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An aiming point strategy applied to a prototype-scale power tower is analyzed in this paper to define the operation conditions and to preserve the lifetime of the solar receiver developed in the framework of the Next-commercial solar power (CSP) H2020 project. This innovative solar receiver involves the fluidized particle-in-tube concept. The aiming solution is compared to the case without the aiming strategy. Due to the complex tubular geometry of the receiver, results of the Tabu search for the aiming point strategy are combined with a ray-tracing software, and these results are then coupled with a simplified thermal model of the receiver to evaluate its performance. Daily and hourly aiming strategies are compared, and different objective normalized flux distributions are applied to quantify their influence on the receiver wall temperature distribution, thermal efficiency and particle outlet temperature. A gradual increase in the solar incident power on the receiver is analyzed in order to keep a uniform outlet particle temperature during the start-up. Results show that a tradeoff must be respected between wall temperature and particle outlet temperature.
Benjamin Grange; Gilles Flamant. Aiming Strategy on a Prototype-Scale Solar Receiver: Coupling of Tabu Search, Ray-Tracing and Thermal Models. Sustainability 2021, 13, 3920 .
AMA StyleBenjamin Grange, Gilles Flamant. Aiming Strategy on a Prototype-Scale Solar Receiver: Coupling of Tabu Search, Ray-Tracing and Thermal Models. Sustainability. 2021; 13 (7):3920.
Chicago/Turabian StyleBenjamin Grange; Gilles Flamant. 2021. "Aiming Strategy on a Prototype-Scale Solar Receiver: Coupling of Tabu Search, Ray-Tracing and Thermal Models." Sustainability 13, no. 7: 3920.
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.
Ronny Gueguen; Benjamin Grange; Françoise Bataille; Samuel Mer; Gilles Flamant. Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers. Energies 2020, 13, 4803 .
AMA StyleRonny Gueguen, Benjamin Grange, Françoise Bataille, Samuel Mer, Gilles Flamant. Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers. Energies. 2020; 13 (18):4803.
Chicago/Turabian StyleRonny Gueguen; Benjamin Grange; Françoise Bataille; Samuel Mer; Gilles Flamant. 2020. "Shaping High Efficiency, High Temperature Cavity Tubular Solar Central Receivers." Energies 13, no. 18: 4803.
Calcination of limestone for lime production was successfully performed in the continuous flow mode on a daily basis in a fluidized bed indirectly heated by concentrated solar radiation. Industrial calcium carbonate feedstock was decomposed at the focus of the CNRS 1 MW solar furnace in a pilot-scale solar reactor operating at an average power of 55 kW. The reactor was a four-stage horizontal fluidized bed, irradiated on a front metallic wall of 1 m long and 0.4 m high. A novel aiming strategy was applied to reduce the hot spots on the irradiated wall. The conversion degree was analyzed as a function of the fluidization conditions (air mass flow rate) and the particle mass flow rate. This latter parameter varied in range (14.5 – 25 kg/h), and the highest conversion degrees were obtained at high fluidization velocity. The best result was obtained for a calcite mass flow rate of 20 kg/h, resulting in a degree of conversion of 95.2%, a BET surface area of the lime of 5.39 m2/g, and 17% and 29% thermochemical and thermal efficiencies of the reactor, respectively. This achievement corresponds to a particle mass flow rate three times higher than the current state of the art for solar calcination of lime.
Thibaut Esence; Emmanuel Guillot; Michael Tessonneaud; Jean-Louis Sans; Gilles Flamant. Solar calcination at pilot scale in a continuous flow multistage horizontal fluidized bed. Solar Energy 2020, 207, 367 -378.
AMA StyleThibaut Esence, Emmanuel Guillot, Michael Tessonneaud, Jean-Louis Sans, Gilles Flamant. Solar calcination at pilot scale in a continuous flow multistage horizontal fluidized bed. Solar Energy. 2020; 207 ():367-378.
Chicago/Turabian StyleThibaut Esence; Emmanuel Guillot; Michael Tessonneaud; Jean-Louis Sans; Gilles Flamant. 2020. "Solar calcination at pilot scale in a continuous flow multistage horizontal fluidized bed." Solar Energy 207, no. : 367-378.
