以石蜡为相变材料、膨胀石墨为支撑结构,利用膨胀石墨的多孔吸附特性,制备出了石蜡含量90%(质量分数)的石蜡/膨胀石墨复合相变储热材料.采用扫描电镜(SEM)、偏光显微镜(PM)、X射线衍射(XRD)及差示扫描量热分析(DSC)对复合相变储热材料的结构和性能进行了表征.结果表明,膨胀石墨吸附石蜡后仍然保持了原来疏松多孔的蠕虫状形态,石蜡被膨胀石墨微孔所吸附,在石蜡质量含量为90%时仍保持定型特性;复合相变储热材料没有形成新物质,其相变温度与石蜡相似,相变焓与基于复合材料中石蜡含量的相变焓计算值相当.
参考文献
| [1] | Mettawee Eman-Bellah S;Assassa Ghazy M R .[J].Energy,2006,31(14):2622-2632. |
| [2] | Veer T V;Buddhi D .[J].Renewable & Sustainable Energy Reviews,2007,11(06):1146-1166. |
| [3] | Nayak K C;Saha S K;Srinivasan K et al.[J].International Journal of Heat and Mass Transfer,2006,49(11-12):1833-1844. |
| [4] | Nobuhiro M;Tomohiro A .[J].Thermochimica Acta,2006,31(10-11):1632-1642. |
| [5] | Sharma S D;Sagara K .[J].INTERNATIONAL JOURNAL OF GREEN ENERGY,2005,2:1-56. |
| [6] | Kaygusuz K;Sari A .[J].Utilization and Environmental Effects,2007,29(03):261-270. |
| [7] | Sarier N;Onder E .The manufacture of microencapsulated phase change materials suitable for the design of thermally enhanced fabrics[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2007(2):149-160. |
| [8] | Xavier Py;Regis Olives;Sylvain Mauran .Paraffin/porous-graphite-matrix composite as a high and constant power thermal storage material[J].International Journal of Heat and Mass Transfer,2001(14):2727-2737. |
| [9] | Zhang Z G;Fang X M .[J].Energy Conversion and Management,2006,47(03):303-310. |
| [10] | 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(03):1-5. |
| [11] | Ahmet Sari;Ali Karaipekli .Thermal conductivity and latent heat thermal energy storage characteristics of paraffin/expanded graphite composite as phase change material[J].Applied thermal engineering: Design, processes, equipment, economics,2007(8-9):1271-1277. |
| [12] | Ali Karaipekli;Ahmet Sari;Kamil Kaygusuz .Thermal conductivity improvement of stearic acid using expanded graphite and carbon fiber for energy storage applications[J].Renewable energy,2007(13):2201-2210. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%