| 氯化物熔盐材料的制备及其热物理性质研究 |
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| 引用本文： | 魏小兰,谢佩,张雪钏,王维龙,陆建峰,丁静. 氯化物熔盐材料的制备及其热物理性质研究[J]. 化工学报, 2020, 71(5): 2423-2431. DOI: 10.11949/0438-1157.20191541 |
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| 作者姓名： | 魏小兰 谢佩 张雪钏 王维龙 陆建峰 丁静 |
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| 作者单位： | 1.华南理工大学化学与化工学院，广东 广州 510640;2.中山大学材料科学与工程学院，广东 广州 510006 |
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| 摘 要： | 制备了NaCl-CaCl2、 NaCl-KCl-CaCl2、 NaCl-CaCl2-MgCl2、 KCl-CaCl2-MgCl2、 NaCl-KCl-MgCl2、 NaClKCl-CaCl2-MgCl2六种氯化物熔盐材料。采用差示扫描量热法确定它们的低共熔点和组成,测量其比热容、密度、黏度等热物性。测试熔盐材料的质量损失曲线确定工作温度上限,根据测试的结果,对其储能密度进行计算。研究结果表明:NaCl-KCl-CaCl2-MgCl2熔盐材料熔点为380.3℃,流动性较好,工作温度范围为430～700℃,储能密度为625.1 J·cm-3,是六种熔盐中熔点最低、储能密度最大的熔盐,适合作为传热储热材料。NaCl-KCl-CaCl2熔盐熔点为503.8℃,工作温度范围为550～850℃,储能密度为559.9 ...
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| 关 键 词： | 太阳能 氯化物熔盐 制备 热物性 热稳定性 储能密度 传热 储热 |
| 收稿时间： | 2019-12-19 |
| 修稿时间： | 2020-03-09 |
Research on preparation and thermodynamic properties of chloride molten salt materials |
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| WEI Xiaolan,XIE Pei,ZHANG Xuechuan,WANG Weilong,LU Jianfeng,DING Jing. Research on preparation and thermodynamic properties of chloride molten salt materials[J]. Journal of Chemical Industry and Engineering(China), 2020, 71(5): 2423-2431. DOI: 10.11949/0438-1157.20191541 |
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| Authors: | WEI Xiaolan XIE Pei ZHANG Xuechuan WANG Weilong LU Jianfeng DING Jing |
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| Affiliation: | 1.School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China;2.School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, Guangdong, China |
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| Abstract: | Six chloride molten salt materials, NaCl-CaCl2, NaCl-KCl-CaCl2, NaCl-CaCl2-MgCl2, KCl-CaCl2-MgCl2, NaCl-KCl-MgCl2 and NaCl-KCl-CaCl2-MgCl2, were prepared. Then the DSC method was used to determine the eutectic temperature and composition of those molten salts, and the other thermophysical properties were also measured, which were heat capacity, density and viscosity. Also, the mass loss of molten salt materials was investigated to determine the upper limit of working temperature. Correspondingly, energy storage density was calculated for each salt. The results shows that NaCl-KCl-CaCl2-MgCl2 has an eutectic temperature of 380.3℃ with good fluidity. The operating temperature range is 430—700℃, and the energy storage density is 625.1 J?cm-3. By comparison, NaCl-KCl-CaCl2-MgCl2 has the lowest eutectic temperature and the highest energy storage density, which is suitable to be used as heat transfer and heat storage material. The eutectic temperature of NaCl-KCl-CaCl2 is 503.8℃, and the working temperature range is 550—850℃. The energy storage density is 559.9 J?cm-3, that means NaCl-KCl-CaCl2 is suitable for high-temperature heat storage material. |
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| Keywords: | solar energy chloride molten salts preparation thermo-physical properties thermal stability energy storage density heat transfer heat storage |
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