The design and the performance of a medium-scale modular solar power plant (~20 MW) integrating a gas turbine combined cycle with a fluidized particle-in-tube receiver and direct thermal storage are investigated in this paper. A practical technique is used to design each part of the solar power plant. The complete design starts with the solar gas turbine (SGT) since it defines the necessary power to run it; then, the other parts are designed upstream. Three different cases are investigated under different operation strategies corresponding to two particle temperatures 750 °C and 880 °C, and hybrid and solar-only operation modes respectively. The results show that the nominal efficiency of the components including the heliostat field, the solar receiver, the gas turbine, and the steam turbine can reach 67%, 80%, 32%, and 34.5% respectively. As a result, the nominal thermal efficiency and the annual capacity factor of the complete solar power plant achieve 46% and 33.47% respectively. The overall nominal efficiency (solar-to-electric efficiency) of the plant for hybrid operation mode is 25.80%. It varies from 21.16% to 24.7% for the solar-only operation mode. Special interest is shown to the part-load operations.
Omar Behar; Benjamin Grange; Gilles Flamant. Design and performance of a modular combined cycle solar power plant using the fluidized particle solar receiver technology. Energy Conversion and Management 2020, 220, 113108 .
AMA StyleOmar Behar, Benjamin Grange, Gilles Flamant. Design and performance of a modular combined cycle solar power plant using the fluidized particle solar receiver technology. Energy Conversion and Management. 2020; 220 ():113108.
Chicago/Turabian StyleOmar Behar; Benjamin Grange; Gilles Flamant. 2020. "Design and performance of a modular combined cycle solar power plant using the fluidized particle solar receiver technology." Energy Conversion and Management 220, no. : 113108.
Solar pyrolysis of raw and heavy metals (HMs) impregnated willow was performed at different temperatures (600, 800, 1000, 1200, 1400 and 1600 °C) with heating rate of 50 °C/s. CHNS, ICP-OES, SEM-EDX and BET were employed to investigate the effects of temperature and HMs contamination on char properties. The results indicated that a more ordered and aromatic char was formed with increasing pyrolysis temperature. Char carbon contents increased from 70.0% to 88.4% while hydrogen and oxygen contents declined. Char BET surface area firstly increased from 5.3 to 161.0 m2/g with rising the temperature from 600 to 1000 °C, then decreased at higher temperatures due to plastic deformation. Pyrolysis caused alkali and alkaline-earth metals (A&AEMs) enrichment in char as temperature increased from 600 to 800 °C, then their content decreased at higher temperatures. The presence of Cu or Ni led to the decrease of hydrogen and oxygen contents and significant increase of Ni or Cu in char compared with those in raw willow char. Besides, Raman and BET analysis showed that contaminated willow char had a higher ratio of G band area to the integrated area (IG/IAll) and bigger BET surface area than raw material indicating a more organized and porous structure of the char.
Kuo Zeng; Rui Li; Doan Pham Minh; Elsa Weiss-Hortala; Ange Nzihou; Dian Zhong; Gilles Flamant. Characterization of char generated from solar pyrolysis of heavy metal contaminated biomass. Energy 2020, 206, 118128 .
AMA StyleKuo Zeng, Rui Li, Doan Pham Minh, Elsa Weiss-Hortala, Ange Nzihou, Dian Zhong, Gilles Flamant. Characterization of char generated from solar pyrolysis of heavy metal contaminated biomass. Energy. 2020; 206 ():118128.
Chicago/Turabian StyleKuo Zeng; Rui Li; Doan Pham Minh; Elsa Weiss-Hortala; Ange Nzihou; Dian Zhong; Gilles Flamant. 2020. "Characterization of char generated from solar pyrolysis of heavy metal contaminated biomass." Energy 206, no. : 118128.
