石墨泡沫/共晶盐复合相变材料的制备及其热物性

郭茶秀; 胡高林; 罗志军

石墨泡沫/共晶盐复合相变材料的制备及其热物性

郑州大学化工与能源学院, 河南郑州 450001

基金项目: 国家自然科学基金(51176173);河南省教育厅科学技术研究重点项目(14A480002).

详细信息

通讯作者:
郭茶秀,教授. E-mail: guochaxiu@zzu.edu.cn

中图分类号: TK02
计量
- 文章访问数: 597
- HTML全文浏览量: 90
- PDF下载量: 1118
- 被引次数: 0
出版历程
- 收稿日期: 2015-01-08
- 录用日期: 2015-09-07
- 修回日期: 2015-05-29
- 刊出日期: 2015-06-28

Preparation and thermal properties of graphite foam/eutectic salt composite as a phase change energy storage material

School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China

Funds: National Natural Science Foundation of China (51176173); Science and Technology Research Key Project in Henan Province Department of Education (14A480002).

摘要

摘要: 为强化二元硝酸共晶盐(NaNO₃/KNO₃)的导热性能,在共晶盐中添加石墨泡沫制出石墨泡沫/共晶盐复合相变材料;对共晶盐和复合相变材料的相变特性进行差示热分析;对石墨泡沫的导热系数和复合相变材料的有效导热系数进行测定,并用拉曼光谱对复合相变材料进行稳定性分析。结果表明,石墨基复合材料可以用熔融浸渗法制备,且制备样品的稳定性能良好。复合相变材料的相变温度(221.3℃)与共晶盐(222.4℃)相似,其相变潜热与基于复合材料中共晶盐含量的潜热值相近(下降3.74%)。受石墨骨架高热导率的影响,复合相变材料的导热能力明显提高,与纯共晶盐比增加了102倍。
- 石墨泡沫 /
- 共晶盐 /
- 熔融浸渗 /
- 导热系数 /
- 相变特性
Abstract: A graphite foam/eutectic salt composite was prepared by the infiltration of the foam by a molten binary eutectic nitrate (KNO₃/NaNO₃) to improve its thermal conductivity as a phase change energy storage material. The thermal properties and stability of the composite and the eutectic salt were investigated by differential scanning calorimetry and Raman spectroscopy. Results indicate that infiltration using a molten salt is an effective method to prepare the composite. The phase change temperature of the composite (221.3℃) is similar to that of the salt (222.4℃), and its latent heat is 3.74% lower. The composite has a thermal conductivity 102 times higher than the pure eutectic salt, because of the high thermal conductivity of the graphite. The microstructure of the composite remains unchanged after 100 phase change cycles.
- Graphite foam /
- Eutectic salt /
- Melt impregnation process /
- Thermal conductivity /
- Phase change behaviors

HTML全文

参考文献(17)

张正国,王学泽,方晓明.石蜡/膨胀石墨复合相变材料的结构与热性能
[J].华南理工大学学报(自然科学版), 2006, 34(3): 1-5. (ZHANG Zheng-guo, WANG Xue-ze, FANG Xiao-ming. structure and thermal properties of composite paraffin/expanded graphite phase- change material
[J]. Journal of South China University of Technology (Natural Science Edition) 34(3): 1-5.)

王元, 刘晓光, 杨俊杰, 等. 相变储能技术进展与应用
[J]. 煤气与热力, 30(9): 10-12. (WANG Yuan, LIU Xiao-guang, YANG Jun-jie, et al. Research and application of phase change energy storage technologies
[J]. Gas ＆ Heat, 2010, 30(9): 10-12.)

Gil A, Medrano M, Martorell I, et a1. State of the art on high temperature thermal energy storage for power generation. Part 1-concepts, materials and modellization
[J]. Renewable & Sustainable Energy Reviews, 2010, 14: 56-72.

郭茶秀, 刘树兰. 固-液相变传热强化过程研究进展
[J]. 广州化工, 39(12): 32-33. (GUO Cha-xiu, LIU Shu-lan. Review on intensifying heat transfer of phase change
[J]. Guangdong Chemical Industry, 2011, 39(12): 32-33.)

