Thermal analysis of fluidized particle flows in a finned tube solar receiver

Gal, Alex Le; Grange, Benjamin; Tessonneaud, Michael; Pérez, Arnoldo; Escape, Christophe; Sans, Jean-Louis; Flamant, Gilles

doi:10.1016/j.solener.2019.08.062

Cited by 27 publications

(19 citation statements)

References 25 publications

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“…The fluidized particle-in-tube concept has been extensively proven, both by on-sun heating of the fluidized particles (Flamant et al, 2013;Benoit et al, 2015;Perez Lopez et al, 2016;Le Gal et al, 2019) and by characterization of the heat transfer mechanisms and hydrodynamics in the riser (Boissiere et al, 2015;Reyes Urrutia et al, 2016;Ansart et al, 2017;García-Triñanes et al, 2018). Operation up to 750°C, a temperature level much higher than that used in the molten salts solar plant, has been demonstrated.…”

Section: The Compartmented Fluidized Bed Solar Receivermentioning

confidence: 99%

“…Operation up to 750°C, a temperature level much higher than that used in the molten salts solar plant, has been demonstrated. Bed-to-wall heat transfer coefficient in the order of 500-700 W m −2 K −1 with ordinary tubes (Zhang et al, 2016b) and 1,200 W m −2 K −1 with finned tubes (Le Gal et al, 2019) have been reported. The role played by the multistage FB heat exchanger has also been highlighted (Gomez-Garcia et al, 2017).…”

Section: The Compartmented Fluidized Bed Solar Receivermentioning

confidence: 99%

“…However, early operation of pilot and demonstration installations is documented. Figure 9 reports the beam-down 150 kW th indirectly irradiated (Chirone et al, 2013) and 2 MW th directly irradiated (Magaldi, 2020) stationary compartmented dense FB (Type D), the beam-down window-type 100 kW th internally circulating FB at Miyazaki (Type F) and a new installation based on the fluidized particle-in-tube concept (Type E) and on the revamping of the Themis Tower (Ferriere et al, 2019;Le Gal et al, 2019) to demonstrate the technology in a relevant environment (TRL 6) with a satisfying thermal throughput (4 MW th ).…”

Section: Present and Perspective Applications Of Fluidized Bed Solar Receivers And Reactors Solar Energy Collection With Thermal Energy Smentioning

confidence: 99%

See 2 more Smart Citations

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

et al. 2021

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Thermal and thermochemical processes can be efficiently developed and carried out in fluidized beds, due to the unique properties of fluidized suspensions of solid particles and to the inherent flexibility of fluidized bed design and operation. Coupling fluidization with concentrated solar power is a stimulating cross-disciplinary field of investigation, with the related issues and opportunities to explore. In this review article the current and perspective applications of fluidized beds to collection, storage and exploitation of solar radiation are surveyed. Novel and “creative” designs of fluidized bed solar receivers/reactors are reported and critically discussed. The vast field of applications of solar-driven fluidized bed processes, from energy conversion with thermal energy storage, to solids looping for thermochemical energy storage, production of fuels, chemicals and materials, is explored with an eye at past and current developments and an outlook of future perspectives.

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Section: The Compartmented Fluidized Bed Solar Receivermentioning

confidence: 99%

Section: The Compartmented Fluidized Bed Solar Receivermentioning

confidence: 99%

Section: Present and Perspective Applications Of Fluidized Bed Solar Receivers And Reactors Solar Energy Collection With Thermal Energy Smentioning

confidence: 99%

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Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

et al. 2021

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“…A pilot scale demo-unit is currently under construction within the framework of Next-CSP European projects [25]. The main advantages of the latter concept are the use of a tubular receiver similar to the standard receiver of solar power tower and small diameter particles that exhibit high wall-to-fluidized bed heat transfer coefficient [26]. The main drawback is using an indirect heating configuration of the HTF that results in strong constraints on the absorber wall temperature and in the choice of a cavity receiver concept to reduce the radiative losses.…”

Section: Contextmentioning

confidence: 99%

“…The control of incident solar flux distribution on the tube wall is mandatory to avoid hot spots; aiming strategy is proposed in [31]. Thermo-mechanical behavior of the tubes submitted to high thermal gradient between the irradiated front side and the back side as reported in [26] is one of the most critical issue at high temperature. This challenge can be addressed by increasing the particle mixing (see above cited "turbulent fluidization regime [33]") and the heat transfer coefficient.…”

Section: Introductionmentioning

confidence: 99%

Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers

et al. 2020

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High temperature solar receivers are developed in the context of the Gen3 solar thermal power plants, in order to power high efficiency heat-to-electricity cycles. Since particle technology collects and stores high temperature solar heat, CNRS (French National Center for Scientific Research) develops an original technology using fluidized particles as HTF (heat transfer fluid). The targeted particle temperature is around 750 °C, and the walls of the receiver tubes, reach high working temperatures, which impose the design of a cavity receiver to limit the radiative losses. Therefore, the objective of this work is to explore the cavity shape effect on the absorber performances. Geometrical parameters are defined to parametrize the design. The size and shape of the cavity, the aperture-to-absorber distance and its tilt angle. A thermal model of a 50 MW hemi-cylindrical tubular receiver, closed by refractory panels, is developed, which accounts for radiation and convection losses. Parameter ranges that reach a thermal efficiency of at least 85% are explored. This sensitivity analysis allows the definition of cavity shape and dimensions to reach the targeted efficiency. For an aperture-to-absorber distance of 9 m, the 85% efficiency is obtained for aperture areas equal or less than 20 m2 and 25 m2 for high, and low convection losses, respectively.

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Solid particle solar receivers in the next‐generation concentrated solar power plant

Nie

Bai

Wang

et al. 2022

EcoMat

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Solid particles are generally considered to be the most suitable heat transfer fluid (HTF) and thermal energy storage (TES) materials for the next‐generation concentrated solar power (CSP) plant. The operating temperature of the solar receiver can be raised to exceed 800°C by the application of appropriate solid particles. In this way, power conversion efficiencies greater than 50% can be achieved with the supercritical carbon dioxide (sCO2) Brayton cycle. Solid particle solar receiver (SPSR) is the key equipment to absorb the concentrated solar flux, and its thermal performance is remarkably affected by receiver system designs, particle flow characteristics, and properties of solid particulate materials. This paper provides an in‐depth review of various SPSR technologies, as well as pertinent solid particle selections, optimization of the receiver system structures, particle flow characteristics, and heat transfer characteristics. The technical drawbacks, the large‐scale development prospects, and the potential optimization strategies of the various SPSR designs are highlighted by the comparative analysis of multiple parameters.

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Thermal analysis of fluidized particle flows in a finned tube solar receiver

Cited by 27 publications

References 25 publications

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

Fluidized Beds for Concentrated Solar Thermal Technologies—A Review

Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers

Solid particle solar receivers in the next‐generation concentrated solar power plant

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