A laboratory-scale solar reactor prototype dedicated to calcination processes of non-metallic mineral particles is tested and characterized. The prototype consists of an indirect heating shallow cross-flow fluidized-bed reactor-receiver. It is composed of 4 compartments in series in which the particles are thermally treated with solar power in order to drive the endothermic calcination reaction. The particles are fluidized in the reactor with preheated air and are heated up to 800 °C through the front wall of the reactor receiving the concentrated solar flux (about 200 kW/m2). The tests are carried out at the 1-MW Odeillo’s solar furnace (France). The thermal decomposition of a continuous stream of 9.4 kg/h of dolomite (CaMg(CO3)2) is investigated in this paper. The half decomposition of dolomite (CaMg(CO3)2 → CaCO3 + MgO + CO2) is performed with a degree of conversion of 100%. The complete decomposition of dolomite (CaMg(CO3)2 → CaO + MgO + 2CO2) is not reached because, with respect to the CO2 partial pressure in the reactor, the temperature of particles is not high enough to decompose the calcium carbonate. The calculated thermochemical efficiency (i.e. the energy absorbed by the endothermic calcination reaction compared to the solar energy provided to the system) is 6.6%. This low efficiency is neither surprising nor critical since the reactor design was not optimised with respect to energy efficiency but designed to the control of particle flow and front wall solar flux distribution. A numerical model considering the 4 compartments of the reactor as 4 ideal continuous stirred tank reactors in series is developed. The model accounts for the mass and the energy balances, as well as the reaction kinetics of the half decomposition of dolomite. The model gives consistent results compared to the experimental data. These results are a proof of concept of continuous calcination reaction using concentrated solar energy in a cross-flow fluidized-bed reactor.
Thibaut Esence; Hadrien Benoit; Damien Poncin; Michael Tessonneaud; Gilles Flamant. A shallow cross-flow fluidized-bed solar reactor for continuous calcination processes. Solar Energy 2019, 196, 389 -398.
AMA StyleThibaut Esence, Hadrien Benoit, Damien Poncin, Michael Tessonneaud, Gilles Flamant. A shallow cross-flow fluidized-bed solar reactor for continuous calcination processes. Solar Energy. 2019; 196 ():389-398.
Chicago/Turabian StyleThibaut Esence; Hadrien Benoit; Damien Poncin; Michael Tessonneaud; Gilles Flamant. 2019. "A shallow cross-flow fluidized-bed solar reactor for continuous calcination processes." Solar Energy 196, no. : 389-398.
Solar energy and biomass are the two major sources of renewable energy, which can be integrated to produce heat, power and transportation fuels, chemicals and biomaterials using pyrolysis. In this work, separate samples of chicken-litter waste and rice husk of different particle sizes (280 and 500 μm) were pyrolysed with a concentrated solar radiation to produce pyrolysis gases of high calorific value. Different operating parameters were investigated under the solar pyrolysis conditions. Heating rates from 10 to 500 °C/s and temperatures in the range of 800–1600 °C, generated from a lab-scale solar furnace with maximum power capacity of 1.5 kW, were applied. Temperature was found to have the highest effect, changing the gas yield from 10 to 39 wt%; decreasing the bio-oil and char yields from 48 to 41 wt % and 42 to 18 wt%, respectively as the temperature increased from 800 to 1600 °C. The highest specific energy content of the gas (7255 kJ/kg) was obtained with the 280 μm particle size chicken litter at 1600 °C. Overall, gases produced from solar assisted biomass pyrolysis have a high concentration of combustible products that could be directly used as fuels in engines or power plants.
Haftom Weldekidan; Vladimir Strezov; Rui Li; Tao Kan; Graham Town; Ravinder Kumar; Jing He; Gilles Flamant. Distribution of solar pyrolysis products and product gas composition produced from agricultural residues and animal wastes at different operating parameters. Renewable Energy 2019, 151, 1102 -1109.
AMA StyleHaftom Weldekidan, Vladimir Strezov, Rui Li, Tao Kan, Graham Town, Ravinder Kumar, Jing He, Gilles Flamant. Distribution of solar pyrolysis products and product gas composition produced from agricultural residues and animal wastes at different operating parameters. Renewable Energy. 2019; 151 ():1102-1109.
