纳米填料增强硝酸盐复合材料传储热性能的研究进展

吴晨光; 李蓓

doi:10.13801/j.cnki.fhclxb.20201218.001

纳米填料增强硝酸盐复合材料传储热性能的研究进展

doi: 10.13801/j.cnki.fhclxb.20201218.001

吴晨光^1,,
李蓓^{1, 2, ,}

1.
武汉理工大学　材料科学与工程学院　材料基因工程研究中心，武汉 430070
2.
华中科技大学　材料成形与模具技术国家重点实验室，武汉 430070

基金项目: 华中科技大学材料成形与模具技术国家重点实验室开放课题研究基金(P2021-009)

详细信息

通讯作者:
李蓓，博士，副教授，博士生导师，研究方向为高分子、金属及纳米复合材料计算模拟　E-mail：libei@whut.edu.cn

中图分类号: TB332
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- 文章访问数: 812
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- PDF下载量: 55
- 被引次数: 0
出版历程
- 收稿日期: 2020-11-04
- 录用日期: 2020-12-14
- 网络出版日期: 2020-12-18
- 刊出日期: 2021-07-15

Progress on heat transfer and storage performance of nano-filler reinforced nitrate composites

WU Chenguang^1
,,
LI Bei^{1, 2
, ,}

1.
Research Center for Materials Genome Engineering, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
2.
State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430070, China

摘要

摘要: 硝酸盐凭借成本低、工作温度范围广等优点作为储热介质被广泛应用于聚光太阳能热发电系统。向硝酸盐中掺入纳米填料会使其传储热性能显著提高，可有效提高太阳能光热发电系统的发电效率。本文介绍了常见硝酸盐基纳米复合材料组分及制备方法，分析了纳米填料掺杂浓度和尺寸对硝酸盐纳米复合材料传储热性能的影响及其增强机制，最后指明硝酸盐纳米复合材料未来的研究方向。
- 聚光太阳能热发电 /
- 硝酸盐 /
- 热学性能 /
- 纳米结构 /
- 热分析
Abstract: Nitrates are widely used as heat storage mediums in the concentrating solar power system due to their low costs and wide operating temperature ranges. It can significantly improve the heat transfer and storage performance of the nitrates incorporated with nano-fillers, by which the power generation efficiency of the concentrating solar power system can further be improved. In this review, the components and preparation methods of nitrate composite materials were introduced. Then, the effects of the doping concentration and size of the nano-fillers on the heat transfer and storage properties of nitrate composites were analyzed. The enhancement mechanisms of the thermal performance were also summarized. Finally, the future research directions of the nitrate composite systems were outlined.
- concentrating solar power /
- nitrate /
- thermal properties /
- nano-structures /
- thermal analysis

HTML全文

图 1 两步水溶液法(a)^[21]和高温熔融法(b)^[24]示意图

Figure 1. Schematics of two steps aqueous solution preparation method (a)^[21] and high temperature melting process method (b)^[24]

下载: 全尺寸图片幻灯片

图 2 三种比热容增强机制示意图^[21]

Figure 2. Schematics of three mechanisms for specific heat capacity enhancement^[21]

下载: 全尺寸图片幻灯片

图 3 针状结构形成机制示意图^[37]

Figure 3. Schematics of formation mechanism of needle-like structure^[37]

下载: 全尺寸图片幻灯片

图 4 纯盐(a)和针状结构的SEM图像(b)、针状结构的背散射电子显微镜(BSE)图像(c)及改变pH值后复合材料的SEM图像(d)^[38]

Figure 4. SEM image of pure salt (a) and needle-like structure (b), BSE image of needle-like structure (c), SEM image of composites after changing pH (d)^[38]

下载: 全尺寸图片幻灯片

图 5 Solar salt中针状纳米结构的SEM图像^[55]

Figure 5. SEM images of needle-like nanostructure in Solar salt^[55]

下载: 全尺寸图片幻灯片

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