Molten salts in the light of corrosion mitigation strategies and embedded with nanoparticles to enhance the thermophysical properties for CSP plants

Ibrahim, Adnan; Peng, Hu; Riaz, Ali; Basit, Muhammad Abdul; Rashid, Umair; Basit, Abdul

doi:10.1016/j.solmat.2020.110768

Cited by 48 publications

(20 citation statements)

References 205 publications

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“…Figure 8 illustrates the change that experiments sodium nitrate after one year of exposure at room temperature when it is pure (a) and in the presence of SiO 2 (b) and Al 2 O 3 (c) NPs. Pure NaNO 3 showed more aggregates than sodium nitrate with the presence of NPs due to moisture absorption; this behaviour is a relevant finding on the point of view of molten salts application because their high hygroscopicity in contact with environment increases the damage of metal compounds present in the plant [ 52 , 53 ]; thus, this effect is reduced considerably with the presence of NPs.…”

Section: Resultsmentioning

confidence: 99%

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

et al. 2022

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Nowadays, the incorporation of nanoparticles into thermal fluids has become one of the most suitable strategies for developing high-performance fluids. An unconventional improvement of thermo–physical properties was observed with the addition of 1% wt. of nanoparticles in different types of fluids, such as molten salts, allowing for the design of more thermally efficient systems using nanofluids. Despite this, there is a lack of knowledge about the effect that nanoparticles produce on the thermal stability and the decomposition kinetics of the base fluid. The present study performs IR- and UV-vis spectroscopy along with thermogravimetric analysis (TGA) of pure nitrate and nitrate based nanofluids with the presence of SiO2 and Al2O3 nanoparticles (1% wt.). The results obtained support that nanoparticles accelerate the nitrate to nitrite decomposition at temperatures below 500 °C (up to 4%), thus confirming the catalytic role of nanoparticles in nanofluids.

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Section: Resultsmentioning

confidence: 99%

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

et al. 2022

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“…In the high-temperature range (T m > 200 °C are the molten inorganic salts, including nitrates, carbonates, and chlorides which are mainly applied for industrial waste heat recovery [ 16 ] and concentrated solar power (CSP) [ 17 ]. They have the advantages of relatively high energy storage density (200–1000 J/g) and high thermal conductivity (0.4–0.7 W/m·K) but the main drawback is the corrosive effect on the storage tanks and delivery pipes [ 18 , 19 ]. For the medium temperature range (100–200 °C), the organic sugar alcohols and inorganic salt hydrates are most applicable but liable to phase segregation and severe supercooling up to 90 °C for pure erythritol [ 20 ].…”

Section: Major Characteristics Of Pcm Emulsionsmentioning

confidence: 99%

Preparation of Stable Phase Change Material Emulsions for Thermal Energy Storage and Thermal Management Applications: A Review

Liu

Niu

2021

Materials

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Thermal energy storage (TES) is an important means for the conservation and efficient utilization of excessive and renewable energy. With a much higher thermal storage capacity, latent heat storage (LHS) may be more efficient than sensible heat storage. Phase change materials (PCMs) are the essential storage media for LHS. PCM emulsions have been developed for LHS in flow systems, which act as both heat transfer and thermal storage media with enhanced heat transfer, low pumping power, and high thermal storage capacity. However, two major barriers to the application of PCM emulsions are their instability and high degree of supercooling. To overcome these, various strategies have been attempted, such as the reduction of emulsion droplet size, addition of nucleating agents, and optimization of the formulation. To the best of our knowledge, however, there is still a lack of review articles on fabrication methods for PCM emulsions or their latest applications. This review was to provide an up-to-date and comprehensive summary on the effective strategies and the underlying mechanisms for the preparation of stable PCM emulsions and reduction of supercooling, especially with the organic PCMs of paraffin. It was also to share our insightful perspectives on further development and potential applications of PCM emulsions for efficient energy storage.

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“…Solar salt (NaNO 3 -KNO 3 : 60-40 wt%) and Hitec salt (NaNO 3 -KNO 3 -NaNO 2 : 7-53-40 wt%) have been generally regarded as the commercial salts in concentrating solar power (CSP) due to good thermo-physical properties and low cost. [1][2][3] However, the low fusion enthalpy, i.e. 113 J g À1 for solar salt and 60 J g À1 for Hitec salt, 4 is a crucial limitation for practical application, which can result in low storage energy density and large container volume when storing the same capacity of energy.…”

Section: Introductionmentioning

confidence: 99%

The corrosion behavior of 304 stainless steel in NaNO₃–NaCl–NaF molten salt and vapor

Lai

Liu

et al. 2022

RSC Adv.

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Molten salts in the light of corrosion mitigation strategies and embedded with nanoparticles to enhance the thermophysical properties for CSP plants

Cited by 48 publications

References 205 publications

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

Preparation of Stable Phase Change Material Emulsions for Thermal Energy Storage and Thermal Management Applications: A Review

The corrosion behavior of 304 stainless steel in NaNO₃–NaCl–NaF molten salt and vapor

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Molten salts in the light of corrosion mitigation strategies and embedded with nanoparticles to enhance the thermophysical properties for CSP plants

Cited by 48 publications

References 205 publications

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

Preparation of Stable Phase Change Material Emulsions for Thermal Energy Storage and Thermal Management Applications: A Review

The corrosion behavior of 304 stainless steel in NaNO3–NaCl–NaF molten salt and vapor

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The corrosion behavior of 304 stainless steel in NaNO₃–NaCl–NaF molten salt and vapor