Chicago/Turabian StyleHaftom Weldekidan; Vladimir Strezov; Rui Li; Tao Kan; Graham Town; Ravinder Kumar; Jing He; Gilles Flamant. 2019. "Distribution of solar pyrolysis products and product gas composition produced from agricultural residues and animal wastes at different operating parameters." Renewable Energy 151, no. : 1102-1109.
This paper addresses experimental results on fluidized particle-in-tube solar receiver using a finned tube in order to increase wall-to-particle heat transfer. On-sun tests of a single finned tube solar receiver were performed at the focus of the 1 MW solar furnace of Odeillo. Several solar flux densities and distributions (mean values 236–485 kW/m2) and particle mass flux densities (G = 20–110 kg/m2·s) were tested. A detailed analysis of tube wall and particle temperature distributions and temperature measurement accuracy is proposed. The power extracted by the particle suspension ranges between 17.8 kW and 32 kW and the typical thermal efficiency of this lab-scale solar receiver is about 75%. The mean global wall-to-fluidized particle heat transfer coefficient is calculated as 1200 ± 400 W/m2·K for G in the range 30–110 kg/m2·s. The main uncertainty on the heat transfer coefficient is due to uncertainty on wall temperature measurement during on-sun experiments. The range of this uncertainty is estimated by comparing infra-red camera measurements and wall-welded thermocouple data.
A. Le Gal; B. Grange; M. Tessonneaud; A. Perez; C. Escape; J-L. Sans; G. Flamant. Thermal analysis of fluidized particle flows in a finned tube solar receiver. Solar Energy 2019, 191, 19 -33.
AMA StyleA. Le Gal, B. Grange, M. Tessonneaud, A. Perez, C. Escape, J-L. Sans, G. Flamant. Thermal analysis of fluidized particle flows in a finned tube solar receiver. Solar Energy. 2019; 191 ():19-33.
Chicago/Turabian StyleA. Le Gal; B. Grange; M. Tessonneaud; A. Perez; C. Escape; J-L. Sans; G. Flamant. 2019. "Thermal analysis of fluidized particle flows in a finned tube solar receiver." Solar Energy 191, no. : 19-33.
The study presented an innovative way to dispose and upgrade heavy metal (HM) contaminated biomass by solar pyrolysis. Pyrolysis of raw and HM (Cu and Ni) impregnated willow wood was performed in a solar reactor under different temperatures (600, 800, 1000, 1200, 1400 and 1600°C) and heating rates (10 and 50°C/s). The combined effects of HM and heating parameters (temperature and heating rates) on solar pyrolysis products were investigated. The results indicated that a threshold temperature of 1000°C was required in impregnated willow pyrolysis to make sure copper and nickel catalytic effects on promoting the cracking and reforming reactions of tar. It led to the gas yields from copper or nickel impregnated willow pyrolysis at 1200°C increased by 14.76% and 34.47%, respectively, compared with that from raw willow. In particular, the H2 and CO production from nickel impregnated willow were higher than those from raw willow (10.30 and 12.16 mol/kg of wood versus 6.59 and 8.20 mol/kg of wood) in case of fast pyrolysis (50°C/s). Under heating rate of 10°C/s, H2 and CO yields from only nickel impregnated willow increased compared with that from raw willow. Solar pyrolysis of HM contaminated biomass is a promising way to produce valuable syngas.
Kuo Zeng; Rui Li; Doan Pham Minh; Elsa Weiss-Hortala; Ange Nzihou; Xiao He; Gilles Flamant. Solar pyrolysis of heavy metal contaminated biomass for gas fuel production. Energy 2019, 187, 116016 .
AMA StyleKuo Zeng, Rui Li, Doan Pham Minh, Elsa Weiss-Hortala, Ange Nzihou, Xiao He, Gilles Flamant. Solar pyrolysis of heavy metal contaminated biomass for gas fuel production. Energy. 2019; 187 ():116016.
Chicago/Turabian StyleKuo Zeng; Rui Li; Doan Pham Minh; Elsa Weiss-Hortala; Ange Nzihou; Xiao He; Gilles Flamant. 2019. "Solar pyrolysis of heavy metal contaminated biomass for gas fuel production." Energy 187, no. : 116016.
