Dynamic simulations of a honeycomb ceramic thermal energy storage in a solar thermal power plant using air as the heat transfer fluid

Li, Qing; Bai, Fengwu; Yang, Bei; Wang, Yan; Xu, Long; Chang, Zheshao; Wang, Zhifeng; Hefni, Baligh El; Yang, Zijiang; Kubo, Shuichi; Kiriki, Hiroaki; Han, Mingxu

doi:10.1016/j.applthermaleng.2017.10.063

Cited by 32 publications

(4 citation statements)

References 24 publications

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“…This behaviour is correctly simulated thanks to two-dimensional three-phase CFD simulations taking account of the thermal dispersion and the variation of the void fraction over the bed cross section. Li et al, 2018, studied two packed beds made of ceramic honeycombs and running up to 550°C. One has a square channel shape, while the second has a regular hexagon channel shape.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and numerical modelling of high temperature gas/solid packed-bed heat storage systems

Esence

Desrues

Fourmigué

et al. 2019

Energy

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Two pilot-scale regenerative heat storage systems have been tested by the French Alternative Energies and Atomic Energy Commission (CEA). The first one is a 1.1-MWhth structured packed bed consisting of ceramic plates forming corrugated channels. The second one is a 1.4-MWhth granular packed bed consisting of basaltic rocks enclosed by refractory walls. The two regenerators were tested over a hundred of thermal cycles between 80°C and 800°C with different fluid mass flows. Both systems showed their ability to store heat efficiently and to provide thermal energy at a stable temperature for the most part of the discharge process. The granular packed bed exhibited large transverse thermal heterogeneities due to flow channelling in the corners of the cross section. However, this phenomenon appears not to have degraded significantly the thermal performances, and the average one-dimensional thermal behaviour of the system may be assessed thanks to the surface weighted average of the temperature over the bed cross section. Compared to the granular packed bed, the structured bed showed comparable thermal performances while inhibiting flow heterogeneities and reducing by up to 54% the average pressure drop. Furthermore, at the end of the test campaign, the packed beds were observed and compared from a mechanical point of view. The thermal results were successfully simulated over numerous charge/discharge cycles thanks to a onedimensional numerical model. This is significant since the discrepancies between experimental and numerical results are likely to accumulate from a cycle to the other. The model considers the packed beds as continuous and homogeneous porous media but takes account of the conduction resistances within the solid filler and the walls. The pressure drop of the beds was computed using a correlation developed thanks to a previous CFD study for the structured packed bed, and the Ergun equation for the granular packed bed. Compared to experimental data, these correlations enabled to estimate the order of magnitude and the evolution trend of the pressure drop with an average deviation ranging from-7.2% to +61.9%. For the granular packed bed, these deviations are ascribed to the flow heterogeneities and the shape of the rocks which are not taken into account in the Ergun equation.

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Section: Introductionmentioning

confidence: 99%

Experimental study and numerical modelling of high temperature gas/solid packed-bed heat storage systems

Esence

Desrues

Fourmigué

et al. 2019

Energy

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“…The use of various materials for both low-and high-grade TES systems can be found in the work of Gautam and Saini. 103 For medium-grade applications (temperatures between 100°C and 400°C), concrete bricks and bauxite are generally suggested thanks to their availability and affordability, 47,104 whereas for higher temperature storage (above 400°C), materials such as recycled ceramics, 105 honeycomb ceramic, 106 cast steel, 107 siliceous rocks, 108 basalt rocks, 109 basalt glasses, 110 sintered ore, 111 various concrete based materials [112][113][114] (including a mixture of concrete with phase change material 25 ), fine-grained materials (such as silica sand, quartz gravel, and basalt), 115 basalt fiber, 116 refractory blocks, 47 firebrick resistance material, 117 industrial wastes, 118 demolition waste based sensible heat materials (mainly composed of CaO, SiO 2 , and Fe 2 O 3 ), 119 and industrial by-product materials (from the potash industry) 120 are suggested. A recent study compared the energy recovery efficiency (the ratio of the heat released during discharging to the total energy consumption in a complete storage cycle) of various solid materials used in a packedbed TES, 121 and highlighted the suitability of sintered ore particles as the storage material at temperatures above 600°C.…”

