| Mg(NO3)2·6H2O-KNO3(NH4NO3)蓄热材料的制备及相变研究 |
| Preparation and Phase Change Effect of Mg(NO3)2·6H2O-KNO3(NH4NO3) for Heat Storage |
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| 摘要: |
| 关键词: 共晶盐 蓄热 熔点 差热热重分析 |
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| Abstract: By the means of using repeated crystallization, which Mg(NO3)2·6H2O was the main phase change material, and KNO3, NH4NO3 were the melting point control agent respectively, two kinds of new type of eutectic salt phase change material: Mg(NO3)2·6H2O-NH4NO3(M1) and Mg(NO3)2·6H2O-KNO3(M2) have been prepared, in this paper. Their component which the mass fraction of Mg(NO3)2·6H2O were 0.612 and 0.665 in M1 and M2 respectively have been measured by protracting fake two-components phase diagram. Through the Differential Thermal Analysis(DTA) and Thermogravimetry analysis(TGA) technique, it can be concluded from the experimental results that the melting temperature of Mg(NO3)2·6H2O-NH4NO3 and Mg(NO3)2·6H2O-KNO3 EPCM were 59.5 ℃ and 82.6 ℃, the latent heats of phase change Hfus of the two EPCMs were 35.46 J·g-1 and 79.04 J·g-1, respectively. |
| Keywords: eutectic salt heat storage melting temperature DTA TGA |
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| 摘要点击次数: 1233 |
| 全文下载次数: 2019 |
| 李秀珍,吕永康.Mg(NO3)2·6H2O-KNO3(NH4NO3)蓄热材料的制备及相变研究[J].无机化学学报,2009,25(10):1868-1872. |
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