The main objective of the SOLPART H2020 project is to develop, at a pilot scale (30-50 kW), a high temperature (800-1000°C) 24h/day solar process suitable for particle treatment in energy intensive non-metallic minerals’ industries. Calcium carbonate decomposition (Calcination reaction: CaCO3= CaO + CO2) is the most representative and most endothermal reaction in this type of application of solar process heat for industry. This paper presents the context, the particle to be treated, the reaction thermodynamics and kinetics, the mass and energy balances and the solar reactor technology currently under development.
Gilles Flamant; Hadrien Benoit; Martin Jenke; Ana Filipa Santos; Stefania Tescari; Gkiokchan Moumin; Alfonso Rodriguez; Adisa Azapagic; Laurence Stamford; Jan Baeyens; Yannick Boes; Frédéric Pron; Marie Prouteau; Philippe Dumont; Naji Abdenouri; Hamid Mazouz. Solar processing of reactive particles up to 900°C, the SOLPART project. AIP Conference Proceedings 2018, 2033, 020004 .
AMA StyleGilles Flamant, Hadrien Benoit, Martin Jenke, Ana Filipa Santos, Stefania Tescari, Gkiokchan Moumin, Alfonso Rodriguez, Adisa Azapagic, Laurence Stamford, Jan Baeyens, Yannick Boes, Frédéric Pron, Marie Prouteau, Philippe Dumont, Naji Abdenouri, Hamid Mazouz. Solar processing of reactive particles up to 900°C, the SOLPART project. AIP Conference Proceedings. 2018; 2033 (1):020004.
Chicago/Turabian StyleGilles Flamant; Hadrien Benoit; Martin Jenke; Ana Filipa Santos; Stefania Tescari; Gkiokchan Moumin; Alfonso Rodriguez; Adisa Azapagic; Laurence Stamford; Jan Baeyens; Yannick Boes; Frédéric Pron; Marie Prouteau; Philippe Dumont; Naji Abdenouri; Hamid Mazouz. 2018. "Solar processing of reactive particles up to 900°C, the SOLPART project." AIP Conference Proceedings 2033, no. 1: 020004.
Solid particles can be used as a heat transfer medium in concentrated solar power plants to operate at higher temperature and achieve higher heat conversion efficiency than using the current solar Heat Transfer Fluids (HTF) that only work below 600 °C. Among various particle circulation concepts, the Dense Particle Suspension (DPS) flow in tubes, also called Upflow Bubbling Fluidized Bed (UBFB), was studied in the frame of the CSP2 FP7 European project. The DPS capacity to extract heat from a tube absorber exposed to concentrated solar radiation was demonstrated and the first values of the tube wall‐to‐DPS heat transfer coefficient were measured. A stable outlet temperature of 750 °C was reached with a metallic tube, and a particle reflux in the near tube wall region was evidenced. In this paper, the UBFB behavior is studied using the multiphase flow code NEPTUNE CFD. This article is protected by copyright. All rights reserved.
Hadrien Benoit; Renaud Ansart; Hervé Neau; Pablo Garcia Triñanes; Gilles Flamant; Olivier Simonin. Three-dimensional numerical simulation of upflow bubbling fluidized bed in opaque tube under high flux solar heating. AIChE Journal 2018, 64, 3857 -3867.
AMA StyleHadrien Benoit, Renaud Ansart, Hervé Neau, Pablo Garcia Triñanes, Gilles Flamant, Olivier Simonin. Three-dimensional numerical simulation of upflow bubbling fluidized bed in opaque tube under high flux solar heating. AIChE Journal. 2018; 64 (11):3857-3867.
Chicago/Turabian StyleHadrien Benoit; Renaud Ansart; Hervé Neau; Pablo Garcia Triñanes; Gilles Flamant; Olivier Simonin. 2018. "Three-dimensional numerical simulation of upflow bubbling fluidized bed in opaque tube under high flux solar heating." AIChE Journal 64, no. 11: 3857-3867.