Klett J W, Mcmillan A D, Gallego N C, et al. The role of structure on the thermal properties of graphite foams
[J]. Journal of Materials Science, 2004, 39(11):3659-3676.

仲亚娟, 李四中, 魏兴海, 等. 不同孔隙结构的炭材料作为石蜡相变储能材料强化传热载体
[J].新型炭材料, 2009, 24(4): 349-353. (ZHONG Ya-juan, LI Si-zhong, WEI Xing-hai, et al. Carbon matrices with different pore structures as heat transfer intensifier in paraffin wax/carbon thermal energy storage system
[J]. New Carbon Materials,2009, 24(4): 349-353.)

杨晟许, 勇铁, 由英来. 泡石墨作为相变储能材料填充物的研究
[J]. 合肥工业大学学报, 2012, 35(5): 598-661. (YANG Sheng, XU Yong-tie, YOU Lai-ying. Investingation of composite phase change heat storage material filled with graphite foam
[J]. Journal of Hefei University of Technology, 2012, 35(5): 598-661.)

Ya-juan Zhong, Quan-gui Guo, Si-zhong Li, et al. Heat transfer enhancement of paraffin wax using graphite foam for thermal energy storage
[J]. Solar Energy Materials & Solar Cells, 2010, 94:1011-1014.

陶杰, 赵玉涛, 潘蕾, 等. 金属基复合材料制备新技术导论
[M]. 北京: 化学工业出版社, 2007, 207-225. (TAO Jie, ZHAO Yu-tao, PAN Lei, et al. New Preparing Technology Introduction of Metal Matrix Composite Materials
[M]. Beijing: Chemical Industry Press, 2007, 207-225.)

O Beně s, R J M Konings, S Wurzer, et al. A DSC study of the NaNO₃/KNO₃ system using an innovative encapsulation technique
[J]. Thermochimica Acta, 2010, 509: 62-66.

Bhattacharya A, Calmidi V V, Mahajan R L. Thermophysical, properties of high porosity metal foams
[J]. International Journal of Heat and Mass Transfer, 2002, 45(5): 1017-1031

刘振海, 徐国华, 张洪林. 热分析仪器
[M]. 北京: 化学工业出版社, 2006, 183-202. (LIU Zhen-hai, XU Guo-hua, ZhANG Hong-lin. Thermal analysis Instrument
[M]. Beijing: Chemical Industry Press, 2006, 183-202.)

黄金, 朱冬生, 王先菊. 复合相变储能材料储能密度及热导率分析
[J]. 武汉理工大学学报, 2009, 31(17): 34-38. (HUANG Jin, ZHU Dong-sheng, WANG Xian-ju. Heat storage density and thermal conductivity of composite phase change energy storage materials
[J]. Journal of Wuhan University of technology,2009, 31(17): 34-38.)

罗志军. 石墨泡沫/共晶盐复合相变材料制备及等效导热系数研究
[D]. 郑州: 郑州大学, 2014. (LUO Zhijun. Preparation and effective thermal conductivity analysis of graphite foam/eutectic salt composite phase change material
[D]. Master Thesis, Zhengzhou University, 2014)

Moeini Sedeh M, Khodadadi J M. Thermal conductivi-ty improvement of phase change materials/graphite foam composites
[J]. Carbon, 2013, 60: 117-128.

何书美. 利用傅里叶变换红外-拉曼光谱研究金属阳离子对含氧酸根结构的影响
[J], 中国测试, 2014, 40(1): 40-42. (HE Shu-mei. Study effects of metal cations on oxygen acid structure with fourier transform infared-raman spectroscopy
[J]. China Measurement&Test, 2014, 40(1): 40-42.)

Marian Marton, Marian Vojs, Pavol Michniak. Deposition of boron doped diamond and carbon nanomaterials on graphite foam electrodes
[J]. Applied Surface Science, 2014, 199(5): 1-6.

施引文献

资源附件(0)

访问统计