy).

Please join us and share your knowledge and research studies to contribute to the development of a green and sustainable economy.

With kind regards,

Dr. Claudio Tregambi
Dr. Roberto Solimene
Dr. Maurizio Troiano
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • renewable energy
  • concentrated solar thermal power
  • power to heat and chemicals
  • chemical reactions
  • techno-economic analysis
  • looping cycles
  • material synthesis and kinetics
  • reactor design
  • waste heat recovery

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Published Papers (2 papers)

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Research

20 pages, 3850 KiB  
Article
Parametric Sensitivity Analysis and Performance Evaluation of High-Temperature Macro-Encapsulated Packed-Bed Latent Heat Storage System Operating with Transient Inlet Boundary Conditions
by Mehdi Mehrtash and Ilker Tari
Processes 2022, 10(7), 1382; https://doi.org/10.3390/pr10071382 - 15 Jul 2022
Cited by 1 | Viewed by 1704
Abstract
This paper presents the results of comprehensive numerical analyses in the performance of a packed-bed latent heat storage (PBLHS) system in terms of key performance indicators, namely charging time, charging rate, charging capacity, and charging efficiency. Numerical simulations are performed for the packed [...] Read more.
This paper presents the results of comprehensive numerical analyses in the performance of a packed-bed latent heat storage (PBLHS) system in terms of key performance indicators, namely charging time, charging rate, charging capacity, and charging efficiency. Numerical simulations are performed for the packed bed region using a transient two-dimensional axisymmetric model based on the local thermal non-equilibrium (LTNE) approach. The model considers the variation in the inlet temperature of the system as these storage systems are typically integrated with solar collectors that operate with intermittent solar radiation intensity. The model results are validated using the experimental data for temperature distribution throughout the bed. The simulations are carried out while changing the operating parameters such as the capsule diameter, bed porosity, inlet velocity, and the height-to-diameter aspect ratio to investigate their impact on the performance indicators. Observations indicate that low porosity, large-sized capsules, low inlet velocity, and a low height-to-diameter aspect ratio increase the charging time. In terms of achieving a high charging rate, a bed with low porosity, small-sized capsules, a high inflow velocity, and a high height-to-diameter aspect ratio is deemed advantageous. It is shown that raising the flow velocity and the height-to-diameter aspect ratio can improve the charging efficiency. These findings provide recommendations for optimizing the design and operating conditions of the system within the practical constraints. Full article
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18 pages, 2958 KiB  
Article
A Combined Experimental and Numerical Thermo-Hydrodynamic Investigation of High-Temperature Fluidized-Bed Thermal Energy Storage
by Mehdi Mehrtash, Esra Polat Karadiken and Ilker Tari
Processes 2022, 10(6), 1097; https://doi.org/10.3390/pr10061097 - 1 Jun 2022
Cited by 3 | Viewed by 2169
Abstract
The present research describes the design, analysis, and modeling of an air-granular particle fluidized-bed system with dimensions of 0.08 m × 0.4 m × 0.08 m. The hydrodynamic and thermal experiments are designed to verify the numerical model previously created for this purpose. [...] Read more.
The present research describes the design, analysis, and modeling of an air-granular particle fluidized-bed system with dimensions of 0.08 m × 0.4 m × 0.08 m. The hydrodynamic and thermal experiments are designed to verify the numerical model previously created for this purpose. The gas-solid two-phase flow is described using a three-dimensional, two-fluid model based on the Eulerian–Eulerian method. The experiment is conducted, and the numerical model is updated for the new geometry while maintaining the solution parameters. Silica sand and sintered bauxite particles are employed in both experimental and numerical investigations to examine the behaviors of these particles. The hydrodynamic validity of the numerical model is established by the use of experimental findings for pressure drop and bed expansion ratio. The thermal tests are conducted with 585 K hot sand, and the temperature distribution in the bed is measured using K-type thermocouples and compared with the simulation data. Both the hydrodynamical and thermal experimental data appear to agree with the conclusions of the computational analyses. The validated model is then used to mimic the performance of the bed at elevated temperatures. The performance indicators are discussed and calculated for 973 K, demonstrating that as the temperature rises, the system efficiency increases. Full article
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