fluidized bed chemical energy storage
Ca(OH) 2 /CaO reversible reaction in a fluidized bed reactor for thermochemical heat storage …
Thermal energy storage (TES) is a key factor for increasing the efficiency of concentrated solar power plants. TES using a reversible chemical reaction appears to be a promising technology for high energy density thermal storage (100–500 kW h m −3), at high temperature (up to 1000 C) and during a long period (24 h to several months).
Thermal energy storage in fluidized bed using ...
Fluidized bed is an important unit operation used in many chemical processes, which allows intensified mass and heat transfer due to excellent phase contact and efficient mixing (Mahmoudi et al., 2012). ... The integration of a fluidized bed energy storage unit containing granulated phase-change materials (PCMs) with an average …
Development of a Continuous Fluidized Bed Reactor for Thermochemical Energy Storage Application | J. Energy …
However, fluidized bed reactors offer significant advantages for scale-up of the system: the improved heat and mass transfer allows for higher charging/discharging power, whereas the favorable, continuous operation mode enables a decoupling of storage power and capacity.
Ca(OH)2/CaO reversible reaction in a fluidized bed reactor for ...
Semantic Scholar extracted view of "Ca(OH)2/CaO reversible reaction in a fluidized bed reactor for thermochemical heat storage" by P. Pardo et al. ... Novel thermochemical energy storage systems that employ fluidized beds of CaO/Ca ... Design of a MW-scale thermo-chemical energy storage reactor. Michael Angerer Moritz F. P. Becker +4 …
Ca(OH)2/CaO reversible reaction in a fluidized bed reactor for ...
Thermal energy storage (TES) is a key factor for increasing the efficiency of concentrated solar power plants. TES using a reversible chemical reaction appears to be a promising technology for high energy density thermal storage (100–500 kW h m −3), at high temperature (up to 1000 °C) and during a long period (24 h to several months). This …
Experimental and numerical studies of Ca(OH)2/CaO
[31] reported that a fluidized bed was more suitable as a reactor than a fixed-bed reactor with low thermal conductivity. Pardo et al. [32] ... Design of a MW-scale thermo-chemical energy storage reactor. Energy Rep. (2018) P. Pardo et al. A review on high temperature thermochemical heat energy storage. Renew. Sustain. Energy Rev. …
Application of an Internally Circulating Fluidized Bed for …
Solar thermochemical processes require the development of a high-temperature solar reactor operating at 1000 – 1500 ° C , such as solar gasification of coal and the thermal reduction of metal oxides as part of a two-step water splitting cycle.Here, we propose to apply "an internally circulating fluidized bed" for a windowed solar chemical …
Directly irradiated fluidized bed reactor for thermochemical …
Since most TCES processes involve gas/solid chemical reactions, multiphase chemical reactors own a key role for the success of the TCES technology. In this study, a novel batch lab-scale fluidized bed reactor for TCES of concentrated solar power and solar
Evaluation of the solar thermal storage of fluidized bed materials for hybrid solar thermo-chemical …
The use of solid particles as a solar energy transport and storage medium overcomes the intermittency issues for solar energy and is advantageous for the development of a hybrid process that integrates biomass and solar thermal energy. In this study, lab-scale experimental equipment consisted of a bubbling fluidized bed (55 mm …
Thermochemical Energy Storage Employing Fluidized Bed …
Preliminary experimental work at TUM on a lab scale fluidized bed reactor has been carried out to gain first insights into the topic of chemical cycle stability of storage materials. In addition, the fluidization behavior of the bulk material has been investigated in a fluidized bed cold model, containing a heat flux probe and operating at ...
Conceptual process design of a CaO/Ca(OH) 2 thermochemical energy storage system using fluidized bed …
This paper analyses a thermochemical energy storage process using a CaO/Ca(OH) 2 chemical loop. A single circulating fluidized bed reactor is proposed to carry out the hydration-dehydration alternating reactions. During the energy discharge step, steam is fed to ...
A novel fluidized bed "thermochemical battery" for energy storage …
Fluidized bed reactors are very attractive thanks to high values of heat transfer coefficients and thermal diffusivities [45]. ... Calcium looping as chemical energy storage in concentrated solar power plants: Carbonator modelling and configuration assessment. Appl Therm Eng, 172 (2020), p.
In-situ fabrication of Si/FeSi
The fluidized-bed reactor is made of quartz and has a. Results and discussions. In the fluidized bed reactor, C 2 H 2 cracks to be amorphous carbon and deposits on the surface of Si/FeSi 2 NPs to form Si/FeSi 2 @C NPs at high temperature as shown in Fig. 1. The thickness of the carbon layer gradually increases with the …
Design of reactive particle fluidized bed heat exchangers for gas–solid thermochemical energy storage …
To our knowledge, none of the previous authors designed a fluidized bed heat exchanger with a chemical reaction for releasing the stored thermochemical energy in sCO 2 –CSP systems. A detailed model of counter-flow shell and tube fluidized bed reactive heat exchangers was proposed.
