Investigations on thermochemical energy storage based on technical grade manganese-iron oxide in a lab-scale packed bed reactor

Solar Energy ◽  
2017 ◽  
Vol 153 ◽  
pp. 200-214 ◽  
Author(s):  
Michael Wokon ◽  
Andreas Kohzer ◽  
Marc Linder
Keyword(s):  
Energy Storage ◽  
Iron Oxide ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Technical Grade

Reduction of iron–manganese oxide particles in a lab-scale packed-bed reactor for thermochemical energy storage

2020 ◽  
Vol 221 ◽  
pp. 115700 ◽  
Author(s):  
Marziyeh Hamidi ◽  
Vincent M. Wheeler ◽  
Xiang Gao ◽  
John Pye ◽  
Kylie Catchpole ◽  
...  
Keyword(s):  
Energy Storage ◽  
Manganese Oxide ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Reduction Of Iron ◽  
Oxide Particles ◽  
Iron Manganese

Transient discrete-granule packed-bed reactor model for thermochemical energy storage

2014 ◽  
Vol 117 ◽  
pp. 465-478 ◽  
Author(s):  
Stefan Ströhle ◽  
Andreas Haselbacher ◽  
Zoran R. Jovanovic ◽  
Aldo Steinfeld
Keyword(s):  
Energy Storage ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Reactor Model

Parametric Study of Split Flow Cylindrical Packed Bed Reactor for High-Temperature Thermochemical Energy Storage Using Cobalt Oxide Redox Reaction

2019 ◽  
Author(s):  
Nasser Vahedi ◽  
Alparslan Oztekin
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Pressure Drop ◽  
Parametric Study ◽  
Redox Reaction ◽  
Packed Bed ◽  
Reactor Design ◽  
Packed Bed Reactor ◽  
Reactor Performance ◽  
Split Flow

Abstract Thermal energy storage has become an integral part of Concentrated Solar Power (CSP) plants to guarantee continuous supply of power demand. For cost-effective solar power generation, the size and operating temperatures of CSP plants should be increased. Thermochemical energy storage (TCES) is the only available solution to meet energy density and high-temperature requirements. Air is mostly used as Heat Transfer Fluid (HTF) for high-temperature CSP plants. For the air-based system, metal redox reactions are good candidates as storage reactant. Application of metal oxide gas-solid redox reaction in storage systems requires an efficient reactor design. Cost-effectiveness and simplicity have made packed bed reactors a viable candidate for high-temperature applications. The high-pressure drop along the bed is the main drawback of such reactors preventing them from widespread applications. Split flow design modification could aid in reducing pressure drop while providing more flexibility in reactor performance control. A cylindrical split-flow packed bed reactor with an annulus for HTF flow is considered as a modified reactor design. The transient two-dimensional axisymmetric numerical model is developed for solving mass, momentum, and energy equations for both gas and solid phases using suitable reaction kinetics for the cobalt oxide redox reaction. A parametric study is performed on cylindrical-shaped split-flow reactor design as a basis for future optimization for complete storage cycle. The effect of split flow ratio and side-channel width on reactor performance are considered. It is shown that both parameters could be used effectively to design and optimize the reactor.

scholarly journals Numerical Analysis and Parametric Optimisation of Heat Release from a Packed Bed (MgSO4) Thermochemical Reactor

2020 ◽  
Vol 8 (5) ◽  
pp. 820-826
Keyword(s):  
Energy Storage ◽  
Energy Release ◽  
Storage Temperature ◽  
Particle Diameter ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Hydration Reaction ◽  
Moist Air ◽  
Term Energy

Thermochemical energy storage is one of the process which is capable of both short term and long term energy storage. Incorporating this storage method with solar energy is important when we considering seasonal or long term thermal energy storage. Thermochemical energy storage uses chemical reactions to store and release the energy. The charging or storage temperature of the thermochemical material (TCM), porosity of the reactor bed, concentration of reactants etc. are some of the important factors which affects the storage and release of the energy of a TCM. In this work we investigate the energy release from MgSO4 by modelling the hydration reaction of MgSO4 in a packed bed reactor with continuous flow of moist air through the bed. It is observed that the parameters such as porosity of the reactor bed, mass flow rate of moist air, particle diameter, concentration of water vapour etc. play an important role on the energy release from the TCM. Thaguchi method is used to optimize these parameters. The porosity of the reactor bed and the particle size of the TCM are found to be crucial in energy release

scholarly journals Performance of an Indirect Packed Bed Reactor for Chemical Energy Storage

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5149
Author(s):  
Tiziano Delise ◽  
Salvatore Sau ◽  
Anna Chiara Tizzoni ◽  
Annarita Spadoni ◽  
Natale Corsaro ◽  
...  
Keyword(s):  
Energy Storage ◽  
Heat Exchanger ◽  
Stokes Equations ◽  
Storage Period ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Solar Irradiation ◽  
Heat Transfer Fluid ◽  
Inlet Temperature ◽  
Symmetrical Configuration

Chemical systems for thermal energy storage are promising routes to overcome the issue of solar irradiation discontinuity, helping to improve the cost-effectiveness and dispatchability of this technology. The present work is concerned with the simulation of a configuration based on an indirect-packed bed heat exchanger, for which few experimental and modelling data are available about practical applications. Since air shows advantages both as a reactant and heat transfer fluid, the modelling was performed considering a redox oxide based system, and, for this purpose, it was considered a pelletized aluminum/manganese spinel. A symmetrical configuration was selected and the calculation was carried out considering a heat duty of 125 MWth and a storage period of 8 h. Firstly, the heat exchanger was sized considering the mass and energy balances for the discharging step, and, subsequently, air inlet temperature and mass flow were determined for the charging step. The system performances were then modelled as a function of the heat exchanger length and the charging and discharging time, by solving the relative 1D Navier-Stokes equations. Despite limitations in the global heat exchange efficiency, resulting in an oversize of the storage system, the results showed a good storage efficiency of about 0.7.

Continuous production of a chiral amine in a packed bed reactor with co-immobilized amine dehydrogenase and formate dehydrogenase

2021 ◽  
Vol 407 ◽  
pp. 127065
Author(s):  
Robert D. Franklin ◽  
Joshua A. Whitley ◽  
Adam A. Caparco ◽  
Bettina R. Bommarius ◽  
Julie A. Champion ◽  
...  
Keyword(s):  
Formate Dehydrogenase ◽  
Continuous Production ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Chiral Amine ◽  
Amine Dehydrogenase

Ternary Nanocomposites of Reduced Graphene Oxide, Polyaniline, and Iron Oxide Applied for Energy Storage

2021 ◽  
Author(s):  
Vitor H. N. Martins ◽  
Nicolás M. S. Siqueira ◽  
Jéssica E. S. Fonsaca ◽  
Sergio H. Domingues ◽  
Victor H. R. Souza
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Iron Oxide ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene
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