Hybrid solar photovoltaic (PV)/thermal power systems offer the possibility of dispatchable, affordable and efficient solar electricity production – the type of transformative innovation needed for solar cell devices to realize high grid penetration.
Alexis Vossier; Joya Zeitouny; Eugene Katz; Alain Dollet; Gilles Flamant; Jeffrey Gordon. Performance bounds and perspective for hybrid solar photovoltaic/thermal electricity-generation strategies. Sustainable Energy & Fuels 2018, 2, 2060 -2067.
AMA StyleAlexis Vossier, Joya Zeitouny, Eugene Katz, Alain Dollet, Gilles Flamant, Jeffrey Gordon. Performance bounds and perspective for hybrid solar photovoltaic/thermal electricity-generation strategies. Sustainable Energy & Fuels. 2018; 2 (9):2060-2067.
Chicago/Turabian StyleAlexis Vossier; Joya Zeitouny; Eugene Katz; Alain Dollet; Gilles Flamant; Jeffrey Gordon. 2018. "Performance bounds and perspective for hybrid solar photovoltaic/thermal electricity-generation strategies." Sustainable Energy & Fuels 2, no. 9: 2060-2067.
Solar thermal pyrolysis of natural gas is studied for the co-production of hydrogen, a promising energy carrier, and Carbon Black, a high-value nano-material, with the bonus of zero CO2 emissions. A 10 kW multi-tubular solar reactor (SR10) based on the indirect heating concept was designed, constructed and tested. It is composed of an insulated cubic cavity receiver (20 cm side) that absorbs concentrated solar irradiation through a quartz window by a 9 cm-diameter aperture. The solar concentrating system is the 1 MW solar furnace of CNRS-PROMES laboratory. An argon-methane mixture flows inside four graphite tubular reaction zones each composed of two concentric tubes that are settled vertically inside the cavity. Experimental runs mainly showed the key influence of the residence time and temperature on the reaction extent. Since SR10 design presented a weak recovery of carbon black in the filter, a single tube configuration was tested with an external plasma heating source. Complete methane conversion and hydrogen yield beyond 80% were achieved at 2073K. Hydrogen and carbon mass balances showed that C2H2 intermediates affect drastically the carbon black production yield: about half of the initial carbon content in the CH4 was found as C2H2 in the outlet gas. Nevertheless, the carbon black recovery in the filtering device was improved with this new configuration. Data are extrapolated to predict the possible hydrogen and carbon production for a future 50 kW solar reactor. The expected production was estimated to be about 2.47 Nm3/h H2 and 386 g/h carbon black for 1.47 Nm3/h of CH4 injected.
Sylvain Rodat; Stéphane Abanades; Gilles Flamant. Experimental Evaluation of Indirect Heating Tubular Reactors for Solar Methane PyrolysisThis study was funded by the European Project “Solhycarb” (FP6, Contract SES-CT2006-19770). The authors wish to thank J.Y Peroy and J.M. Bienfait for their contribution during the experimental campaign with the plasma reactor, and J.L. Sans, M. Garrabos and O. Prévost for their technical support on SR10. ENERGYO 2018, 1 .
AMA StyleSylvain Rodat, Stéphane Abanades, Gilles Flamant. Experimental Evaluation of Indirect Heating Tubular Reactors for Solar Methane PyrolysisThis study was funded by the European Project “Solhycarb” (FP6, Contract SES-CT2006-19770). The authors wish to thank J.Y Peroy and J.M. Bienfait for their contribution during the experimental campaign with the plasma reactor, and J.L. Sans, M. Garrabos and O. Prévost for their technical support on SR10. ENERGYO. 2018; ():1.
Chicago/Turabian StyleSylvain Rodat; Stéphane Abanades; Gilles Flamant. 2018. "Experimental Evaluation of Indirect Heating Tubular Reactors for Solar Methane PyrolysisThis study was funded by the European Project “Solhycarb” (FP6, Contract SES-CT2006-19770). The authors wish to thank J.Y Peroy and J.M. Bienfait for their contribution during the experimental campaign with the plasma reactor, and J.L. Sans, M. Garrabos and O. Prévost for their technical support on SR10." ENERGYO , no. : 1.
