Enhanced specific heat capacity of binary chloride salt by dissolving magnesium for high-temperature thermal energy storage and transfer
Enhanced specific heat capacity of binary chloride salt by dissolving magnesium for high-temperature thermal energy storage and transfer
复制标题
通过溶解镁增强二元氯化盐的比热容用于高温热能储存和传输
DOI：
10.1039/c7ta04169a
复制
发表时间：
2017-07
影响因子：
11.9
通讯作者：
Ding Jing
中科院分区：
文献类型：
--
作者：
Tian Heqing;Du Lichan;Huang Chenglong;Wei Xiaolan;Lu Jianfeng;Wang Weilong;Ding Jing
热能储存和转移技术在聚光太阳能发电（CSP）和工业废热回收系统方面受到了极大的关注。在这项研究中，我们报告了一种新的方法来合成纳米流体，通过溶解金属镁在NaCl-CaCl 2共晶熔盐，以提高比热容，而没有传统的团聚效应的纳米粒子。发现在550 °C和750 °C时，镁在二元熔盐中的溶解度分别达到0.075%和0.185%。镁不与熔融盐反应，而是以液态镁金属的形式溶解在熔融盐中，并且不改变二元熔融盐的熔融温度。含1.0wt%和2.0wt%镁的纳米流体的液体比热容为1.12 J g-1 °C-1和1.15 J g-1 °C-1，比二元氯化物盐的液体比热容高105.66%和108.49%。镁降低了温度上限和热稳定性，并且纳米流体在50次加热/冷却循环后具有热稳定性和化学稳定性。这些结果表明，所得的纳米流体是一个有前途的候选材料的高温储热和传热应用。
Thermal energy storage and transfer technology has received significant attention with respect to concentrating solar power (CSP) and industrial waste heat recovery systems. In this study, we report a novel method to synthesize nanofluids by dissolving magnesium metal in NaCl–CaCl2 eutectic molten salt to enhance the specific heat capacity without the conventional agglomerate effect of nanoparticles. It was found that the solubility of magnesium in the binary molten salt reached 0.075% and 0.185% at 550 °C and 750 °C, respectively. Magnesium did not react with the molten salt but dissolved in it in the form of liquid magnesium metal and did not change the melting temperature of the binary molten salt. The liquid specific heat capacities of nanofluids containing 1.0 wt% and 2.0 wt% magnesium were 1.12 J g−1 °C−1 and 1.15 J g−1 °C−1, which were 105.66% and 108.49% higher than those of the binary chloride salts. Magnesium decreased the upper temperature limit and thermal stability, and the nanofluid was thermally and chemically stable after 50 heating/cooling cycles. These results implied that the resulting nanofluid is a promising candidate material for high-temperature heat storage and transfer applications.
登录
查看更多内容
DOI：
10.1007/s11051-016-3460-8
发表时间：
2016
期刊：
Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology
影响因子：
--
作者：
Lasfargues M;Bell A;Ding Y
通讯作者：
Ding Y
影响因子：
--
作者：
Chieruzzi M;Cerritelli GF;Miliozzi A;Kenny JM
通讯作者：
Kenny JM
高温储热材料二元共晶氯化物/膨胀石墨的制备
影响因子：
6.9
作者：
Tian Heqing;Wang Weilong;Ding Jing;Huang Chenglong;Wei Xiaolan;Wang WL;Ding J
通讯作者：
Ding J
DOI：
10.1016/j.ijheatmasstransfer.2010.11.017
发表时间：
2011-02-01
影响因子：
5.2
作者：
Shin, Donghyun;Banerjee, Debjyoti
通讯作者：
Banerjee, Debjyoti
单壁碳纳米管/相变材料复合材料：用于太阳能热能存储的阳光驱动、可逆、形态稳定的相变
影响因子：
19
作者：
Wang, Yunming;Tang, Bingtao;Zhang, Shufen
通讯作者：
Zhang, Shufen