Compatibility of a post-industrial ceramic with nitrate molten salts for use as filler material in a thermocline storage system

Calvet, Nicolas; Gomez, Judith C.; Faïk, A.; Roddatis, Vladimir; Meffre, Antoine; Glatzmaier, Greg C.; Doppiu, Stefania; Py, Xavier

doi:10.1016/j.apenergy.2012.12.078

Cited by 86 publications

(38 citation statements)

References 13 publications

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“…Guillot et al [31] showed the compatibility during 75 h between Cofalit and a molten eutectic mixture of sodium and potassium nitrates (50 wt.% NaNO 3 , 50 wt.% KNO 3 ) and on the other hand, the incompatibility of this material with some sulphates, phosphates and carbonates in the same conditions (50°C above the melting point of the salt). Calvet et al [32], with corrosion tests at 500°C for 500 h, showed the compatibility of Cofalit and conventional Solar Salt (60 wt.% NaNO 3 , 40 wt.% KNO 3 ) but were not able to conclude about the compatibility between Cofalit and the ternary salt HI-TEC XL due to a structural change at the Cofalit surface during the thermal treatment.…”

Section: Introductionmentioning

confidence: 97%

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

Motte¹,

Falcoz²,

Véron³

et al. 2015

Applied Energy

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Section: Introductionmentioning

confidence: 97%

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

Motte¹,

Falcoz²,

Véron³

et al. 2015

Applied Energy

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“…An important manner to reduce costs related to the TES materials is the usage of recycled materials, wastes and industrials by-products, which are known for their low cost. Moreover, these materials should have high availability and lack of conflict of use [1] due to the fact that a large range of material amount is needed for TES purposes, from few kilograms in domestic systems to thousands of tones in solar plants [2].…”

Section: Introductionmentioning

confidence: 99%

Thermal performance evaluation of bischofite at pilot plant scale

et al. 2015

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Artículo de publicación ISIThe selection of the proper thermal energy storage (TES) material for an application is crucial. On the one hand, these materials should have suitable thermal properties for the operational temperatures range of the systems they are planned to work for, such as thermal stability, high latent heat and high heat capacity. On the other hand, they should be available on the market and at low price. Besides, researchers have to bear in mind the importance of testing TES materials not only at laboratory scale but also at higher scale, since it has been demonstrated that some thermal characteristics are volume-dependant. In the present study, bischofite, a by-product obtained from the non-metallic industry in the North of Chile with desired thermal properties for mid-temperature applications (around 100 degrees C), has been studied. A first analysis was performed in terms of comparing the thermal properties and cost of bischofite with other material previously studied as TES materials in order to evaluate its potential in both latent and sensible phases. Afterwards, a second analysis was experimentally performed in terms of testing bischofite at large-scale (204 kg) in a pilot plant facility. The experimental procedure consisted on several charging processes within two different temperatures ranges: from 50 degrees C to 80 degrees C and from 80 degrees C to 120 degrees C in order to study the behavior of the material in the sensible solid phase and latent phase respectively. The temperature profiles, the power given by the HTF, the energy balance in the storage system and the accumulation energy rate of the bischofite were analyzed. Results of both analysis showed that bischofite has potential as TES material for mid-temperature applications.European Union PIRSES-GA-2013-610692 Spanish government ENE2011-22722 BES-2012-051861 FONDECYT 1120422 CONICYT/FONDAP 15110019 Education Ministry of Chile PMI ANT 1201 ANT 110

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“…The former one is for instance focused on the development of filler storage materials to be placed in the TES tank to replace as much as possible the volume of salt [3]. In this case, the molten salt is mainly reduced to its HTF functionality and its needed amount decreased by about 75%.…”

Section: -Alternative Approachesmentioning

confidence: 99%

“…In this "thermocline" approach [3], the two temperature levels are naturally separated by the difference in density. Its major advantage is to reduce the overall cost of the TES unit (by about 30%) by using a single tank.…”

Section: -Current Thermal Storage For Cspmentioning

confidence: 99%

Thermal energy storage for CSP (Concentrating Solar Power)

Sadiki

Olivès

et al. 2017

EPJ Web Conf.

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Summary. -The major advantage of concentrating solar power before photovoltaic is the possibility to store thermal energy at large scale allowing dispatchability. Then, only CSP solar power plants including thermal storage can be operated 24 h/day using exclusively the solar resource. Nevertheless, due to a too low availability in mined nitrate salts, the actual mature technology of the two tanks molten salts cannot be applied to achieve the expected international share in the power production for 2050. Then alternative storage materials are under studies such as natural rocks and recycled ceramics made from industrial wastes. The present paper is a review of those alternative approaches.

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Compatibility of a post-industrial ceramic with nitrate molten salts for use as filler material in a thermocline storage system

Cited by 86 publications

References 13 publications

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

Compatibility tests between Solar Salt and thermal storage ceramics from inorganic industrial wastes

Thermal performance evaluation of bischofite at pilot plant scale

Thermal energy storage for CSP (Concentrating Solar Power)

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