Jack Hoeniges; Inma Pérez-López; Hadrien Benoit; Daniel Gauthier; Gilles Flamant. Fluidized particle-in-tube solar receiver and reactor: A versatile concept for particulate calcination and high efficiency thermodynamic cycles. 2018, 1 .
AMA StyleJack Hoeniges, Inma Pérez-López, Hadrien Benoit, Daniel Gauthier, Gilles Flamant. Fluidized particle-in-tube solar receiver and reactor: A versatile concept for particulate calcination and high efficiency thermodynamic cycles. . 2018; ():1.
Chicago/Turabian StyleJack Hoeniges; Inma Pérez-López; Hadrien Benoit; Daniel Gauthier; Gilles Flamant. 2018. "Fluidized particle-in-tube solar receiver and reactor: A versatile concept for particulate calcination and high efficiency thermodynamic cycles." , no. : 1.
Solar pyrolysis of a carbonaceous feedstock (coal, biomass and wastes) is a process in which carbon-containing feedstocks are used as chemical reactants and solar energy is supplied as high-temperature process heat. This process has the potential to produce higher calorific value products with lower CO2 emissions than conventional pyrolysis processes. As a consequence, the intermittent solar energy is chemically stored in the form of solar fuels. Solar pyrolysis was first demonstrated in an indoor environment using a solar simulator (image furnace) for exploring the fundamental mechanisms of carbonaceous feedstock pyrolysis under severe radiative conditions (high temperatures and heating rates) in comparison to conventional pyrolysis. More recently, low-temperature solar pyrolysis has been demonstrated to be a good technology for bio-oil production. Our high-temperature solar pyrolysis process produces more combustible gas products than other processes. This paper reviews developments in the field of solar pyrolysis processing by considering fundamental mechanisms, experimental demonstrations, models and challenges.
Kuo Zeng; Daniel Gauthier; José Miguel Soria; Germán Mazza; Gilles Flamant. Solar pyrolysis of carbonaceous feedstocks: A review. Solar Energy 2017, 156, 73 -92.
AMA StyleKuo Zeng, Daniel Gauthier, José Miguel Soria, Germán Mazza, Gilles Flamant. Solar pyrolysis of carbonaceous feedstocks: A review. Solar Energy. 2017; 156 ():73-92.
Chicago/Turabian StyleKuo Zeng; Daniel Gauthier; José Miguel Soria; Germán Mazza; Gilles Flamant. 2017. "Solar pyrolysis of carbonaceous feedstocks: A review." Solar Energy 156, no. : 73-92.
Le solaire à concentration consiste à accroître la densité de flux d’énergie (en W/m2) reçue par une surface par rapport au rayonnement solaire incident grâce à des miroirs (concentration par réflexion) ou des lentilles (concentration par réfraction). Ainsi le facteur de concentration géométrique est le rapport de la surface de captation sur la surface de réception (en admettant que cette dernière est égale à la surface de la zone focale, c’est-à-dire de la zone située entre le système optique et le foyer). La concentration permet donc de réduire la taille des absorbeurs* et d’augmenter la température de fonctionnement des systèmes. Les applications – électricité, chaleur industrielle, combustibles de synthèse – dépendent du système de conversion placé au foyer du dispositif optique de concentration. L’utilisation de cellules photovoltaïques (PV) spécifiques à haut rendement permet de produire de l’électricité directement sans passer par la chaleur (PV sous co...
Gilles Flamant; Alain Dollet. 23. Solaire à concentration : chaleur, électricité et combustibles de synthèse. L'énergie à découvert 2017, 176 -178.
AMA StyleGilles Flamant, Alain Dollet. 23. Solaire à concentration : chaleur, électricité et combustibles de synthèse. L'énergie à découvert. 2017; ():176-178.
Chicago/Turabian StyleGilles Flamant; Alain Dollet. 2017. "23. Solaire à concentration : chaleur, électricité et combustibles de synthèse." L'énergie à découvert , no. : 176-178.
