Latent heat of molten salt transport across graphite induced anisotropic interface

2022 ◽  
Vol 236 ◽  
pp. 111496
Author(s):  
Zhiwei Ge ◽  
Liang Wang ◽  
Yun Huang ◽  
Yulong Ding ◽  
Haisheng Chen
Keyword(s):  
Molten Salt ◽  
Latent Heat ◽  
Salt Transport

Study on Modification of Hitec Molten Salt and its Properties Tests

2014 ◽  
Vol 1073-1076 ◽  
pp. 66-72
Author(s):  
Wei Zhai ◽  
Guang Ming Liu ◽  
Fei Yu ◽  
Yuan Kui Wang
Keyword(s):  
Thermal Stability ◽  
Phase Transformation ◽  
Melting Point ◽  
Molten Salt ◽  
Latent Heat ◽  
Molten Salts ◽  
Heat Storage ◽  
Heat Of Fusion ◽  
Temperature Heat ◽  
Thermal Stability Of

In this paper, additive A and additive B were added into Hitec molten salts in order to optimize the properties of the molten salt. The melting point, latent heat of phase transformation, specific heat capacity, thermal gravity, and thermal stability of the modified Hitec molten salt was characterized. The results showed that compare to Hitec molten salt the modified Hitec molten salt showed low melting point, proper latent heat of phase transformation, greater heat of fusion, wide using temperature range and other advantages. The modified molten salt had good thermal properties and thermal stability. This modified Hitec molten salt has good application prospect in the aspect of high temperature heat storage/transfer.

scholarly journals Study on the preparation and thermal properties of binary mixed chloride salts

2021 ◽  
Vol 2076 (1) ◽  
pp. 012040
Author(s):  
Quanying Yan ◽  
Chao Ma ◽  
Wei Wang
Keyword(s):  
Phase Transition ◽  
Power Generation ◽  
Sodium Chloride ◽  
Melting Point ◽  
Binary Mixture ◽  
Phase Change ◽  
Molten Salt ◽  
Latent Heat ◽  
Lithium Chloride ◽  
Phase Change Materials

Abstract Nitrate phase change materials (PCMs) are the most widely used PCMs in solar thermal power generation technology. The maximum service temperature of Nitrate phase change materials is only 600°C. Therefore, to find a phase change material with large heat capacity, wide temperature range, low heat loss and low price is the focus of current research. According to different mass ratios, nine binary molten salt mixtures were prepared by mixing lithium chloride and sodium chloride. The phase change temperature and latent heat of phase transition of them were studied by differential scanning calorimeter (DSC). The experiment results showed that since the melting point of sodium chloride was high, when the content of sodium chloride in the binary mixture of lithium chloride and sodium chloride was large, a small amount of lithium chloride could not reduce the melting point of the mixture below 600°C, the mixture could not be melted. Meanwhile, when sodium chloride and lithium chloride were melted, the phase transition temperature of lithium chloride and sodium chloride remained at about 540°C and floated at ±15°C. The melting temperature and crystallization temperature of the binary mixture of 90% lithium chloride and 10% sodium chloride were quite different, and the latent heat of phase transformation was relatively high. Therefore, the binary mixed molten salt can be used in the heat transfer and storage technology of solar power generation.

scholarly journals Experimental research on latent heat characteristics of binary mixed molten salt

2021 ◽  
Vol 260 ◽  
pp. 03026
Author(s):  
Wei Wang ◽  
Tao Xiong ◽  
Yuting Wu ◽  
Chongfang Ma
Keyword(s):  
Molten Salt ◽  
Melting Temperature ◽  
Latent Heat ◽  
Molten Salts ◽  
Heat Storage ◽  
Mass Ratio ◽  
Latent Heat Storage ◽  
Initial Melting ◽  
Heat Value ◽  
Halogen Salts

At present, thermal storage is considered as one of the key technologies to alleviate the problem of instability and intermittence for renewable energy. Due to relatively high latent heat, latent heat storage by molten salt is considered to a potential technology. Because of the restriction of different thermophysical parameters, the application of latent heat storage by molten salt has many technical obstacles. So, it is an urgent work to find a better mixed molten salt formula with comprehensive thermophysical properties. In this paper, we selected halogen salts (NaCl, NaF) and alkali (NaOH) to prepare binary mixed molten salts. From the results, for the mixed molten salt of NaCl-NaOH, NaCl:NaOH=1:9 has a maximum latent heat value of 301.2J/g. The initial melting temperature is about 200°C. With the increase of the mass ratio of NaCl, the termination melting temperature increases firstly then decreases. For mixed molten salt of NaF-NaOH, NaF:NaOH=1:9 has a maximum latent heat value of 199.5J/g, the initial and termination melting temperatures are about 265°C and 380°C, repectively. The latent heat value of NaCl-NaOH and NaF-NaOH mixed molten salts decreased with the increase of the mass ratio of halogen salts.

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