Heat transfer in counterflow fluidized bed of oxide particles for ...
The operability of a solar-driven chemical process has been proved by calcining a batch of magnesium carbonate (MgCO 3) particles, added to the inventory. ... Energy storage with PCM in fluidized beds: Modeling and experiments. Chemical Engineering Journal, Volume 264, 2015, pp. 497-505.
Ca(OH)2/CaO reversible reaction in a fluidized bed reactor for thermochemical heat storage …
Thermal energy storage (TES) is a key factor for increasing the efficiency of concentrated solar power plants. TES using a reversible chemical reaction appears to be a promising technology for high energy density thermal storage (100–500 kW h m −3), at high temperature (up to 1000 C) and during a long period (24 h to several months).
Directly irradiated fluidized bed reactor for thermochemical …
A novel batch lab-scale fluidized bed reactor for thermochemical energy storage of concentrated solar power and solar fuels production was designed. The reactor targets at maximizing the collection of solar energy, withstanding the highly-concentrated flux typical of high-temperature concentrating solar thermal applications and ...
Development of a Concentrating Solar Power System Using Fluidized-bed ...
Figure 1. Schematic of a fluidized-bed CSP system with a near-blackbody enclosed particle receiver integrated with a fluidized-bed heat exchanger and solid-particle thermal energy storage. (Illustrations by Alfred Hicks, NREL) Figure 1 shows the FB-CSP thermal system integrated into a power tower solar field.
Design of Reactive Particle Fluidized Bed Heat Exchangers for Gas‒Solid Thermochemical Energy Storage …
We investigate the mechanisms by which chemical particles release energy in a fluidized bed (FB) heat exchanger to evaluate the performance of thermochemical storage materials. A 1-MWt thermal duty fluidized bed heat exchanger with sCO2 as the working fluid operating at 988 K is designed in different configurations, …
A comprehensive review of fluidized bed drying ...
Mehran et al. [52] examined the feasibility of a solar-powered (solar water heater and PV) hybrid fluidized bed-infrared dryer (SFBIRD) and assessed the comparative performance with a natural gas-based energy source (NGD) (as shown in Fig. 7). A silica-based solid desiccant wheel was embedded with the developed system to dehumidify the …
Effect of particle size distribution on heat transfer in bubbling ...
The aim of the present work is to characterize the effect of particle size changes from cycling of the thermochemical energy storage material CaO/Ca(OH) 2 on fluidizability and wall-to-bed heat transfer coefficients in the fluidized bed. Materials replicated from previous storage cyclization experiments are experimentally investigated …
Conceptual process design of a CaO/Ca(OH)2 thermochemical energy …
This paper analyses a thermochemical energy storage process using a CaO/Ca(OH) 2 chemical loop. A single circulating fluidized bed reactor is proposed to carry out the hydration-dehydration alternating reactions. During the energy discharge step, steam is fed to the reactor and used as a fluidizing gas and as a reactant with the CaO …
100 years of scaling up fluidized bed and circulating fluidized bed ...
Circulating Fluidized Bed: Energy: Chemical Looping (Coal Feeds) Moving Bed: Energy: OSU/B&W Pending: Coal Gasification (Winkler) Fluidized Bed: ... the concentrated CO 2 effluent stream is well-suited for subsequent sequestration and storage. Another advantage is that chemical looping with a suitable carrier can provide greater …
Directly irradiated fluidized bed reactor for thermochemical energy ...
Design of a MW-scale thermo-chemical energy storage reactor. Energy Rep. (2018) K.G. Sakellariou et al. ... In this paper, the mechanisms by which chemically reactive particles release energy in a fluidized bed (FB) heat exchanger has been investigated to evaluate the performance of thermochemical storage systems.
Improving the thermal performance of fluidized beds for …
Successful application of fluidized beds in thermal processing is fostering their application to novel and relatively unexplored fields, like collection and storage of solar radiation in CSP and thermal energy storage. There are some prerequisites that fluidized beds must fulfill for effective application to CSP, like: 1.
Improving the thermal performance of fluidized beds for concentrated solar power and thermal energy storage …
Fig. 1, Fig. 2 provide the mechanistic background for the assessment of the potential of uneven fluidization, possibly enhanced by the use of bed internals, for improved thermal performance. Fig. 1 is a qualitative outline which compares the gross solids flow patterns that are likely to establish in the case of even (Fig. 1 A) and uneven (Fig. 1 B) …
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