This paper presents an original study on the design and optimization of baffled fluid distributor for the realization of optimal fluid flow distribution in a tubular solar receiver. The basic idea is to install a perforated baffle in the inlet fluid distributor and to optimize the configuration of orifices on the baffle so as to approach the target flow distribution among downstream parallel tubes. A pressurized-air solar receiver comprising of 45 parallel tubes is used for study, with copper or Inconel 600 used as the filling material. Results show that the final fluid flow distributions realized by the geometrically optimized baffles are in good agreement with the target curves. The peak temperature of the receiver wall can be minimized accordingly with moderate increase in total pressure drop of the receiver system. It is shown that the insertion of a geometrically optimized baffle is generally a practical solution with various features: capable of realizing non-uniform target distribution; small pressure drop increase; compact geometry; flexible and adaptive; easy fabrication with a reasonable cost, etc.
Min Wei; Yilin Fan; Lingai Luo; Gilles Flamant. Design and optimization of baffled fluid distributor for realizing target flow distribution in a tubular solar receiver. Energy 2017, 136, 126 -134.
AMA StyleMin Wei, Yilin Fan, Lingai Luo, Gilles Flamant. Design and optimization of baffled fluid distributor for realizing target flow distribution in a tubular solar receiver. Energy. 2017; 136 ():126-134.
Chicago/Turabian StyleMin Wei; Yilin Fan; Lingai Luo; Gilles Flamant. 2017. "Design and optimization of baffled fluid distributor for realizing target flow distribution in a tubular solar receiver." Energy 136, no. : 126-134.
Huili Zhang; Hadrien Benoit; Inmaculada Perez-Lopèz; Gilles Flamant; Tianwei Tan; Jan Baeyens. High-efficiency solar power towers using particle suspensions as heat carrier in the receiver and in the thermal energy storage. Renewable Energy 2017, 111, 438 -446.
AMA StyleHuili Zhang, Hadrien Benoit, Inmaculada Perez-Lopèz, Gilles Flamant, Tianwei Tan, Jan Baeyens. High-efficiency solar power towers using particle suspensions as heat carrier in the receiver and in the thermal energy storage. Renewable Energy. 2017; 111 ():438-446.
Chicago/Turabian StyleHuili Zhang; Hadrien Benoit; Inmaculada Perez-Lopèz; Gilles Flamant; Tianwei Tan; Jan Baeyens. 2017. "High-efficiency solar power towers using particle suspensions as heat carrier in the receiver and in the thermal energy storage." Renewable Energy 111, no. : 438-446.
Kuo Zeng; Daniel Gauthier; Rui Li; Gilles Flamant. Combined effects of initial water content and heating parameters on solar pyrolysis of beech wood. Energy 2017, 125, 552 -561.
AMA StyleKuo Zeng, Daniel Gauthier, Rui Li, Gilles Flamant. Combined effects of initial water content and heating parameters on solar pyrolysis of beech wood. Energy. 2017; 125 ():552-561.
Chicago/Turabian StyleKuo Zeng; Daniel Gauthier; Rui Li; Gilles Flamant. 2017. "Combined effects of initial water content and heating parameters on solar pyrolysis of beech wood." Energy 125, no. : 552-561.
José Soria; Kuo Zeng; Daniela Asensio; Daniel Gauthier; Gilles Flamant; Germán Mazza. Comprehensive CFD modelling of solar fast pyrolysis of beech wood pellets. Fuel Processing Technology 2017, 158, 226 -237.
AMA StyleJosé Soria, Kuo Zeng, Daniela Asensio, Daniel Gauthier, Gilles Flamant, Germán Mazza. Comprehensive CFD modelling of solar fast pyrolysis of beech wood pellets. Fuel Processing Technology. 2017; 158 ():226-237.
Chicago/Turabian StyleJosé Soria; Kuo Zeng; Daniela Asensio; Daniel Gauthier; Gilles Flamant; Germán Mazza. 2017. "Comprehensive CFD modelling of solar fast pyrolysis of beech wood pellets." Fuel Processing Technology 158, no. : 226-237.