Section: Use Of Different Storage Materials In Rtes Systemsmentioning

confidence: 99%

Progress on rock thermal energy storage (RTES): A state of the art review

Amiri

Ermagan

Kurnia

et al. 2023

Energy Science & Engineering

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Thermal energy is one of the most widely encountered energy forms in our daily life. To ensure efficient utilization and conversion of this energy, the balance between supply and demand needs to be maintained. For this purpose, thermal energy storage is required. There are various thermal energy storage systems available; one of the most basic is sensible thermal energy storage which includes rock thermal energy storage (RTES). This rock‐based energy storage has recently gained significant attention due to its capability to hold large amounts of thermal energy, relatively simple storage mechanism and low cost of storage medium. Accordingly, numerous studies have been conducted to elucidate the basic flow and heat transfer mechanism and to evaluate the performance of this energy storage. The major technical challenges hindering the wide adoption of this technology are the enormous pressure drop across the storage and nonoptimal heat transfer from the heat transfer fluid to the storage medium and vice versa. These issues will directly and indirectly affect the overall cost (capital, operational, and maintenance costs) of the system. To eliminate this issue and assist further development of this technology, it is crucial to compile and extract important findings from these previous studies, identify the challenge and research gap, and draw guidelines for the upcoming research and development. At the moment, this kind of compilation does not exist. Hence, this paper is prepared with the primary objective to comprehensively review the current technology and development of RTES and to propose a potential way forward based on the pain point identified. Discussion on the nontechnical aspect such as policy and regulations as well as community awareness will also be outlined and discussed.

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“…The convective heat transfer coefficient of gas in the intake channel, reaction channel and exhaust channel can be calculated by the Equations ( 8) and ( 9) [19].…”

Section: Conflicts Of Interestmentioning

confidence: 99%

Design and Performance Investigation of a Compact Catalytic Reactor Integrated with Heat Recuperator

et al. 2022

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The catalytic combustion has the advantage of lower auto-ignition temperature and helps to expand the combustible limit of lean premixed gas. However, the intake needs to be preheated to certain temperature commonly through an independent heat exchanger. Similar to the principles of non-catalytic RTO combustion, this paper presents a similar approach whereby the combustion chamber is replaced by a catalytic combustion bed. A new catalytic reactor integrated with a heat recuperator is designed to enhance the heat recirculation effect. Using a two-dimensional computational fluid dynamics model, the performance of the reactor is studied. The reaction performances of the traditional and compact reactors are compared and analyzed. Under the same conditions, the compact reactor has better reaction performance and heat recirculation effect, which can effectively decrease the ignition temperature of feed gas. The influences of the inlet velocity, the inlet temperature, the methane concentration, and the thermal conductivity of porous media on the reaction performance of integrated catalytic reactor are studied. The results show that the inlet velocity, inlet temperature, methane concentration, and thermal conductivity of porous media materials have important effects on the reactor performance and heat recirculation effect, and the thermal conductivity of porous media materials has the most obvious influence. Moreover, the reaction performance of multiunit integrated catalytic reactor is studied. The results show that the regenerative effect of multiunit integrated catalytic reactor is further enhanced. This paper is of great significance to the recycling of low calorific value gas energy and relieving energy stress in the future.

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Dynamic simulations of a honeycomb ceramic thermal energy storage in a solar thermal power plant using air as the heat transfer fluid

Cited by 32 publications

References 24 publications

Experimental study and numerical modelling of high temperature gas/solid packed-bed heat storage systems

Experimental study and numerical modelling of high temperature gas/solid packed-bed heat storage systems

Progress on rock thermal energy storage (RTES): A state of the art review

Design and Performance Investigation of a Compact Catalytic Reactor Integrated with Heat Recuperator

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