Experimental investigation of cycling behaviour of pilot-scale thermal oil packed-bed thermal storage system

Bruch, Arnaud; Molina, Sophie; Esence, Thibaut; Fourmigué, Jean-François; Couturier, Raphaël

doi:10.1016/j.renene.2016.11.029

Cited by 76 publications

(19 citation statements)

References 23 publications

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“…Where ρf and ρs are density of fluid and solid phase and Cpf and Cps are specific heat of fluid and solid phase, respectively. usup is superficial fluid velocity inside the packed bed, calculated based on porosity in Equation 6 [13]:…”

Section: Numerical Analysismentioning

confidence: 99%

Packed-bed sensible thermal energy storage system using demolition wastes for concentrated solar power plants

Koçak

Paksoy

2019

E3S Web Conf.

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This paper presents a study on development of a packed-bed storage system for CSP applications. In this system, demolition wastes from urban regeneration projects in Turkey has been investigated as potential STESM for cost effective storage systems. Schumann’s two-phase one-dimensional model was used to evaluate the optimal design parameters. Effect of operational and geometrical design parameters such as mass velocity, porosity, aspect ratio of packed bed, packing diameter were assessed on storage performance. The system showed the best performance with low bed void fraction, low mass flow rate and low Rep.

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Section: Numerical Analysismentioning

confidence: 99%

Packed-bed sensible thermal energy storage system using demolition wastes for concentrated solar power plants

Koçak

Paksoy

2019

E3S Web Conf.

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“…x is the axial coordinate of packed-bed. usup is superficial fluid velocity inside the packed bed, calculated as follows [13]:…”

Section: A Schumann Modelmentioning

confidence: 99%

Numerical Model of Lab-Scale Packed-Bed Thermal Energy Storage System

Koçak¹,

Paksoy²

2019

Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)

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This paper presents numerical modeling of labscale packed bed thermal energy storage (TES) system. In the packed-bed with 0.30 m diameter and 0.90 m height, monotype storage particles developed from demolition wastes are used. Synthetic thermal oil is be used as fluid phase between 80 -180°C. Schumann and one-dimensional continuous phase models are compared. To perform the two different numerical models, it was assumed that the length of packed bed was divided into 90 equal layers. Both numerical models showed smooth temperature profiles. Comparison of numerical results with experimental data will be studied in the future work.

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“…This cylindrical domain is the only numerically computed part of the device. Detailed experimental set-up and physical properties are presented in [12]. The ends of the cylinder are closed by convex ends filled with free volumes of fluid and used for injection and collection of the fluid.…”

Section: Description Of the Experimental Devicementioning

confidence: 99%

“…The ends of the cylinder are closed by convex ends filled with free volumes of fluid and used for injection and collection of the fluid. The top end is connected to three inlet devices: one large lateral tube and two small ones (one axial, one lateral) that where added after the publication of [12]; the bottom end is only connected to a large lateral tube. These inlet/outlet tubes can be selected to produce different fluid distribution cases.…”

Section: Description Of the Experimental Devicementioning

confidence: 99%

Numerical Study of Influence of Fluid Distribution over Heat Storage into Porous Media

Bellenot¹,

Bentivoglio²,

Marty³

2019

Proceedings of the 5th World Congress on Mechanical, Chemical, and Material Engineering

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This paper presents the first results of an original physical model developed for dual media thermocline heat storage to investigate the influence of fluid distribution over performance. The technology, named "dual-media thermocline heat storage" or "liquidsolid regenerator heat storage" is based on a thermal oil flowing through a double particle-size porous media. The particular dual-media used in a French Alternative Energies and Atomic Energy Commission (CEA) experimental device is considered in this study, composed of sand (3mm diameter) and gravel (30mm diameter). The physical model solves usual mass, momentum and heat equations (Navier-Stokes) considering multi-dimensional behaviour to take into account flow distribution influence and considering separate thermal behaviour for the fluid phase, the gravel phase and the sand phase. The originality of the model consist in the separation of gravel and sand for the thermal behaviour of the porous media. The first part of the paper is a validation step against experimental data obtained in the CEA experimental device (3m high storage, 1m diameter) that has been specifically modified to study fluid distribution by adding inlet devices to force a non-ideal flow profile,. Then the second part of the paper is dedicated to the numerical study of charges for a 2Daxisymetric cylindrical volumes representing the storage. In one case, a uniform distribution all over one end is done, on the other case a uniform distribution on an axial reduced surface of this end.

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Experimental investigation of cycling behaviour of pilot-scale thermal oil packed-bed thermal storage system

Cited by 76 publications

References 23 publications

Packed-bed sensible thermal energy storage system using demolition wastes for concentrated solar power plants

Packed-bed sensible thermal energy storage system using demolition wastes for concentrated solar power plants

Numerical Model of Lab-Scale Packed-Bed Thermal Energy Storage System

Numerical Study of Influence of Fluid Distribution over Heat Storage into Porous Media

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