| Li2CO3-Na2CO3-K2CO3相图的理论预测 |
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| 引用本文： | 亢泽阳,刘向阳,何茂刚,张颖.Li2CO3-Na2CO3-K2CO3相图的理论预测[J].太阳能学报,2022,43(1):284-287. |
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| 作者姓名： | 亢泽阳 刘向阳 何茂刚 张颖 |
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| 作者单位： | 西安交通大学能源与动力工程学院 |
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| 基金项目： | 国家自然科学基金(41941018);中国核工业集团有限公司领创科研项目;国家杰出青年科学基金(51525604)。 |
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| 摘 要： | 熔盐是一种重要的聚光太阳能系统传热流体,多元熔盐混合是满足实际需求的有效方法,而熔盐混合物的相图是其筛选的主要因素之一.该文基于热力学原理及吉布斯自由能对Li2CO3-Na2CO3-K2CO3的相图进行预测与计算,结果显示:该熔盐混合物的共晶点为421.2℃,Li2CO3、Na2CO3和K2CO3的质量分数分别为25....
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| 关 键 词： | 太阳能热发电 相图 熔盐 共晶点 热能储存 |
THEORETICAL PREDICTION OF TERNARY PHASE DIAGRAM OF Li2CO3-Na2CO3-K2CO3 |
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| Kang Zeyang,Liu Xiangyang,He Maogang,Zhang Ying.THEORETICAL PREDICTION OF TERNARY PHASE DIAGRAM OF Li2CO3-Na2CO3-K2CO3[J].Acta Energiae Solaris Sinica,2022,43(1):284-287. |
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| Authors: | Kang Zeyang Liu Xiangyang He Maogang Zhang Ying |
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| Affiliation: | (School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China) |
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| 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-K2CO3was 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,Na2CO3and K2CO3are 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. |
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| Keywords: | CSP phase diagram molten salts eutectic point thermal energy storage |
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