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Interaction of solar salts Uses of solar salts How its created

Interaction of solar salts

Uses of solar salts

How its created

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Expert Solution

Interaction of solar salts:The study of more efficient materials for thermal energy storage at high temperatures is a broad field of research. The use of the nanotechnology is a strategy recently considered to enhance the thermal properties of these materials. The nano-enhanced Molten Salts (neMS) are constituted by an inorganic salt where tiny quantities of nanoparticles (NPs) are dispersed. These nanomaterials possess a specific heat higher than that of the salt or the isolated NPs. This phenomenon is not still well understood and great research efforts are needed to describe the interactions on the material at a molecular level. The existence of a nanolayer at the interface between the NPs surface and the molten salt with superior thermal properties is the main mechanism proposed up to now. A high available surface of the NPs promotes the formation of higher quantities of these nanostructures. The available surface depends on the NPs size and shape and is strongly reduced if NPs are agglomerated. We have studied and compared the effect on the specific heat of embedding two different ceramic NPs on molten Solar Salt

Uses of solar salts : Molten salts have a variety of uses. Molten chloride salt mixtures are commonly used as baths for various alloy heat treatments, such as annealing and martempering of steel. Cyanide and chloride salt mixtures are used for surface modification of alloys such as carburizing and nitrocarburizing of steel. Cryolite (a fluoride salt) is used as a solvent foraluminium oxide in the production of aluminium in the Hall-Héroult process. Fluoride, chloride, and hydroxide salts can be used as solvents in pyroprocessing of nuclear fuel. Molten salts (fluoride, chloride, and nitrate) can also be used as heat transfer fluids as well as for thermal storage. This thermal storage is commonly used in molten salt power plants.[1]

A commonly used thermal salt is the eutectic mixture of 60% sodium nitrate and 40% potassium nitrate, which can be used as liquid between 260-550 °C

.How its created

They're searching for the right combinations that will allow solar thermal energy to be stored cheaply and efficiently so it can be dispatched to generate electricity after the sun sets. ... The heat released by the molten salt is used to create steam that drives an electricity-generating turbine


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