Li2CO3-Na2CO3-K2CO3相图的理论预测

Zeyang Kang; Xiangyang Liu; Maogang He; Ying Zhang

doi:10.19912/j.0254-0096.tynxb.2020-0151

Li₂CO₃-Na₂CO₃-K₂CO₃相图的理论预测

Translated title of the contribution: Theoretical prediction of ternary phase diagram of Li₂CO₃-Na₂CO₃-K₂CO₃

School of Energy and Power Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Molten salt is an important heat transfer fluid in concentrated solar system, and the phase diagram of molten salt mixture is one of the main factors for its screening. The phase diagram of Li₂CO₃-Na₂CO₃-K₂CO₃ was predicted and calculated based on the Gibbs free energy and thermodynamic principles. The results show that the eutectic point of the molten salt mixture is 421.2 ℃, and the mass fractions of Li₂CO₃, Na₂CO₃ and K₂CO₃ are 25.89%, 22.50% and 51.61%, respectively. Then, the melting point of calculated ratio and different ratios were measured by differential thermal analysis method. The relative deviation is 1.9 ℃, which verifies the accuracy of the calculation method.

Translated title of the contribution	Theoretical prediction of ternary phase diagram of Li₂CO₃-Na₂CO₃-K₂CO₃
Original language	Chinese (Traditional)
Pages (from-to)	284-287
Number of pages	4
Journal	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
Volume	43
Issue number	1
DOIs	https://doi.org/10.19912/j.0254-0096.tynxb.2020-0151
State	Published - 28 Jan 2022

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title = "Li2CO3-Na2CO3-K2CO3相图的理论预测",

abstract = "Molten salt is an important heat transfer fluid in concentrated solar system, and the phase diagram of molten salt mixture is one of the main factors for its screening. The phase diagram of Li2CO3-Na2CO3-K2CO3 was predicted and calculated based on the Gibbs free energy and thermodynamic principles. The results show that the eutectic point of the molten salt mixture is 421.2 ℃, and the mass fractions of Li2CO3, Na2CO3 and K2CO3 are 25.89\%, 22.50\% and 51.61\%, respectively. Then, the melting point of calculated ratio and different ratios were measured by differential thermal analysis method. The relative deviation is 1.9 ℃, which verifies the accuracy of the calculation method.",

keywords = "CSP, Eutectic point, Molten salts, Phase diagram, Thermal energy storage",

author = "Zeyang Kang and Xiangyang Liu and Maogang He and Ying Zhang",

year = "2022",

month = jan,

day = "28",

doi = "10.19912/j.0254-0096.tynxb.2020-0151",

language = "繁体中文",

volume = "43",

pages = "284--287",

journal = "Taiyangneng Xuebao/Acta Energiae Solaris Sinica",

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TY - JOUR

T1 - Li2CO3-Na2CO3-K2CO3相图的理论预测

AU - Kang, Zeyang

AU - Liu, Xiangyang

AU - He, Maogang

AU - Zhang, Ying

PY - 2022/1/28

Y1 - 2022/1/28

N2 - Molten salt is an important heat transfer fluid in concentrated solar system, and the phase diagram of molten salt mixture is one of the main factors for its screening. The phase diagram of Li2CO3-Na2CO3-K2CO3 was predicted and calculated based on the Gibbs free energy and thermodynamic principles. The results show that the eutectic point of the molten salt mixture is 421.2 ℃, and the mass fractions of Li2CO3, Na2CO3 and K2CO3 are 25.89%, 22.50% and 51.61%, respectively. Then, the melting point of calculated ratio and different ratios were measured by differential thermal analysis method. The relative deviation is 1.9 ℃, which verifies the accuracy of the calculation method.

AB - Molten salt is an important heat transfer fluid in concentrated solar system, and the phase diagram of molten salt mixture is one of the main factors for its screening. The phase diagram of Li2CO3-Na2CO3-K2CO3 was predicted and calculated based on the Gibbs free energy and thermodynamic principles. The results show that the eutectic point of the molten salt mixture is 421.2 ℃, and the mass fractions of Li2CO3, Na2CO3 and K2CO3 are 25.89%, 22.50% and 51.61%, respectively. Then, the melting point of calculated ratio and different ratios were measured by differential thermal analysis method. The relative deviation is 1.9 ℃, which verifies the accuracy of the calculation method.

KW - CSP

KW - Eutectic point

KW - Molten salts

KW - Phase diagram

KW - Thermal energy storage

UR - https://www.scopus.com/pages/publications/85124535002

U2 - 10.19912/j.0254-0096.tynxb.2020-0151

DO - 10.19912/j.0254-0096.tynxb.2020-0151

M3 - 文章

AN - SCOPUS:85124535002

SN - 0254-0096

VL - 43

SP - 284

EP - 287

JO - Taiyangneng Xuebao/Acta Energiae Solaris Sinica

JF - Taiyangneng Xuebao/Acta Energiae Solaris Sinica

IS - 1

ER -

Li₂CO₃-Na₂CO₃-K₂CO₃相图的理论预测

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