Survey and evaluation of equations for thermophysical properties of binary/ternary eutectic salts from NaCl, KCl, MgCl2, CaCl2, ZnCl2 for heat transfer and thermal storage fluids in CSP

Li, Yuanyuan; Xu, Xiankun; Wang, Xiaoxin; Li, Peiwen; Hao, Qing; Xiao, Bo

doi:10.1016/j.solener.2017.03.019

Cited by 137 publications

(41 citation statements)

References 24 publications

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“…In order to achieve the target of a temperature as high as 800 C for a fluid being able to serve as HTF and thermal storage material in advanced CSP technologies bearing supercritical CO 2 power cycles, a system of chloride salts have been examined and recommended [15,16] due to their favorable thermal and transport properties, chemical stability at high temperatures, relatively low cost, and good availability from natural resources. A comprehensive literature survey has been reported in the authors' previous papers [15][16][17]. It has been found that MgCl 2 and KCl are two chloride salts candidates with high boiling point (1420 C and 1412 C, respectively), and can be available from mining or from the products of seawater desalination.…”

Section: Chloride Molten Salts For Heat Transfer and Thermal Storage mentioning

confidence: 99%

Experimental Test of Properties of KCl–MgCl2 Eutectic Molten Salt for Heat Transfer and Thermal Storage Fluid in Concentrated Solar Power Systems

Wang

et al. 2018

Journal of Solar Energy Engineering

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121

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The eutectic mixture of MgCl2–KCl molten salt is a high temperature heat transfer and thermal storage fluid able to be used at temperatures up to 800 °C in concentrating solar thermal power systems. The molten salt thermophysical properties are reported including vapor pressure, heat capacity, density, viscosity, thermal conductivity, and the corrosion behavior of nickel-based alloys in the molten salt corrosion at high temperatures. Correlations of the measured properties as functions of molten salt temperatures are presented for industrial applications. The test results of tensile strength of two nickel-based alloys exposed in the molten salt at a temperature of 800 °C from 1-week length to 16-week length are reported. It was found that the corrosion and strength loss is rather low when the salt is first processed to remove water and oxygen.

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Section: Chloride Molten Salts For Heat Transfer and Thermal Storage mentioning

confidence: 99%

Experimental Test of Properties of KCl–MgCl2 Eutectic Molten Salt for Heat Transfer and Thermal Storage Fluid in Concentrated Solar Power Systems

Wang

et al. 2018

Journal of Solar Energy Engineering

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121

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“…380 [2] >800 [5] ~1.0 (500~800 °C) [5] <0.5* * price of MgNaK chlorides is estimated with the approximate large-scale prices for all chloride salts.…”

Section: Introductionmentioning

confidence: 99%

Hot corrosion behavior of commercial alloys in thermal energy storage material of molten MgCl2/KCl/NaCl under inert atmosphere

Ding

Shi

Xiu

et al. 2018

Solar Energy Materials and Solar Cells

170

111

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“…-Chloride salts have high thermal stability limits (stable > 800°C), moderate heat capacities, and low prices. 204 [7] 850 [7] ~2.0 [9] (600°C) 0.8 [7] (300-600°C) 0.8 [4] <1 [7] MgNaK chlorides…”

Section: Introductionmentioning

confidence: 99%

“…380 [10] >800 [4] ~1.7 [9] (600°C) ~1.0 [9] (500-800°C) <0.35 [4] *The prices are estimated with the approximate large-scale prices for salts.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants: A review

Ding

Bonk

Bauer

2018

Front. Chem. Sci. Eng.

171

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Recently, more and more attention is paid on applications of molten chlorides in concentrated solar power (CSP) plants as high-temperature thermal energy storage (TES) and heat transfer fluid (HTF) materials due to their high thermal stability limits and low prices, compared to the commercial TES/HTF materials in CSP-nitrate salt mixtures. A higher TES/HTF operating temperature leads to higher efficiency of thermal to electrical energy conversion of the power block in CSP, however causes additional challenges, particularly increased corrosiveness of metallic alloys used as containers and structural materials. Thus, it is essential to study corrosion behaviors and mechanisms of metallic alloys in molten chlorides at operating temperatures (500-800°C) for realizing the commercial application of molten chlorides in CSP. The results of studies on hot corrosion of metallic alloys in molten chlorides are reviewed to understand their corrosion behaviors and mechanisms under various conditions (e.g., temperature, atmosphere). Emphasis has also been given on salt purification to reduce corrosive impurities in molten chlorides and development of electrochemical techniques to in-situ monitor corrosive impurities in molten chlorides, in order to efficiently control corrosion rates of metallic alloys in molten chlorides to meet the requirements of industrial applications.

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Survey and evaluation of equations for thermophysical properties of binary/ternary eutectic salts from NaCl, KCl, MgCl2, CaCl2, ZnCl2 for heat transfer and thermal storage fluids in CSP

Cited by 137 publications

References 24 publications

Experimental Test of Properties of KCl–MgCl2 Eutectic Molten Salt for Heat Transfer and Thermal Storage Fluid in Concentrated Solar Power Systems

Experimental Test of Properties of KCl–MgCl2 Eutectic Molten Salt for Heat Transfer and Thermal Storage Fluid in Concentrated Solar Power Systems

Hot corrosion behavior of commercial alloys in thermal energy storage material of molten MgCl2/KCl/NaCl under inert atmosphere

Corrosion behavior of metallic alloys in molten chloride salts for thermal energy storage in concentrated solar power plants: A review

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